Genius 1793, 2093, 1993, 3693, XFR-100W User Manual

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L

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Monitor Models:

1493

1793
1993
2093
2793
3693

Safety Isolating

Transformer Models:

ISO XFR-75W

ISO XFR-100W

N

N

A

A

M

M

E

E

C

C

I

I

V

V

R

R

E

E

S

S

2 YEAR LIMITED WARRANTY

This product is warranted by CERONIX to be free of defects in material
and workmanship for a period of two years from the date of purchase.
All parts and labor are free of charge during the warranty period.
This warranty does not cover mechanical breakage due to physical abuse.
It is the customer's responsibility for shipping the defective unit to and from
CERONIX or one of the authorized service centers for repair.
Please attach a note describing the problem.

CERONIX Inc.
13350 New Airport Road
Auburn, CA. 95602-7419
Phone: [phone]
FAX: [phone]
WEB: www.ceronix.com

CERONIX shall not be liable for any consequential damages, including
without limitation damages resulting from loss of use.

Ceronix will repair XX93 monitors after the 2 year warranty,
for a minimal charge, plus shipping to and from Ceronix.

®

Recognized under the Component Program of Underwriters Laboratories Inc., the
Canadian Standards Association, and TÜV Product Service.
Compliance to the following Standards:
IEC 60950, CAN/CSA-C22.2 No. 60950-00, ANSI/UL 60950, CAN/CSA-C22.2 No.
1-98, IEC 65:85 + A1:87 + A2:89 + A3:92.

ISO 9001:1994 Certified through TÜV Management Service.

COPYRIGHT 2002

CERONIX

All rights reserved.

The information contained in this manual

is subject to change without prior notice.

©

ABOUT THIS MANUAL

This manual is specifically written to aid the service technician, repairing
CERONIX Models 1493, 1793, 1993, 2093, 2793, and 3693 color monitors.

There are three main sections:

1. General Description.

2. Circuit Description.

3. Repair Setup and Appendix.

Introduction Block

Diagram

Installation

Instructions

Description

BLOCK
Diagram

Schematics

&
Assembly
Drawings

Circuit

Description

Trouble

shooting

Handbook

Appendix

Convergence

Degaussing

P/O Form

PRAs

To understand how the Monitor works, it is best to know what each circuit
does and how each circuit relates to the other circuits. The Block Diagram is
presented in a simplified view and a comprehensive view to accomplish the goal of
understanding the whole unit. Once the general picture is clear, the complexity of
each circuit will be easier to understand.

The Circuit Description is also written in two views, a simplified view and a
detailed view to help give the reader a clear understanding of what each
component does. This understanding is most helpful for the more complex
problems or multiple problems that sometimes occur.

The power supply trouble shooting section describes methods used to power up
various monitor circuits, when there is a fault in the monitor, which disables the
power supply.

The appendix includes; filament voltage test, convergence procedure,
replacement parts purchase order form, degaussing coil attachment specification,
high pot test, wire routing drawing, production assembly drawings (PADs), C, I, J,
& K film resistor arrays and a parts list addendum. The parts list addendum is
used to add new information describing part changes. Tables, suitable for pasting
on these pages, will be published as new variations of the XX93 monitors are
produced.

i

TABLE OF CONTENTS

About This Manual.............................................................................................................

Table of Contents................................................................................................................

CERONIX Monitor Simplified Block Diagram.................................................................

Installation Instructions; English, French, and German................................................

CERONIX Monitor Electrical Specification......................................................................

1493, 1793, 1993, 2093, 2793, and 3693 General Operation Description.

Video Interface, Amps & Beam Current Sense........

Auto Bias, Bias Sync Delay, & Auto Bright.............

CRT, Blanking, Sync, & Vertical deflection.............

Horizontal Deflection & Remote...............................

Horizontal Size & Power Supply...............................

P/S, Safety Shutdown Circuits, Degaussing.............

Monitor BLOCK DIAGRAM..............................................................................................

Monitor Schematics and Assembly Drawings

1493-CGA Main Board Schematic..(4233/4235)...............................................................

1493-CGA Main Board Technician Assembly Drawing...................................................

1493-VGA/SVGA Main Board Schematic..(4200/4252)....................................................

1493-VGA/SVGA Main Board Technician Assembly Drawing........................................

1793-VGA Main Board Schematic..(4243/4244)..............................................................

1793-VGA Main Board Technician Assembly Drawing...................................................

1793-SVGA Main Board Schematic ..(4247/4250)............................................................

1793-SVGA Main Board Technician Assembly Drawing.................................................

1993-VGA Main Board Schematic..(4221/4255)...............................................................

1993-VGA Main Board Technician Assembly Drawing...................................................

1993-SVGA Main Board Schematic..(4249/4256).............................................................

1993-SVGA Main Board Technician Assembly Drawing.................................................

2093-CGA Main Board Schematic..(4112/4166)...............................................................

2093-CGA Main Board Technician Assembly Drawing...................................................

2093-VGA Main Board Schematic..(4224/4227/4108)......................................................

2093-VGA Main Board Technician Assembly Drawing...................................................

2793-CGA Main Board Schematic..(4104)........................................................................

2793-CGA Main Board Technician Assembly Drawing...................................................

2793-VGA Main Board Schematic..(4231)........................................................................

2793-VGA Main Board Technician Assembly Drawing...................................................

2793-VGA Main Board Schematic..(4254)........................................................................

2793-VGA Main Board Technician Assembly Drawing...................................................

3693-CGA Main Board Schematic..(4172)........................................................................

3693-CGA Main Board Technician Assembly Drawing...................................................

Video Board Schematic......................................................................................................

Video Board Technician Assembly Drawing..(Component Side).....................................

Video Board Technician Assembly Drawing..(Conductor Side).......................................

Safety Critical Components for XX93 Monitors..(English)..............................................

Safety Critical Components for XX93 Monitors..(German)..............................................

Replacement Part List.......................................................................................................

Blocks A-D...............................

Blocks E-G...............................

Blocks H-L...............................

Blocks M-P..............................

Blocks Q-T...............................

Blocks U-Z...............................

i
ii-iii
1
2-4
5-8

9
10
11
12
13
14
15

16
17
18
19

20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

40
41
42
43
44

45-63
Detailed Circuit Description

Video Interface Circuit, Function, Description (+ & - Analog)........................................

5.6V to 1.1V, -Analog, DC, Video Interface Circuit Description......................................

0V to .7V, +Analog, DC Video Interface Circuit Description...........................................

1Vp-p, +Analog, AC Video Interface Circuit Description.................................................

64

65

66

67

ii

TABLE OF CONTENTS

Video Amplifier Circuit, Function, Description.................................................................

Video Amplifier Circuit Description and Schematic.........................................................

Video Board Power Supply and Arc Protect Schematic....................................................

CRT Auto Bias and Auto Bright Circuit, Function, Description......................................

CRT Auto Bias, Auto Bright, and Vertical Sync Delay Circuit Description....................

CRT Auto Bias and Auto Bright Schematic......................................................................

Monitor, Block Diagram Review........................................................................................

Blanking, Master Gain, and Fault Circuit, Function, Description..................................

Blanking, Master Gain, and Fault Circuit Description....................................................

Blanking, Master Gain, Beam Limiter, and Fault Schematic.........................................

Vertical and Horizontal Sync Circuit Description.............................................................

Vertical Deflection Circuit Description and Schematic....................................................

Horizontal Deflection Circuit Description and Schematic................................................

Horizontal Raster Width Control Circuit Description......................................................

Horizontal Raster Width and Position Control Schematic...............................................

Dynamic Focus Circuit Function and Description............................................................

Vertical Booster Amplifier Circuit and Description..........................................................

Simplified Power Supply Circuit, Function, Description..................................................

Switch Mode Power Supply Circuit Description and Schematic......................................

Trouble Shooting and Repair

Equipment Setup for repairing the Model XX93 Monitor..(English)...............................

Equipment Setup for repairing the Model XX93 Monitor..(German)..............................

Power Supply Trouble Shooting Tips.................................................................................

Trouble Shooting Handbook...............................................................................................

Filament Voltage Test..(English).......................................................................................

Filament Voltage Test..(German)......................................................................................

Setup and Convergence Procedure..(English)...................................................................

Setup and Convergence Procedure..(German)...................................................................

Replacement Parts, Purchase Order Form........................................................................

1493 Degaussing Coil Attachment Specification...............................................................

1793, 1993, 2093 Degaussing Coil Attachment Specification...........................................

2793, 3693 Degaussing Coil Attachment Specification.....................................................

HighPot, for Shock Hazards, Circuit Description..(English)............................................

HighPot, for Shock Hazards, Circuit Description..(German)...........................................

Wire Routing Instructions..................................................................................................

Precision Resistor Arrays..(C, I, J).....................................................................................

Precision Resistor Array..(K)..............................................................................................

Precision Resistor Array..(Blue).........................................................................................

Vertical Deflection Amplifier-Booster Technician Assembly Drawing............................

Monitor Input Drive Signal Worksheet.............................................................................

Declaration of Conformity..................................................................................................

68
68-69
70
71
72
73
74
75
76
77
78
79-81
82-83
84
85
86
87
88-89
90-91

92
93
94
95-97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114

ISO XFR-75W and ISO XFR-100W Safety Isolating Transformer..................................

Circuit Description..(English).............................................................................................

Auto Voltage Select Schematic and Assembly Drawing...................................................

Circuit Description..(German)............................................................................................

Installation Instructions.....................................................................................................

Specifications.......................................................................................................................

Isolation Transformer Trouble shooting..(English)...........................................................

Isolation Transformer Troubleshooting..(German)...........................................................

Manual Voltage Select Schematic and Assembly Drawing..............................................

Part List Addendum...........................................................................................................

115
116
117
118
119-121
122-123
124
125
126
127-130

iii

Monitor Simplified Block Diagram.

VIDEO
Output

Drive

Electronics

SYNC
Output

Isolated

Power

This block diagram gives a broad view of the circuit organization of the 1493,
1793, 1993, 2093, 2793, and 3693 monitors. The blocks with the bold outline
represent circuits which provide these monitors with a wide range of
operating conditions without the need for adjustment.

VIDEO

Interface

Blanking

Remote

Controls

VIDEO
Amps.

AUTO BIAS

Vertical Deflection

Horizontal Deflection

Horizontal Size
Control

POWER SUPPLY

CRT

FBT

IB

Fault &

High Temp.

Detection

The video interface circuit can be programmed to accept; +Analog AC or
DC coupled, -Analog, and 4 line TTL. The M. GAIN or contrast control is
located on the remote control board.

The auto bias circuit eliminates the need for the color setup procedure.
This circuit is designed to actively compensate for picture tube drift which
normally causes unbalanced color. The auto bias circuit also adjusts the
CRT gain to compensate for gain loss with age.

The horizontal size control circuit permits the horizontal size to be adjusted
from a remote control board. This circuit is also used to compensate for
pincushion distortion and blooming. Anti-blooming is accomplished by
correcting horizontal size variations which are caused by the additional load
on the flyback transformer under high beam current conditions.

Careful reading of all the information presented in this manual is a good
way to learn how to repair the CERONIX monitor.

1

Installation Instructions For The XX93 Monitors.

1.

A 3 amp slow blow fuse (for the degaussing current) and a 75 VA isolation
transformer are the minimum requirements for using our monitor in a product.

2.

Unpack the monitor.

3.

Install the monitor in the enclosure.

4.

Connect the green/yellow ground wire to the earth ground connection on the enclosure.
This wire is connected to the ground screw, located on the monitor chassis behind the

serial number label.

Refer to the installation instructions supplied
by the system manufacturer for details of
mounting the monitor in the enclosure.

WARNING!

!

Failure to connect this ground wire before applying power is not
allowed, since this condition can produce a shock hazard. The
chassis to mains connector resistance shall not exceed 100mΩ.

Check that the following wires are properly connected;

5.
Green wire from the CRT aquadag braid to the video board.

A.

12 conductor flat cable from the video board to the main board.

B.

Red high voltage wire from the flyback transformer

C.

to the picture tube anode cap.
Yoke cable from the yoke to the main board.

D.

Remote cable from the remote control board to the main board.E.

Note;

6.

Plug in the
seven conductor
video connector.

7.

Plug in the power connector
from the isolation transformer.

Be sure these wires are secured such that they do not touch any metal parts.

Pin Signal

0

+12V from monitor.

1

Horizontal sync.

2

Vertical sync.

ISOLATION TRANSFORMER

Mains
Power

3A-T

FUSE

GREEN / YELLOW WIRE

Color

White
Yellow
Purple

75VA

Signal ground.

3

Red video.

4

Green video.

5

Blue video.

6

Gray
Red

Green
Blue

Attached to the
monitor chassis.

Apply power to the monitor and the drive electronics.

8.

Check the focus and, if necessary, adjust the top control on the flyback transformer.

9.

Adjust the controls on the remote control board for proper;

10.
Horizontal Raster Size.

Vertical Raster Size.
Vertical Raster Position.
Horizontal Picture Position.
Video Gain.

11.

For convergence instructions, see page 100 & 101.

2

Instructions d´installation des écrans XX93.

1. Un fusible á fusion lente de 3 amp (pour le courant du champ magnétique d´adjustement) et un
transformateur d´isolation de 75 VA sont le minimum requis pour utiliser nos écrans dans un produit.

2. Déballer l´écran.

3. Installer l´écran dans son carter.

Se référer aux instructions d´installation foumies par le fabriquant
du systéme pour les détails de montage de l´écran dans le carter.

4. Relier le fil de terre vert/jaune á la prise de terre sur le carter. Ce cable est relié á la vis
de terre située sur le chassis de l´écran derriére l´étiquette portant le numéro de série.

ATTENTION! Il n´est pas permis de ne pas relier ce fil de terre avant de mettre le courant, car

!

cette situation pourrait provoquer un choc électrique dangereux.
La résistance du chassis aux pricipales connections ne doit pas depasser 100mΩ.

5. Vérifier que les fils suivants sont correctement reliés:
A. Le fil vert de la tresse du tube cathodique aquadag á la carte video.

B. Le cable plat á 12 conducteurs de la carte vidéo á la carte principale.
C. Le cable rouge haut voltage du retout du transformateur au capuchon de

l´anode du tube cathodique.

D. Le fit de bobinage du bobinage á la carte principale.
E. Le fil de télécommande de la carte de la télécommande á la carte principale.

Note: Soyez sur que ces fils sont connectés en toute sécurité de sorte qu´ils ne
touchent aucune partie métallique.

6. Brancher les

sept fils de la
connection vidéo:

Broche Signal Couleur

0

+ 12V de l´écran

1

Synchro Horizontale

2

Synchro Verticale

Blanc
Jaune
Violet

3

Signal de terre

4

Rouge vidéo

5

Vert vidéo

6

Bleu vidéo

Gris
Rouge
Vert
Bleu

TRANSFORMATEUR D'ISOLATION

7. Brancher les fils de courant

depuis le transformateur d'isolation:

Courant
Principaux

3A-T

75VA

FUSE

FIL VERT / JAUNE

Attasché au chassis
du moniteur.

8. Amener le courant á l´écran et au disque électronique.

9. Vérifier le foyer, et si nécessaire, régler le contróle sur le retour du transformateur.

10. Effectuer les réglages sur la carte de la commande á distance pour:
La taille du balayage horizontal.
La taille du balayage vertical.

La position du balayage fertical.
La position horizontale de l´image.
L´acquisition vidéo.

11. Pour les instructions de convergence, voir page 100 & 101.

3

Installationsanweisungen für die XX93 Monitore.

1. Ein 3 Ampère-T sicherung (für die degaussing-Strömung) und ein 75 VA Isoliertransformator
ist die Minimum-Forderung für benutzen unseren Monitoren in einem Produkt.

2.

Packen Sie den Monitor aus.
Schließen Sie den Monitor

3.

im Gehause an.

4.

Verbinden Sie den Grüne/Gelben Schutzleiter zum Erdung anschluß auf dem Gehause.

Für Details, Folgen Sie den Installation-Anweisungen,
Vom Lieferanten der Antriebelektronik.

Dieser Draht ist verbunden zur der Erdung-Schraube auf dem Monitor-Chassis, und wird
hinter der Serien-Nummer-Aufschrift gefunden.

Unterlassen dieser Verbindung dieses Erdung-Drahts ist

WARNUNG!

!

gesetze widrig. Der Widerßtand von diesem anschluß biz
zum netzstecker darf 100mΩ nicht überschreiten.

Prüfe daß die folgenden Drähte ordentlich verbunden sind;

5.
Grüne Draht vom CRT aquadag zum Video Schaltpult.A.

B.
C.
D.

12 Leiter-Flachkabel vom Videoschaltpult zum Hauptschaltpult.
Rote hochspannungs Draht vom Flybacktransformator zur der Bildröhrenanode.
Jochkabel vom Joch zum Hauptschaltpult.

E. Fernsteuerung Kabel vom Fernsteuerungschaltpult zum Hauptschaltpult.

Notiz;

Stecken Sie den

6.

7 Leiter-Video­Verbindungsstecker ein.

Seien Sie sicher diese Drähte sind so befestigt daß sie kein Metallteil berühren.

0

+12V Von Monitor.

1

Horizontal sync.
Vertical sync.

2

FarbeSignalLeiter
Weiß

Gelb

Purpur

3

Signal-Erdung.

4

Rotes Video.
Grünes Video.

5
6

Blaues Video.

Grau
Rot

Grün
Blau

ISOLIERTRANSFORMATOR

7.

Stecken Sie den Stecker vom
Isoliertransformator ein.

Schalten Sie den Monitor und die Steuerung an.

8.
Prüfe Sie den Fokus und, wenn notwend, stell en Sie die obere Kontrolle ein auf dem

9.

Netzstrom

Grüne/Gelben Schutzleiter

3A-T

SICHERUNG

75VA

Verbindung ist auf dam
Monitore chassis.

Flybacktransformator.

10.

Stellen Sie die Kontrollen des Fernsteuerungsschaltung ein für richtige

- Horizontal Raster Größe.

- Vertical Raster Größe.

- Vertical Raster Position.

- Horizontal Bild Position.

- Video Kontrast.

Für Konvergenz-Anweisungen, auf seite 100 & 101.

11.

4

CERONIX

XX93 Monitor Electrical Specification.

INPUTS

Standard Video Configurations, available, are:

1.

A. Positive Analog, DC Coupled.

Video

Source

D-A

75Ω

Video

Gnd

.6mA

75Ω

B. Positive Analog, AC Coupled.

Video

Source

D-A

Zo=75Ω

Amp.

Video

Gnd

75Ω

10uA

Clamp

C. Negative Analog.

To Amp.

Monitor

To Amp.

Monitor

Min. Typ. Max

.75V

Video

1.0V

Video

.75V

Video

1.0V

Video

Black level
Saturated color

Black level
Saturated color 1.00V 1.02V 1.04V

Black level
Saturated color

Black level
Saturated color

0.00V 0.02V 0.04V

0.75V 0.77V 0.79V

0.00V 0.02V 0.04V

Blk-.02V
Blk+.73V Blk+.75V Blk+.77V

Blk-.02V Blk+0.00V Blk+.02V
Blk+.98V

Blank

Blk+1.00VBlk+1.02V

Blk+.02V

AC voltages are referenced to the R, G, & B
video input voltage during horizontal sync (Hs).
Blank is the black level voltage during Hs.

Video

Source

D-A

Video

Gnd

To Amp.

IN

R

V

Blk.+.7 V

Monitor

Black levelRed & Green

Blue Black level

Saturated color

D. 4 Line TTL also available.

Black level

Color on

Low intensity

Full intensity

*

R,G,B

Video

Intensity

Gnd

Video

Source

*

No pullup resistor on intensity line.

To Amp.

BIAS

+12V

V

Monitor

B

Note: RS170 and other voltage combinations optional for analog video.

5.4V 5.6V 5.8V

4.85V 5.05V 5.25V
.7V .9V 1.1V

0V

2.7V 3.5V

.2V .5V

6.0V

0V .2V .4V

4.5V 4.6V 4.8V

5

CERONIX

The Sync signals may be of either polarity and separate or composite.2.

XX93 Monitor Electrical Specification.

Sync

Source

For composite sync, vertical and horizontal
sync lines are connected together.

Hs

Vs

Gnd

1.8K

1.8K
220

Monitor

.15V

Ω,

2 PL

High input voltage

Low input voltage

Horizontal sync pulse

Vertical sync pulse

Horizontal frequencies:

Custom horizontal frequencies from 15KHz
to 39KHz are available upon request.

Vertical frequencies:

3.

The Power to the monitor is to be supplied by a secondary winding of an
isolation transformer.

Min. Typ. MaxModel

2.2V 3.5V 20V

-2.7V .30V .80V

1.5uS

65uS

15.5KHz 15.7KHz

29.3KHz 29.6KHz 29.9KHz

31.2KHz 31.5KHz 31.8KHz

34.9KHz 35.2KHz 35.6KHz

37.5KHz 37.9KHz 38.3KHz

4.0uS 12uS
.5mS 1.5mS

15.9KHz

55Hz45Hz 50Hz
61Hz51Hz 56Hz
65Hz55Hz 60Hz
75Hz65Hz 70Hz

120VAC 50Hz or 60Hz

230VAC 50HZ or 60Hz

Power

120VAC 50Hz or 60Hz

230VAC 50HZ or 60Hz

Power

Model 1493

Model 1793

Model 1993

Min. Max. Min. Max. Min. Max.

90VAC

180VAC

35W

90VAC145VAC

290VAC 290VAC180VAC

60W

40W 70W

145VAC 145VAC

Model 2093 Model 2793

90VAC

290VAC180VAC

45W 75W

Model 3693

Min. Max. Min. Max. Min. Max.

90VAC
180VAC

45W 75W 50W

290VAC 290VAC180VAC

90VAC145VAC

145VAC 145VAC

100W

90VAC

290VAC180VAC

50W 100W

6

CERONIX

Five Controls are located on

4.

XX93 Monitor Electrical Specification.

a separate PCB for easy access.

Model 1493

Model 1793 Model 1993

Min. Max.Min. Max.Min. Max.
H SIZE--------------Horizontal raster size
V SIZE---------------Vertical raster size
V RAS. POS.-----Vertical raster position
H POS-------Horizontal picture position
M GAIN---------------------Master gain

10.1" 11.1" 11.9" 12.9"

7.3" 8.3" 8.6" 9.6"
0"

1" Right 1" Left 1" Right 1" Left

0mA .75mA 0mA .75mA 0mA

Model 2093

.50"

0"

Model 2793 Model 3693

.50"

13.4" 14.4"

9.8" 10.8"
0"

1" Right 1" Left

.50"

.75mA

Min. Max.Min. Max.Min. Max.

14.9" 15.9" 20.4" 21.4"

10.9" 11.9" 15.1" 16.1"
0"

1" Right 1" Left 1" Right 1" Left

0mA .75mA 0mA

.60"

0"

1.0"

1.5mA

27.4" 28.4"

20.3" 21.3"
0" 1.0"

1" Right 1" Left

0mA 1.5mA

The board Controls are located on the main PCB:

Focus and G2 on the FBT.
Optional board Controls are: pincushion, video black level, and horizontal hold control.

5.

Image

Environmental

6.

Color Temperature

Horizontal linearity

Vertical linearity

Pincushion

1493

17/19/2093

9300°K 9300°K 9300°K 9300°K

-2% +2%

-2% +2%

-2% +2%

-5% +5% -8% +8%

-5%

-3%

Operating temperature

Storage temperature

Operating humidity

Storage humidity

+5%

+3%

0° C

-8%

-5%

70° C

85° C-20° C
20% 80%
10% 95%

2793 3693

Min. Max.Min. Max.Min. Max.Min. Max.

-10% +10%

+8%

+5%

-10%

-8%

+10%

+8%

7

CERONIX

Picture tube

7.

XX93 Monitor Electrical Specification.

1493-CGA/VGA/SVGA

1793-VGA/SVGA

1793-SVGA

1993-VGA/SVGA

Useful diagonal

Useful horizontal

Useful vertical

Useful area

Spacing of dot/line trios

Phosphor Trio Type

Deflection angle

Light transmission

CRT surface

Phosphor

Useful diagonal

Useful horizontal

Useful vertical

Useful area

Inch mm

13.2 335 16.1 409

11.1 281 12.9 328

8.3 211 9.6 245

92.1 in 593 cm 124 in 804 cm
.0110" .28mm .0098" .25mm

Dot

16 407

12.9 328

9.7 246

125 in 807 cm

22

.0106" .27mm

Dot

90°

Approximately Approximately

57% 50%

Polished/Curved

P22

2093-CGA 2793-CGA

Approximately

53%

Polished/Curved

P22

2093-VGA

Inch mm

18.9 480 26.8 679

15.9 404 21.4 544

11.9 303 16.1 408

189 in 1,224 cm 345 in 2,220 cm

22 2 2

18.9 480

15.9 404

11.9 303

189 in 1,224 cm

22

InchInch mmmm

Dot

90°90°

AR / Flat

P22

InchInch mmmm

Inch mm

18 457

14.4 366

10.8 274

165 in 1,003 cm

2222 2 2

.0102" .26mm

Dot

100°

Approximately

45%

AR / Curved

P22

2793-VGA

Inch mm

26.8 679

21.4 544

16.1 408

345 in

2

2,220 cm

Spacing of dot/line trios

Phosphor Trio Type

Deflection angle

Light transmission

CRT surface

Phosphor

Useful diagonal

Useful horizontal

Useful vertical

Useful area

Spacing of dot/line trios

Phosphor Trio Type

Deflection angle

Light transmission

CRT surface

Phosphor

.0331" .84mm .0326" .83mm

Line

Approximately Approximately

40% 38%

Polished/Curved

P22

2793-VGA

Inch mm

26.6 676

21.3 541

16.0 406

341 in 2,196 cm

22

.0299" .76mm

Line / Variable

110°

Approximately

81%

Polished/Flat

P22

.0307" .78mm

Line

90°

Approximately

40%

Polished/Curved

P22

3693-CGA

Inch mm

35.5 902

28.4 721

21.3 541

605 in 3,901 cm

22

.0394" 1mm

Line

111°

Approximately

32%

Polished/Curved

P22

Line

110°90°

Polished/Curved

P22

.0326" .83mm

Line

110°

Approximately

38%

Polished/Curved

P22

8

Refer to the block diagram on page 15 (foldout) when reading this description.

A

The Video Interface is designed around a custom IC and will accept DC or AC
coupled positive analog video signals. It can also be used with negative analog
and 4 line TTL. This IC has a built in multiplier circuit for the master gain
control and blanking functions. Resistors are used to protect the IC and to set
the gain. The programmed gain is dependent on the input signal amplitude
except with the TTL mode. Solder jumpers and component substations are used
to program the Video Interface for the type of input signal to be received. The
output of the IC drives the video amplifiers. This drive is a current where 0 mA
is black and 10 mA is a saturated color.

B

The Video Amplifiers are of the push pull type. They are built partly on thick
films and partly on the video PCB. Spreading out the amplifier reduces the
component heat and improves the life of the unit. The bandwidth is 25 MHz with
40Vp-p output. The rise and fall times are 20nS.

C

The Beam Current Feedback circuit directs most of the beam current of each
amplifier to the beam current buffer. The only time this current is measured, by
the auto bias circuit, is during the time of the three faint lines at the top of the
screen and three lines thereafter. The CRT auto bias circuit is designed to adjust
the video amplifier bias voltage such that the beam current of each of the three
guns is set to a specific programmed value.

D

The
current signal into a low impedance voltage. This voltage is applied to the auto
bias IC through a 200 ohm resistor. After the three lines of beam current are
measured, the program pulse from the auto bias IC, produces a voltage drop
across this 200 ohm resistor that equals the amplitude of the beam current
voltage.

9

Beam Current Buffer converts the, high impedance low current, beam

E

The CRT Auto Bias IC is a combination of digital and analog circuitry. The
digital part is a counter and control logic which steps the analog circuits through a
sequence of sample and hold conditions. The analog part uses a transconductance
amplifier to control the voltage on a 10uF capacitor (one per gun). This voltage is
buffered and sent to the video amplifiers as the bias voltage. In monitors without
CRT auto bias, this voltage is adjusted manually using a setup procedure to set
the color balance. With CRT auto bias, the color balance is set during the end of
each vertical blanking time.

The control sequence is:

1.

The cycle starts with a sync pulse from the vertical oscillator (15KHz)
or from the vertical sync delay. 15H later the grid pulse starts.

2.

The grid pulse on G1 causes cathode current which can be seen as the
three faint white lines at the top of the screen. This cathode current is
transmitted by the beam current feedback to the beam current buffer
where it is converted to a voltage and applied to the CRT auto bias
input pin. At this time the CRT auto bias IC outputs a reference
voltage at its input pin which sets the voltage across the coupling
capacitor. This coupling capacitor voltage is directly dependent on
beam current.

After the grid pulse is over, the program pulse matches the voltage

3.
from the beam current buffer. If the voltage from the beam current
buffer, during the grid pulse, is the same as the voltage from the
program pulse, the bias is correct and no bias adjustment is made for
that vertical cycle.

F

The timing of the auto bias IC is synchronized to the vertical oscillator and the
flyback pulses. For horizontal frequencies higher than 15.7KHz a Vertical Sync
Delay may be needed to position the grid pulse, generated 3 gray lines, at the top
of the screen. The need for the delay circuit is dependent on the particular CRT
vertical retrace time.

G

The aging of the picture tube (CRT) not only affects the balance of the cathode
cutoff voltage, which is corrected by the auto bias circuit, but it also affects the
gain of the CRT. The
by sensing any common bias voltage change, from the auto bias circuit, and
adjusts the screen voltage to hold the average bias voltage constant. The lower
adjustment on the flyback transformer which is the screen voltage, is used to set
the auto bright voltage to the center of its range. Therefore, the auto bright
circuits sets up a second control feedback loop to reduce picture variation due to
CRT aging. The auto bright circuit is also used to turn off the beam current when
the monitor power is turned off.

Auto Bright circuit actively corrects for CRT gain changes

10

H

The CRT for the 1493, 1793 and 2093 monitors have a 90° deflection angle. The
1993 incorporates 100° while the 2793 CRT has 110° and the 3693 has 111°
deflection angles. These picture tubes have integral implosion protection and a
EHT of 25KV.

H1

The Vertical Dynamic Focus amplifies the parabolic waveform across the
vertical coupling capacitor from about 3Vp-p to about 200Vp-p, depending on CRT
requirements. This waveform sharpens the top and bottom portion of the raster
on dual focus CRT's.

H2

The
horizontal coupling capacitor, using a transformer to produce 300Vp-p output from
an input that is about 33Vp-p. This waveform is added to the vertical dynamic
waveform and sharpens the right and left sides of the raster.

Blanking is accomplished by setting the gain of the interface IC to zero during
blank time. The Horizontal Blanking pulse is generated by amplifying the flyback
pulse. The Vertical Blanking pulse is started by the vertical oscillator one shot
and ended by the counter in the auto bias IC via the "bias out" pulse. The Master
Gain control, located on the remote PCB, sets the gain of the video signal when
blanking is not active. The Beam Current Limiter circuit, which is designed to
keep the FBT from overloading, will reduce the video gain if the maximum
average beam current is exceeded. Also, the beam current is reduced if the FBT
approaches maximum operating temperature.

The
used to receive sync, one for vertical sync and the other for horizontal sync.
Resistor dividers are used to protect the comparator IC from over voltage damage.
For customers who do not require interlace, an additional vertical sync
stabilization circuit is included. This circuit synchronizes the vertical sync to the
horizontal cycle.

Horizontal Dynamic Focus amplifies the parabolic waveform across the

I

J

Sync Interface can accept separate or composite sync. Two comparators are

K

Vertical Oscillator generates the vertical free running frequency when no

The
vertical sync is present. When sync is applied, the vertical oscillator synchronizes
to the leading edge of the sync pulse.

L

The Vertical Control & Output circuit consists of:

1. One shot.

2. Ramp generator.

3. Vertical drive.

4. Vertical output.

11

The sync pulse from the LA7851 triggers a one shot in the LA7838 which clamps
the vertical ramp generation capacitor to 5V during the first half of vertical
retrace. The ramp generation capacitor then charges via a constant current set by
an external resistor. This resistor is connected to the V SIZE pot, located on the
remote control board, for the vertical size adjustment. The vertical drive is a
differential amplifier which compares the ramp voltage to the yoke return
feedback current. The yoke feedback current and voltage circuits are used to set
the vertical linearity. The vertical Output is a power driver, with thermal
protection, which drives the vertical deflection yoke. It also has a special pump up
circuit which doubles the output voltage during vertical retrace. This voltage
doubler also increases the efficiency of the circuit since the high retrace voltage is
not present across the power driver during the trace time.

M
The
loop to generate the horizontal timing. The H POS. adjustment, on the remote
control board, sets the sync delay time which controls the picture position. The
phase locked loop uses the flyback pulse to generate a sawtooth wave which is
gated with the delayed sync pulse to control the horizontal oscillator.

Horizontal Control incorporates a variable sync delay and a phase locked

N
The Horizontal Driver supplies the high base current necessary to drive the

horizontal output transistor which has a beta as low as three. A transformer is
used to step up the current from the driver circuit and also protects the horizontal
output transistor from a continuous turned on state. A special clamp circuit is
connected to the transformer which reduces the turnoff time of the horizontal
output transistor for reduced power dissipation.

O

The Horizontal Output transistor is mounted to the rear frame which acts as a
heat sink. The collector conducts the 900 volt primary flyback pulses which should
not be measured unless the equipment is specifically designed to withstand this
type of stress. A linear ramp current is produced in the horizontal yoke by the
conduction of the horizontal output transistor (trace time). A fast current reversal
(retrace time) is achieved by the high voltage pulse that follows the turn off of the
horizontal output transistor. This pulse is due to the inductive action of the yoke
and flyback transformer.

P

The main function of the Flyback Transformer (FBT) is to generate a 25,000 volt
(EHT) potential for the anode of the picture tube. This voltage times the beam
current is the power that lights up the phosphor on the face of the picture tube.
At 1.5mA beam current, for the 2793 monitor, the FBT is producing almost 38
watts of high voltage power. The FBT also sources the focus voltage, screen grid
voltage, filament power, and has two more secondaries which are used for control
functions. The FBT has a built in high voltage load resistor which stabilizes the
EHT, for the low beam current condition. This resistor also discharges the EHT,
when the monitor is turned off, which improves the safety of handling the
monitor.

12

Q

The Remote Control PCB houses the:
CONTROL DESCRIPTION CIRCUIT

1. H SIZE ----------- Horizontal raster size --------- Diode modulator

2. V SIZE ----------- Vertical raster size ------------- Vertical control

3. V RAS. POS. --- Vertical raster position ------- DC current to V. yoke

4. H POS ------------ Horizontal picture position -- H. sync delay

5. M GAIN ---------- Master gain ---------------------- Video interface

R

The Horizontal Size Control circuit has four inputs:

# SIGNAL FUNCTION

1. Horizontal size ------------------------------ Horizontal size control

2. Beam current -------------------------------- Blooming control

3. Vertical linear ramp -----------------------

4. Vertical parabolic + V. linear ramp ---

(#4)-(#3)=Vertical parabolic

}

(Pincushion)

The horizontal size control circuit sums the four signals at one node plus the
feedback from the diode modulator to drive a switching mode power driver. The
output of the power driver is then connected to the diode modulator through an
inductor to complete the control loop.

S

The Diode Modulator is a series element of the horizontal tuned circuit. It forms
a node between GND and the normal yoke return circuit. If this node is shorted to
GND, the result is maximum horizontal size. Forward current in the diode
modulator, at the start of retrace, keeps the node voltage clamped to ground until
enough current flows from the horizontal tuned circuit to exceed this forward
current. The horizontal size, therefore, is controlled by controlling the current to
this diode via the horizontal size control circuit.

T

A Voltage Doubler is used in the power supply for two reasons:

13

1. To improve the efficiency of the power supply.

2. To permit 120 volt and 230 volt operation. For the 230 volt
operation the voltage doubler is replaced with a bridge rectifier.

U

XX93 Monitor Block Diagram.

The Switching Regulator is synchronized to the horizontal pulse and drives a power
MOSFET. Unlike most regulators that have a common GND, this power supply has a common
V+ and current is supplied from V- to GND. The MOSFET is connected to V– and signal
ground (GND) through a transformer which is used as an inductor for series switch mode
regulation. An operational amplifier, voltage reference, comparator, and oscillator in the power
supply controller IC are used to accomplished regulation by means of pulse width modulation.

The transformer has two taps on the main winding which are used to generate the +16 volt
and +24 volt supplies. It also has a secondary which is referenced to V- and supplies the power
supply. Since the power supply is generating its own power, a special start up circuit is built
into the power supply controller IC that delays start up until the capacitor which supplies the
IC is charged up enough to furnish the current to start the power supply. This capacitor is
charged with current through a high value resistor from the raw dc supply. This self sustaining
action is why the power supply chirps when an overload or underload occurs. Additional
secondaries to drive the horizontal raster shift circuit and the video amplifiers are also included
in the power transformer.

V

The Load consists primarily of the horizontal flyback circuit. The power supply will not
operate without the load since the voltage that sustains the power supply comes from a
secondary in the power transformer and depends on some primary current to generate
secondary current.

W

A +12V regulator is used to supply current, to all the control circuits in the monitor, with the
exception of the power supply. Many of the control circuits are decoupled from the +12 volt line
with a resistor or diode to minimize noise from common current loops.

X

The Over Voltage Protect circuit is built into the power supply and monitors the flyback
transformer peak pulse voltage. This circuit will turn off the power supply and hold it off if the
EHT exceeds its maximum rated value. Since excessive X-ray output occurs with excessive
EHT, this circuit provides X-ray protection.

Y

The Fault Detector senses beam current and temperature. This circuit will activate the
power supply shutdown circuit if either the maximum temperature is sensed or if the beam
current becomes large enough to threaten the FBT.

Z

The Degaussing circuit is connected across the isolated AC line. A posistor is used to allow a
large current to flow, in the degaussing coil, on power up. This current is then gradually
reduced by the increased temperature of the positive temperature coefficient thermistor in the
posistor. A relay is used to short the degaussing coil after the degaussing operation. This
greatly reduces posistor residual current in the degaussing coil. When repairing a monitor, the
degaussing coil should be unplugged, to avoid possible damage to the degaussing coil shorting
relay.

GAME

VIDEO

RGB

SYNC

V. & H.

VIDEO

3

SYNC

Interface

2

Interface

BLANKING

V retrace

Beam limit

High temp. limit

VERTICAL

J

VERTICAL

s

V

F.B.P.

M. gain

SYNC

DELAY

3

AB

I

F

OSCILLATOR

LA7851

K

LA7851

HORIZONTAL

CONTROL

s

H

H. Pos.

Sync delay

M

V. Size &

V. Ras. Pos.

REMOTE

CONTROLS

(PCB)

ISOLATION

Transformer DOUBLER

(IN GAME)

DEGAUSSING

CIRCUIT

Z

VOLTAGE

Raw DC

320V

+24V

G2≈290V

2 For Dual Focus

On Video Board.

G1≈–20V

VIDEO

AMPS.

Bias

3

3

Bright

3

CRT AUTO

BIAS IC

H. sync (FBP)
V. sync

CA3224E

Auto

Beam

3

Current

Feedback

G

3

Beam current

buffer

Program pulse

Grid pulse

E

VERTICAL
CONTROL &

3

CRT

C

V

DY

DY

H

D

H

EHT≈25KV

Dynamic Focus
used only on Dual
Focus CRTs

Horizontal
Dynamic
Focus

H2

OUTPUT

LA7838

I. V. Feedback

EHTG2

V+
Vertical
Dynamic
Focus

P

L

+

H.H.

Driver

PINCUSHION

HORIZONTAL

Size Control

QR

+52V to +129V

(VIDEO & DEFLECTION)

SWITCHING

REGULATOR

Shutdown

OVER
VOLTAGE
PROTECT

T

V-

-200V

FAULT

DETECTOR

LOAD

Y

Output

NO

DIODE

Modulator

Beam Current

+12V

Regulator

Vertical Deflection

Sync

X

+16V
+24-27V
U

FBP

FBT

S

V

+12V

W

Supply

H1

2

14

15

BB

12V

TC2 GND

+

GND

TC9 iB OFF

16V

CC3

ABA

464Ω

261

258

G

Beam current

Feedback

Beam current

Feedback

Beam current

Feedback

B+G+R=∑

SOCKET BOARD CONNECTOR (TC) 206

TC 6TC 10

0Ω

088

6.8K

099

PN2222

1

2

3

100B

5

0Ω

100A

10

6

1/2

7

LM393

5

+

210

OPEN

077

.039uF

081

1N4937

080

T

U

909Ω

064

227

10

396 11

A- BL

+12V

IN

R

G

B5

K

243

218

264

Red Video Amp.

0

Green Video Amp.

Blue Video Amp.

Auto Bias

V

Sync

1

2

3

4

5

6

TC7 Red
TC5 Green
TC 3 Blue

62K

+12
V

098

PN2222

379

200K

CS=.45"

383

Retrace Boost

VERTICAL BLANKING

22K

384

0Ω

CS=.74

389

GND

PN2907A

212

4-7VDC

Hs

4-9Vpp 61,B4

HORIZONTAL

BLANKING

PN2222A (CPQ1322)

2.15K

078

072

GND

FDH400

084

FDH400

086

FDH400

213

16 13

B

IN R

R

21 1415 7 8

A5

J

S

412Ω 105Ω 604Ω

260 244 245

+12V

P

239

oRo Go GAINM+ ENA

B

BL

Controls XRC5346A

R

225

223

226

7

236 235

1N4148

271

278

0Ω

1N4148

270

277

8

0Ω 0Ω 0Ω

281 280 283

VC

G

5

GND

GREEN

INPUT

286

288

9

RED

GND

VC

292

3

R

VC

4

INPUT

BB

16

Beam

Current

Buffer

510Ω

006

+12V

6.8K

250

1N4148

253

1

1K

1.8K

248

.047uF

GND

270Ω

093

VIDEO GAIN LINE

604Ω

076

4-7VDC

5-9Vpp

11.5-12.5V

0Ω

228

512

TTL

241

BG

242

VC

BLUE

INPUT

CC DD EE FF GG HH II JJ KK LL MM NN OO PPAA

0Ω

8

211

1/2

LM393

210

4

208

207

0VDC

56Vpp 63,D6

Vs

62,B4

GND

IN

B

A5

L

266

276

GND

B

VERTICAL

6

CC DD EE FF GG HH II JJ KK LL MM NN OO PPAA

VIDEO BOARD

ARC PROTECT

Auto

Bright

6.8K

251

2

2.3-

2.7V

1.8K

3

+

368

1.8K

252

Hs

+12V

GND

0Ω

293

12V

VC

0

4

R

233

231

232

1N4148

268

284

s

V

VC

SYNC

800

2-3VDC
4Vpp 64,C4

4.5-5.3V
5Vpp 16,E5

GND

1.8K

328

1.8K

H

s

HORIZONTAL

VC

SYNC

12

CRT

127V TC8

TC4

1N4007

090

68.1K

085

100uF

+

089

127K

087

100uF

+12V

209

Vs

Vs

+

100uF

267

221

PN2222

274

M & N reverse Hs.

325

270Ω

326

0Ω

270Ω

330

331

TC1

2.15K

272

273275

GND

M

N

M

N

.14-.16V

Product safety note: Components marked by the

Horizontal

RC5

Size

10K

481

When replacing any of these components, be sure to use the parts specified in the parts list.

+12V

GND

RC8

+127V

Vertical

Vertical
Position

RC3

RC
002

Horizontal

Master

RC2

2.15K

062

+16V

+12V

OUT IN

+

100uF

304

12.1K

Hs

329

500Ω

Size

Raster

1K

20K

Position

1K

Gain

Remote Control

490

PCB

0Ω

0Ω

295

067

7812

+

GND

296

56pF

1.8K

3

I1

352

482

RC6

750Ω

486

483

+12V

GND

RC4

220uF

298

7.3VDC

5.5Vpp

RC1

01,D6

RC7

Hs

484

485

Vs

+127V

FBP
GND

+16V

+

MPSA64

D

036

Beam Current
Limiter Circuit.

14

355

13

355

10uF

014

1N4148

018

LM339

1.5-2VDC 60,D6

LM339

+12V

PN2222A

071

75Ω

066

CPQ1322

7.15K

366

1K

012

1K

065

7.15K

+12V

364

PN2222

22K

323

4

5
6

7

270Ω

327

1/4

LM339

+

1/4

LM339

+

3

12

+12V

355

2

1

355

GND

6.8K

321

6.8K

322

+24V

470Ω, 1/2W

Relay

200V.5A

470

468

.093" pin

162A

.047uF

GND

CC

318

159

25Ω@25˚C, 2A

Posistor

158

.093" pins

Degaussing

CC2

Connector

162

100K

HEAT

SINK

378

510Ω

004

0Ω

203

1,000pF

369

100uF

+

376

18Ω

367

1N4007

333

0Ω

202

17

220uF

334

18Ω

063

GND

9

+

1/4

8

11

+

1/4

10

200K

.05VDC

246

7V pp 58,C5

255

PN2222

257

200K

256

33K

247

Inrush Current Limit

CPR0434

Black Wire.

CC1

161

symbol on this schematic have special characteristics important to safety.

LA7838

Vertical

Deflection

+12V

1

Ramp

Reset

One Shot

377

Tr.

234 567 8 9 1011 12 13

5.5-6.4V
3Vpp 21,D5

93.1K

375

28.0K

402

100K

403

+12V
GND

Vs

5.5-6.5V

1.2Vpp 19,D5

11-12.4V

20, D5

20 19 18 17 16 14 13

VERTICAL

V+

Horizontal

SYNC INPUT

2.7K

2

5

15.8K

020

CPR0432

100kΩ@25˚C

T

180

15.8K

353

1K

357

3.92K

3.92K

356

Vs,Hs

254

169

I4

12K

7

I2

8.8K22K

I3

GND

H. S. +12V

+6V

I BEAM

7-10VDC

61, C2

FBP

68.1K

15.8K

360

354

2.1-2.4VDC

Hs

4.6Vpp 59,D6

3.3nF

358

2.2nF

150

FR205

148

152

2.2nF

155

FR205

156

3A Fuse

146

145

PC

PC

120VAC

2

INPUT

1

out

Ramp

Gen.

V. size

Reset

out

R/C

Vs

or

VERTICAL VERTICAL

± SYNC INPUT

PICTURE

POSITION

8

Hs

IA

I12

Slope

Vs

.01uF

374

VERT.

O/S

4Vpp 02,D6

1nF

351

Ramp

.1uF

410

OSC.

1.2Ω, 1W

Control

50/60Hz

5-6VDC

1.4Vpp 22,E5

1uF

401

385

DELAYED

SYNC O/S

Hs

9

25K

I5 350

6,10

-1.4V -2.8V

2.33K

J13 J14

91.4K

J1

2SA1371E

1

529

112
0Ω

114A

10.6K

J5

JD

260Ω

+2.9V

J16

JC

130Ω

+1.4V

J15

11K

J2

2

23.2K

106

62K

220uF

143A

250V

0Ω

144

220uF

250V

163

36K

143B

0Ω

114

7

90K

J6

220uF

128

8,14

Vert.
Drive

5.5-6.5V

Vs

1.4Vpp

23,F4

Vs

+25V

Retrace
Booster

Drive

68.1KΩ

393

GND

127K

388

2.2M

365K

362

363

4-6VDC

V

2.8Vpp 18,D5

V. osc.

ADJ.

OSCILLATOR

7.3-8.7V
4Vpp 03,D6

VERTICAL

TR.

-.2VDC

Vs 5.5-6.3V

1.5Vpp 04,E6

330pF

11

330pF

45K

I6

1

GND

2.7K

392

1uF

391

127K

361

Vs

OSC. O/S

SAW TOOTH

GENERATOR

Hs7.3-8.7V

6.8K

I13

100K

173

100K

390

.01uF

414

3.8Vpp 17,E5

1.4Vpp 05,E6

6.8nF

348

62K

167A

FBP
GND

+6V

I BEAM

V+

101.6K

JBJA

J18

JE

20

4.67K

220uF

175

BZT03-D160

160Vz

181

100K

113

6

6.5-7.5VDC

1,000pF

110

3

5

88K

J4

4

3.3nF

108

56pF

J3

104

33.2K

J7

3-4VDC

6.8nF

102

41,D1

6.5-7.5VDC

.5-.8VDC

3.4-4.2VDC

.1-.5VDC

9

5.7-6.3VDC

3Vpp

47,D2

56pF

107

1

2
3

4

5

6

7

8

330pF

123

-265V

CAUTION! POWER SUPPLY VOLTAGES REFERENCED FROM V-.
SCOPE GND MUST NOT BE CONNECTED TO GND AND V- AT THE SAME TIME.

V- V-

Thermal Protection

Vert.
Out

GND

100pF

398

1N4007

470uF

382

382

380

1.5-2.7V

Vs

24,E4

24Vpp

4.5-5.3V

Vs

5Vpp 16,E5

V Ref.

MULTIPLIER

BIAS

Hs 3-7VDC

0Vpp

06,E6

+

1uF

347

18

1uF

+

H. +12V

I PRA

Video V+

+

100uF

120

+43V

250V

1N4937

121

GND

16.3-19VDC

55, E1

+15V

INPUT

+17V

ERROR

INPUT

AMP.

INPUT

Over

COMP.

Voltage

}

Protect

INPUT

Output

CONTROL &

FAULT SENSE

4uS

COMP.

DELAY

Rx

Osc.

Cx

+7.5V

OUTPUT

Current

SENSE

DRIVE

REF.

XRC5184

115

J PRA PINS:

+

V-

Boost

0Ω

395

Vs.1-.3VCD

15

GND

LA7851

784523

13

I7 I8

416

V+

100uF

+

118

+61V

1N4937

122

16

14.8-18VDC

0Ω

15

132

14

5.5-6.8VDC

3-5VDC
5Vpp 52,F1

12
13

3-6VDC

0.1VDC
1Vpp 51,F1

11

1-4VDC

12Vpp

10

9

J PRA

111

3,10,15,

4.7Ω

396

.1uF

397

22K

370

15.8K

408

PROTECT

HORIZONTAL
OSCILLATOR

.2Vpp 07,E6

33K10K

.01uF

220uF

100V

182

+127V

1N4937

167

30Ω

139

50,E2

&19

Vertical Linearity Circuit

DECREASES

200K

TOP AND
BOTTOM

412

VERT. SIZE.

I

D5

200K 200K

PN2222

411

1N4148

84.5K

407

406

GND

.4VDC

Hs

.7Vpp 12,E5

12

X-RAY

DISCHARGE

3.6Vpp 08,E6

14

1K

I9

6.8nF

+55V

1N4937

20

1.00M

17 18

14.7K

MPSA64

2,200pF

131

Hs3-4VDC

15

9.31K

I10

+ 1600Hz

0Ω

0Ω

198A

+16V

+

1,000uF

171

1
2

8
5

9

141

12

16

.1uF

124

V-

1.00M

15.8K

J11 J12

510Ω

12

D

134J10

J8

18Ω

133

1N4007

127

Hs2.4-3.4VDC

345346344

3.92K

418

5.4-6VDC
11, E5

+

comp.

-

5-6VDC

09,E6

7Vpp

H.Fo ADJ.

680Ω

I16

+800Hz

1,000uF

166

191K

126

38.3K

J9

13

116

PN2907A

372371

PN2222

1N4148

405

+12V

GND

11

415

H. V+

Hs

340Ω

I15

ICID

1N4937

170

1N4937

169

GND

6
3
4

10 / 11

0Ω

10

533

533/532

3,300pF

125

CPQ1304

136

0.33Ω
2W

137

100pF

129

200K

413

409

D5

H

INCREASES

TOP AND

BOTTOM

VERT. SIZE.

373

169K

404

10.8-12V

10, E6

3.92K

417

10

17

2.15K

336

170Ω

I14

+400Hz

16

IB

+61V
+43V

I BEAM

V+

1,000uF

450

1N4937

168

FR205

142

1N4148

130

No DVM

300Vpp 40,G1

HEAT
SINK

200pF
1KV

138

47Ω
1/2W, CC

140

V-

TP49, G1

0VDC

27Vpp 57,F1

FBP
GND

+6V

+

135

+25V

+25V

Hs

22-28V

.8Vpp 25,F7

V. +12V

0Ω

422

+43V

V+

+61V

+25V

0Ω

136A

1770Ω176

Vs

0Ω

196

2.2K.5W

341

+25V

FBP

GND

PS FBP

H. S.+12V

FBP

GND

+12V

PS FBP

PS FBP

FBP

+12V

GND

0Ω

Measurements
are taken with
a white screen.

Hs - 5uS/div.
Vs - 2mS/div.

0VDC

Hs

56V

EHT

470Ω

1/2W

465

FOCUS

SCREEN

Beam

4
3

FIL.

2

Current

GND

VERTICAL

DEFLECTION

YOKE

S4

S2

S1

FR205

440

FR205

438

1.5uF

250V

400V

443

HER205 HER205

477

.10Ω

.10Ω

1W
475

Vs

20VDC

15Vpp

37,I6

Min.Max.

H Size

GND

478

1W
476

28,D3

0Ω

524

&

525

CPT1538

12mH

447

YC4

445

.033uF

800V

1.6KV
441

0.1uF
200V

437

GND

0Ω

0Ω,

092

092A

0

1

2

3

4

5

6

7

8

TC11

Fil.

TC12

Fil. Rtn.

Video
Board

800

NO DVM

Hs

.9KVpp

1N4007

+

100uF

200Ω 2W

12-18VDC

Hs

Horizontal Drive

2SC
4159

33Vpp 26,E7

337

GND

342

338

340

19

20

100Ω

I11

2,200pF

343

Transformer
CPT1505

2

332

3

1

4

12-18VDC

50Vpp

2SD1651

1N4007

435

1.2Ω

434

29,F6

27,G6

NC

433

0Ω

452

GND

Vs

V-

0Ω

466

390Ω, 2W

12-18VDC

1,000uF
35V

VRP

10.0K

I BEAM

022

+6V

VFB

10.0K

023

12.1K

+6V

034

I BEAM

V-

V HYP

H SIZE

+

449

0Ω

193

H. S. +12V

13

12

GND

15.8K

62K

011

421

0Ω

192

V

0 TO 7 VDC

+6V

4

1/4

14

LM324

033

11

High Temperature Or

Excessive Beam

037

Current, Monitor Shut

Down Circuit.

3

1/4
LM324

2

033

200K

I BEAM

V-

+6V

VFB

V HYP

H SIZE

0Ω

194

.33uF

10K

038

082

200K

040

6V

3.92K

009

68.1K

I BEAM

097

.1uF

010

H SIZE

V-

+6V

GND

+25V

HS +12V

44.2K

+

H SIZE

100uF

061

043

12.1K

045

GND

5

6

.01uF

047

109

HORIZONTAL WIDTH CONTROL

H. S. +12V

10.0K

029

5

1/4
LM324

6

033

Parabolic

Pincushion

Blooming

correction.

.01uF

054

8

1/2

7

LM392

049

4

10.0K

3-5Vpp

RAS. POS.

510Ω

021

1

10.0K

7

5.6-6.2VDC

2-3.6Vpp 33,B2

Correction

200K

044

44.2K

058

10K

055

095

Vs

31,F5

2SC3467

+

100uF

026

22K

017

200K

005

031

6V

3.3K

050

Vs

2

3

2-2.5VDC

4.4Vpp 39,B3

+

GND

28K

041

3.3K

042

1/2
LM392

6.8K

056

420

100uF

25V

035

0Ω

019

2SA

1371

008

9

10

28.0K

049

Hs

0Ω

191

100Ω

1/2W

394

GND

1/4
LM324

3.3K

053

-Linear

Pincushion

Correction

5.6-6.2VDC

1-1.7V 34,B2

096

1

6.8nF

057

+61V

+43V

10.0K

051

033

15.8K

030

3.3K

052

1N4937

462

2.7K

060

0Ω

8

Vs

Open

419F

22K

189

4.7Ω

185

4.7Ω

195

4-19VDC

27Vpp 36,J7

510Ω

0.8-7VDC

12Vpp 38,J7

461094

Screen

FOCUS

FLYBACK

TRANSFORMER

10

6

9

8
7

5

1

CPT1558

0Ω

Open

419B

419E

0Ω

419A

0Ω

188

HORIZONTAL YOKE

446

YC3

107V or 127VDC

120Vpp 250Vpp

H. Linearity

4VDC

20VDC

30Vpp 35,H7

200Vpp

Min.Max.

CPT1528

Hs

50uH

IRF520

460
Hs

EHT

453

YC1

426

YC2

427

Horizontal Raster Adj.

150Ω 1/2W

425

270Ω

SR

424

510Ω

423

SL

Hs
32,F6
H Size

Min.Max.

470Ω

430

1/2W

428

coil

1,000pF

432

431

Hs

H Size

444

457

458

0Ω

454

1nF
500V

4VDC

463

11Vpp

Ω

470

1/2W

464

6.8uF 100V

456

HORIZONTAL WIDTH DRIVE

No
.

LTR.No
.

X

X

X-

X-Y VDC

Y V

X-Y VDC

Sync.

TP-REF.Vp-p

WAVEFORM

LEGEND

BOARD PART No.
PART No. ON PRA.
PRA PIN No.

DC VOLTAGE RANGE,

{

USING A DMM.
USE V. or H. SYNC.

AC VOLTS

Peak to Peak

Measured with scope

TEST POINT

ASS. REF.

CERONIX

SCALE
:

DRAWN BY:

CERONIX Model 1493-CGA Monitor Circuit.

CERONIX
PART NO.

DATE & REV.

NONE

F. H.

2/18/92

CPA4233, CPA4235

13350 New Airport Road
Auburn, California 95602

4/10/96-E1

9/30/96-E4

3/24/99-E5
03/06/02-E8

9

16

9

ABCDEFGHI J

1

2

3

4

5

6

7

62K, 011
1K, 012

A64

036

15.8K, 037
10K, 038

200K, 040

28.0K,

039

039

043

44.2K,
044

200K,

12.1K, 045

046

0Ω, 048

062

2.15K,
18Ω, 063

064

909Ω,

1K, 065
75Ω, 066

0Ω,067

0Ω, 068

0Ω, 222

223 242

224

225

226

227

0Ω, 228

0Ω,

293

292

0Ω,

+

220uF

298

294

7812, 296
0Ω, 295

231

235

235

236

236

6
5

291

4
3
2
1
0

0

0Ω, 297

232
233
234

230

230

0Ω, 001

.1uF

010

10uF

+

014

041

3.3K,

.01uF, 047

071

070

070

221

237

288

290

300

100uF

Remote Connector

002

+

016

016

0Ω, 015

042

3.3K, 050
LM392

100uF

+

061

2222-Mot.

072

2222-Mot.

219

220

C5346A

241

239

238

285

286

287

301

302

+

304

CPS1804

1371

008

009

3.92K

4148, 018

22K, 017

LM324

033

12.1K, 034

10.0K, 051

049

240

0Ω,

303

052

3.3K,

3.3K, 053

.01uF, 054

10K, 055

6.8K, 056

6.8nF,

44.2K, 058

2.7K, 060

.039uF,

081

2.15K,

074

0Ω, 217

H400, 213

218

266

NORMAL POLARITY SHOWN

283

284

282

282

281
0Ω,

311

310

305

078

075

075

280

243264

0Ω,

4937,

604Ω,

263

+

100uF

267

278

308

.33uF

215
0Ω,

262

268

277

312

0Ω

019

15.8K, 020
510Ω, 021

10.0K, 022

10.0K, 023
0Ω, 032

10.0K, 031

030

15.8K,

057

082

080

077

077

076

206

0Ω, 214

0Ω, 216

244

105Ω,

260

261

412Ω,

270

271

276

313

307

315

316

510Ω, 004

003

200K, 005

006

+

026

10.0K, 029

097

096

10.0K, 095
0Ω, 094

093

270Ω,

088

0Ω,

127K, 087

CPS1757

LM393

0Ω, 211

210

247

247

1.8K, 248

6.8K, 250

33K,

254

2222

256

255

255

200K,

2222

259

15.8K,

3.3nF,

3.92K, 356

LM339

355

47nF,318

320

321

6.8k, 322

6.8K,

006510Ω,

527
024

025

4007, 090

6.8K, 251

0Ω, 365

127K, 361

1K,

357

22K, 323

007

100uF

+

035

100uF

68.1K,

28.0K,

0Ω, 083

+

100uF

089

H400,084

68.1K, 085

400, 086

12 pin video board connector.

+

100uF

209

212

2907

245

246

604Ω,

200K,

258

257

464Ω,

272

272

100K,

3.92K,

274

273

275

2222

319

309

317

0Ω, 314

027

028

0Ω, 092

0Ω, 092A

1.0K, 208

252

252

4148,253

1.8K,

22K, 370

1.8K, 368

18Ω, 367

7.15K,

7.15K,

2.2M, 363
365K, 362

365K, 362

360

358

0Ω. 324

1.8K, 325

099

6.8K,

205

205

47nF,207

366

366
364

270Ω, 326

100K, 113

1371

112

JA

105

106

62K, 098

2222

0Ω, 202

0Ω, 203

0Ω, 204

100uF

+

376

93.1K,
2222

200K, 372
200K, 371

.01uF

414

IA

352

56pF

354

68.1K,

0Ω, 328

270Ω, 327

270Ω, 330

0Ω, 114A

JB

JC & JD

1nF

110

3.3nF
108

56pF
107

56pF
104

103

103

6.8nF

102

101

10

0Ω, 100A

5

100B

201

381

0Ω, 200

199

399

377

1nF, 369

375

373

H

409

2907

411

200K, 413

200K, 412

Horizontal Control

351

1000pF,

12.1K, 329

15.8K, 353
4007,333

339

1.8K, 331

529

115A

J PRA, 111 Power Supply

127

4007, 116

+

380

1uF

347

334

402

404

404

+

+

382

1uF

401

403

407

407

415

120

383

200K,

0Ω, 389

346

.01uF

332

118

119

IB IC ID

348

220uF

0Ω, 198A

198

381A

470uF

50V

LA7838

374.01uF,

2222

330pF

H. Drive,

115

C5184

+

4007,
+

28.0K,
100K,

169K,
4148, 405
4148, 406

84.5K,

15.8K, 408

.1uF, 410

CPC1058

LA7851

350

6.8nF

306

CPT1505

349

18Ω, 133

0Ω, 114

JE

2.2nF
131

A64

124

.1uF

200K, 109

+

0Ω, 117

0Ω, 195A

0Ω,196

384

2222379

22K,

100pF,398

.1uF

250V

397

4.7Ω, 396

6.8nF

345

335

2.15K,

C4159

337

+

100uF

338

+

220uF

128

191K,

195

0Ω, 194

384A

1.2Ω,1W, 385

0Ω

400

0Ω, 395

100Ω,.5W,394

3.92K, 417

+

1uF
344

336

336

336

1.00M, 134

126

126

3.3nF
125

330pF

123

123

122

121

191

0Ω, 192

0Ω, 193

188

CPM
2028

378

127K,

392

393

1uF

391

391

2.7K,

68.1K,

3467

420

0Ω, 419A

3.92K, 418

416

I PRA

2.2nF,343

200Ω, 2W

149

529A

.33Ω, 2W, 137

CPQ1304

4148, 130

189

0Ω, 136A

Retighten nut after
wave soldering.

CPM2123, 135

+

1,000uF

35V
171

0Ω, 190

+

387

+

0Ω, 187

1,000uF

35V

388

390

100K,

424

423

S2

0Ω, 422

426 427

Yoke Connector .062" Pins

0Ω, 419B

390Ω, 2W, 421

470Ω

.5W
428

4007, 342

431

2.2K, .5W
341

340

0Ω,

132

132

47Ω, CC,140

0Ω, 531

136

449

448

425

SR

430

171A

171A

500

446

1,000pF

200pF, 138

136A

0Ω, 172

0Ω, 186

1,000uF

+

35V

501

+

502

508

0Ω,

432

1.2Ω, 434

30Ω,139

532

129

100pF

Jumper

under

heat sink.

4937, 170

4937, 169

4937, 168

167

4937,

185

173

0Ω, 184

100K,

450

504

503

509

447

445

1.5uF, 400V

473

2SD1651, 433

0Ω, 480

4007, 435

4937, 141

533

+

CPC1112

220uF, 100V

182

183

BZT03, 181

CPR
0432

0Ω,

180

452

451

451

505

506

0Ω

507

512

511

510

514

CPC1069

0.033uF, 800V
Label; WHV 333 H

FR205, 440

.10Ω,1W

.10Ω,1W

166

FR205, 142

0Ω, 177

0Ω, 178

515

444

443

0.10uF, 200V

475

476

62K, 143A

36K, 143B

0Ω, 165

0Ω, 165A

167A

62K,

+

220uF, 250V

175

0Ω, 176

0Ω, 525

0Ω, 526

FBT: 453

FBT: Hitachi BW02651,
CPT1558

516

442

517

441

FR205, 438

437

HER205

HER205

477

478

436

439

220uF, 250V

0Ω, 164

+

Black Wire

Degaussing Conn.

161

.093" PINS

12

162A

.093"
PIN

3

Blue Wires

0Ω, 524

0Ω, 466

465

470Ω, .5W, CC

0Ω, 454

150uH,

CPT1528

457

+

144

220uF, 250V

163

162

518

6.8uF, 100V,
456

151

0Ω, 152

154

153

120-230V, 14Ω

CPA4233
Hf = 15.75kHz
Vf = 60Hz

POWER

Wire Tie, 145A

CPS1753

145

150

FR205, 148

2.2nF

155

2.2nF

FR205, 156

POSISTOR
CPR0434

158

472

0Ω, 523

510Ω, 461

IRF520

50uH

CPT1511

458

3A-T

FUSE

146

Wired for;

120VAC, 50-60Hz

157

157

CL200, 159

522

521

468

RELAY

470

1/2W,CC

470Ω,

Residual Current

463

1nF

470Ω

4937, 462

.5W

464

460

CPA4235
Hf = 15.75kHz
Vf = 60Hz

147

520

DEGAUSSING

106

106

1

118
120
121
122
166
166
185
188
189
191
195
218

2

218
221
223
225
226
227
231
232
233
236
236
239
242

3

243
261
261
264
266
266
268
268
270
270
271
271

4

273
273
275
275
276
276
277
277
278
278
284
286

5

288
292 7 PIN HEADER
292 6 PIN HEADER
423 510Ω 5%,1/4W
424
425
430 0Ω JUMPER
430 LIN. INDUCTOR
431 LIN. INDUCTOR
431
444
444 1.5uF 5%,400V
447 12mH INDUCT.

6

529 191K 1%,1/4W
529A
532
533 0Ω JUMPER
CRT M34AFA13X07
V+ 51.3-52.7V DC.
V+
Hf

Video Negative Analog

7

NOTES

VALUE PART No. BD SCH

7.15K 1%,1/4W

8.06K 1%,1/4W
100uF, 25V
100uF, 25V
1N4937
1N4937
S.M.INDUCTOR
S.M.INDUCTOR

4.7Ω 5%,1/4W
0Ω JUMPER
22K 5%,1/4W
0Ω JUMPER

4.7Ω 5%,1/4W
0Ω JUMPER
340Ω 1%,1/4W
0Ω JUMPER

20.0K 1%,1/4W
0Ω JUMPER

88.7Ω 1%,1/4W
62K 5%,1/4W

20.0K 1%,1/4W

75.0Ω 1%,1/4W

4.7Ω 5%,1/4W
0Ω JUMPER
340Ω 1%,1/4W

6.8K 5%,1/4W

20.0K 1%,1/4W
0Ω JUMPER
0Ω JUMPER

15.8K 1%,1/4W
100Ω 1%,1/4W
0Ω JUMPER
301Ω 1%,1/4W
1N4148
1N4148 REV.
1N4148
1N4148 REV.
1N4148 REV.
1N4148
412Ω 1%,1/4W

2.15K 1%,1/4W
1K 5%,1/4W
30Ω 5%,1/4W

75.0Ω 1%,1/4W
301Ω 1%,1/4W

75.0Ω 1%,1/4W
340Ω 1%,1/4W

75.0Ω 1%,1/4W
301Ω 1%,1/4W

75.0Ω 1%,1/4W

75.0Ω 1%,1/4W

75.0Ω 1%,1/4W

270Ω 5%,1/4W
150Ω 5%,1/4W

LIN. INDUCTOR
.68uF 5%, 250V

0Ω JUMPER
0Ω JUMPER

53.3-54.7V DC.

15.75kHz
Video Board
Video Board
Positive AnalogVideo

Power: 120VAC

CPR0142
CPR1068
CPC1102
CPC1102
CPD1253E2F2
CPD1253
CPT1552
CPT1562
CPR0003
CPR0050
CPR0015
CPR0050
CPR0003
CPR0050
CPR0129
CPR0050
CPR0153
CPR0050
CPR0125
CPR0018
CPR0153
CPR0124
CPR0003
CPR0050
CPR0129
CPR0013
CPR0153
CPR0050
CPR0050
CPR0145
CPR0120
CPR0050
CPR0128
CPD1251
CPD1251
CPD1251
CPD1251
CPD1251
CPD1251
CPR0130
CPR0138
CPR0009
CPR0033
CPR0124
CPR0128
CPR0124
CPR0129
CPR0124
CPR0128
CPR0124
CPR0124
CPR0124
CPS1752
CPS1781
CPR0006
CPR0004
CPR0367
CPR0050
CPT1539
CPT1517
CPT1539
CPC1042
CPC1069
CPT1538
CPR0169
CPR0050
CPR0050
CPR0050
CPP1711

52.0V DC.

54.0V DC.

CPA4242
CPA4234

0.00-1.00V

1.10-5.60V

D2
D2
E2

F2
H2
H2
G3
F3
F3
F3
E3
B4
B4
A4
A4
A5
A5
A5
A5
A5
A5
A5
A6
B5
B4
B5
B5
B5
B5
B6
B5
B6
B6
B6
B6
B6
B6
C6
C6
C6
C6
B6
B6
B6
B6
B6
B6
B6
B6
A6
A6
A6
F5
F5
F5
F6
F6
F6
F6
H6
H6
G5
E1
F1
G1
G1

GG8
GG8
II5
II5
II6
II6
KK6
KK6
NN3
OO3
NN3
NN3
NN3
BB7
BB7
DD7
BB7
AA7
AA7
BB5
DD7
CC7
CC7
AA7
AA7
AA5
CC7
BB7
BB5
BB5
BB7
CC7
CC7
CC7
CC7
BB7
BB7
AA7
AA7
DD8
DD8
DD8
DD8
CC7
CC7
BB7
BB7
AA7
AA7
CC9
BB9
AA9
BB9
BB9
OO3
OO3
OO3
OO6
OO6
OO6
OO6
OO7
OO7
PP3
GG6
J
KK7
KK7

Model 1493-CGA

CPA4235

CPA4233

A

B
A
A
A
A

B
A
A
A
A
A
A
A

B
A
A
A
A

B
A
A
A
A

B

B
A
A

B
A
A
A

B
A

B
A

B

B
A
A

B

B
A
A

B
A

B
A

B
A
A
A
A

B
A
A
A

B
A

B
A
A

B
A
A
A
A

B
A

B

B
A
A

B
A

B
A

B
AB

ABCDEFGHI J

1717

BB

12V

TC2 GND

+

GND

TC9 iB OFF

16V

ABA

1.21KΩ

15.8K

261

Beam current

Feedback

Beam current

Feedback

Beam current

Feedback

B+G+R=∑

SOCKET BOARD CONNECTOR (TC) 206

TC 6TC 10

0Ω

088

6.8K

099

PN2222

1

2

3

100B

5

0Ω

100A

10

6

1/2

7

LM393

5

+

210

28.0K

077

.01uF

081

1N4937

080

T

U

2.7K

064

258

G

10

396 11

A- BL

+12V

IN

R

G

B5

0Ω

K

243

0 Ω

84.5Ω

218

264

Red Video Amp.

0

Green Video Amp.

Blue Video Amp.

Auto Bias

V

Sync

1

2

3

4

5

6

TC7 Red
TC5 Green
TC 3 Blue

62K

+12
V

098

PN2222

379

200K

CS=.45"

383

Retrace Boost

VERTICAL BLANKING

22K

0Ω

CS=.74

389

384

GND

PN2907A

212

4-7VDC

Hs

4-9Vpp 61,B4

HORIZONTAL

BLANKING

PN2222A (CPQ1322)

1.8K

078

072

GND

FDH400

084

FDH400

086

FDH400

213

16 13

BoRo Go GAINM+ ENA

IN R

R

21 1415 7 8

A5

J

S

1.62K 604Ω 1.21K

260 244 245

+12V

B

BL

Controls XRC5346A

R

0Ω

225

15.8K

223

75Ω

226

7

0Ω

236 235

1N4148

75.0Ω 75.0Ω 75.0Ω

271

278

0Ω

1N4148

270

277

8

0Ω 0Ω 0Ω

281 280 283

75.0Ω

288

9

CPS

RED

GND

1752

VC

292

3

R

VC

4

INPUT

75.0Ω 75.0Ω

286

GND

G

VC

GREEN

5

INPUT

BB

Beam

Current

Buffer

510Ω

006

+12V

6.8K

250
1N4148

253

1

1K

1.8K

248

.047uF

GND

270Ω

093

VIDEO GAIN LINE

1.62K

076

4-7VDC

5-9Vpp

11.5-12.5V

0Ω

228

512

TTL

241

BG

15.8K

242

VC

BLUE

INPUT

CC DD EE FF GG HH II JJ KK LL MM NN OO PPAA

0Ω

8

211

1/2

LM393

210

4

208

207

0VDC

56Vpp 63,D6

Vs

62,B4

GND

IN

A5

L

0Ω

266

276

GND

B

VERTICAL

6

CC DD EE FF GG HH II JJ KK LL MM NN OO PPAA

VIDEO BOARD

ARC PROTECT

Auto

Bright

6.8K

251

2

2.3-

2.7V

1.8K

3

+

368

1.8K

252

Hs

+12V
GND

12V

VC

0

4

R

B

233

15.8K

231

232

1N4148

268

284

V

VC

SYNC

800

2-3VDC

4Vpp 64,C4

4.5-5.3V
5Vpp 16,E5

GND

0Ω

293

s

H

VC

12

CHUNGHWA

M34AFA13X07

CRT

127V TC8

1N4007

090

68.1K

085

100uF

+

089

127K

087

100uF

209

Vs

Vs

+

100uF

267

0Ω

221

PN2222

274

M & N reverse Hs.

1.8K

325

0Ω

328

1.8K

331

s

HORIZONTAL
SYNC

0VDC

Hs

56V

EHT

470Ω

1/2W
465

FOCUS

SCREEN

Beam

4
3

FIL.

2

Current

GND

VERTICAL

DEFLECTION

YOKE

S4

S2

S1

FR205

440

FR205

438

250V

443

HER205 HER205

477

.10Ω

.10Ω

1W
475

Vs

20VDC

15Vpp

37,I6

Min.Max.

H Size

GND

478

1W
476

28,D3

0Ω

524

&

525

CPT1538

12mH

447

YC4

445

1.6KV
441

22nF
630V

437

GND

0Ω

092A

0Ω,

092

TC11

22-28V

V. +12V

+25V

+25V

Hs

.8Vpp 25,F7

0Ω

422

FBP

+43V

FBP

FBP

+25V

0Ω

136A

1770Ω176

Vs

0Ω

196

2.2K.5W

341

+25V

V-

GND

PS FBP

H. S.+12V

V-

GND

+12V

PS FBP

V-

PS FBP

+12V

GND

+

0Ω

Measurements
are taken with
a white screen.

Hs - 5uS/div.
Vs - 2mS/div.

H SIZE

H SIZE

H SIZE

H SIZE

100uF

061

+

VRP

V HYP

I BEAM

V HYP

LTR.No
.

X­Y V

X-Y VDC

WAVEFORM

1N4007

342

100uF

338

200Ω 2W

340

+6V

I BEAM

+6V

.33uF

6V

+6V

No
.

X

TP-REF.Vp-p

VFB

+6V

I BEAM

VFB

082

3.92K

009

I BEAM

.1uF

010

043

12.1K

045

GND

X

X-Y VDC

Sync.

10.0K

10.0K

12.1K

12-18VDC

Hs

Horizontal Drive

2SC
4159

33Vpp 26,E7

337

20

19

100Ω

I11

2,200pF

343

Transformer
CPT1505

2

1

GND

0Ω

466

390Ω, 2W

1,000uF
35V

+

449

0Ω

193

H. S. +12V

022

023

034

62K

011

13

12

GND

15.8K

037

1/4
LM324

12-18VDC

3-5Vpp

421

0Ω

192

RAS. POS.

V

0 TO 7 VDC

+6V

4

510Ω

14

033

11

High Temperature Or

Excessive Beam

Current, Monitor Shut

Down Circuit.

3

1/4

1

LM324

2

033

200K

109

2SC3467

021

200K

005

HORIZONTAL WIDTH CONTROL

10.0K

029

1/4
LM324

033

correction.

7

7

2-3.6Vpp 33,B2

044

44.2K

058

10K

055

10.0K

095

10.0K

031

3.3K

5.6-6.2VDC

Correction

0Ω

194

10K

038

200K

040

097

GND

25V

HS +12V

5

6

.01uF

047

1/2
LM392

H. S. +12V

5

6

Parabolic

Pincushion

Blooming

.01uF

054

8

049

4

LEGEND

BOARD PART No.
PART No. ON PRA.
PRA PIN No.

DC VOLTAGE RANGE,

{

USING A DMM.
USE V. or H. SYNC.

TEST POINT

AC VOLTS

Peak to Peak

ASS. REF.

Measured with scope

Video
Board

800

NO DVM

Hs

.9KVpp

27,G6

2SC5690

31,F5

332

Vs

3

1N4007

4

1.2Ω

12-18VDC

50Vpp

435

434

Vs

29,F6

420

0Ω

191

433

GND

Open

419F

0Ω

451

NC

V-

419B

0Ω

419A

22K

189

4.7Ω

185

4.7Ω

195

+

22K

017

100uF

026

+

100uF

25V

035

0Ω

019

2SA

1371

008

100Ω

1/2W

394

GND

10.0K

051

9

1/4

8

LM324

10

6V

050

Vs

041

3.3K

042

2

1/2
LM392

3

2-2.5VDC

4.4Vpp 39,B3

GND

6.8K

056

28.0K

049

Hs

3.3K

053

-Linear

Pincushion

Correction

5.6-6.2VDC

1-1.7V 34,B2

096

1

3.3nF

057

033

15.8K

030

3.3K

052

1N4937

462

2.7K

060

0Ω

Vs

4-19VDC

27Vpp 36,J7

510Ω

461094

0.8-7VDC

12Vpp 38,J7

HORIZONTAL WIDTH DRIVE

CERONIX

SCALE
:

DRAWN BY:

CERONIX Model 1493-VGA, 1493-SVGA

CERONIX
PART NO.

DATE & REV.

NONE

F. H.

2/18/92

CPA4200, CPA4252

Product safety note: Components marked by the

Horizontal

RC5

TC1

TC4

Vertical

Vertical
Position

RC3

002

Horizontal

+127V

+12V

RC2

1K

062

+16V

+12V

+

100uF

304

12.1K

Hs

329

Vs

Size

Size

Raster

RC

Position

Master

Gain

Remote Control

490

PCB

0Ω

067

OUT IN

7812

GND

296

56pF

1.8K

3

I1

352

10K

481

500Ω

482

1K

483

20K

484

1K

485

0Ω

295

+

When replacing any of these components, be sure to use the parts specified in the parts list.

LA7838

HEAT

Vertical

SINK

378

Deflection

+12V

750Ω

486

+12V

GND

RC4

220uF

298

5.5Vpp

GND

7.3VDC

RC1

01,D6

RC8

RC6

RC7

Hs

510Ω

004

0Ω

203

1,000pF

369

Vs

100uF

+

376

18Ω

367

1N4007

333

0Ω

202

17

220uF

334

+12V

1

2

5

18Ω

+

10uF

014

1N4148

018

14

LM339

355

1.5-2VDC 60,D6

13

LM339

355

318

159

25Ω@25˚C, 2A

Posistor

158

.093" pins

Degaussing

CC2

Connector

162

063

GND

9

+

1/4

8

11

+

1/4

10

200K

.05VDC

246

7V pp 58,C5

PN2222

255

PN2222

100K

257

200K

256

Inrush Current Limit

CPR0434

Black Wire.

CC1

15.8K

020

CPR0432

100kΩ@25˚C

T

180

15.8K

353

1K

357

3.92K

3.92K

356

Vs,Hs

254

33K

247

PC

161

2

270Ω

326

270Ω

330

2.15K

272

412Ω30Ω

273275

GND

M

N

M

N

.14-.16V

+12V

22K

323

4

5
6

7

270Ω

327

1/4

LM339

+

1/4

LM339

+

+127V

FBP
GND

+16V

PN2222A

75Ω

+12V

3

355

12

071

066

CPQ1322

7.15K

366

2

1

355

GND

1K

012

1K

065

+12V

7.15K

364

6.8K

321

6.8K

322

Relay

200V.5A

+24V

470Ω, 1/2W

CC3

MPSA64

D

036

Beam Current
Limiter Circuit.

.047uF

GND

CC

470

468

.093" pin

162A

symbol on this schematic have special characteristics important to safety.

Ramp

Reset

One Shot

377

Tr.

234 567 8 9 1011 12 13

5.5-6.4V
3Vpp 21,D5

93.1K

375

28.0K

402

93.1K

403

+12V
GND

5.5-6.5V

1.2Vpp 19,D5

11-12.4V

20, D5

20 19 18 17 16 14 13

VERTICAL

V+

Horizontal

SYNC INPUT

2.7K

169

I4

12K

7

I2

8.8K22K

I3

GND

H. S. +12V

+6V

I BEAM

out

Ramp

Gen.

V. size

Reset

out

R/C

Vs

or

VERTICAL VERTICAL

± SYNC INPUT

PICTURE

POSITION

8

Hs

IA

I12

Ramp

Slope

Vs

.01uF

374

.1uF

410

VERT.

OSC.

O/S

4Vpp 02,D6

330pF

351

Control

50/60Hz

5-6VDC

1.4Vpp 22,E5

1uF

401

1.2Ω, 1W

385

DELAYED
SYNC O/S

Hs

9

25K

I5 350

6,10

Vert.

Drive

5.5-6.5V

Vs

1.4Vpp

23,F4

Retrace

Booster

Drive

+25V

Vs

470uF

68.1KΩ

393

GND

127K

388

2.2M

365K

362

363

4-6VDC

V

2.8Vpp 18,D5

V. osc.

ADJ.

OSCILLATOR

TR.

7.3-8.7V
4Vpp 03,D6

-.2VDC

Vs 5.5-6.3V

1.5Vpp 04,E6

330pF

11

330pF

45K

1

GND

2.15K

392

1uF

391

127K

361

Vs

VERTICAL

OSC. O/S

SAW TOOTH

GENERATOR

Hs7.3-8.7V

6.8K

I13

I6

100K

173

100K

390

3.3nF

.01uF

414

3.8Vpp 17,E5

1.4Vpp 05,E6

3.3nF

348

62K

167A

FBP

GND

+6V

I BEAM

V+

7-10VDC

61, C2

68.1K

354

2.1-2.4VDC

4.6Vpp 59,D6

3.3nF

358

3A Fuse

146

145

120VAC

230VAC

INPUT

FBP

15.8K

360

Hs

2.2nF

150

FR205

148

2.2nF-230V

FR205

230V

OPEN

152

2.2nF

155

FR205

156

2.2nF-230V

FR205

230V

PC

1

152

151

0Ω

153

154

-1.4V -2.8V

2.33K

J13 J14

91.4K

J1

2SA1371E

1

114A

10.6K

J5

260Ω

J16

130Ω

J15

11K

J2

2

106

62K

220uF

143A

250V

36K

144

143B

220uF

0Ω

250V

114

163

7

8,14

90K

J6

220uF

128

112
0Ω

JD

+2.9V

JC

+1.4V

23.2K

J3

105

101.6K

JBJA

J18

JE

20

4.67K

100K

113

6

6.5-7.5VDC
41,D1

1,000pF

110

3

5

6.5-7.5VDC

88K

J4

4

3.3nF

108

3.4-4.2VDC

56pF

.1-.5VDC

104

9

33.2K

5.7-6.3VDC

J7

3-4VDC
3Vpp

3.3nF

102

-195V

CAUTION! POWER SUPPLY VOLTAGES REFERENCED FROM V-.
SCOPE GND MUST NOT BE CONNECTED TO GND AND V- AT THE SAME TIME.

220uF

250V

175

BZT03-D160

160Vz

181

GND

1

INPUT

AMP.

2

INPUT

3

.5-.8VDC

COMP.

56pF

107

4

Output

FAULT SENSE

5

DELAY

6

Rx
Osc.

47,D2

7

Cx

8

+7.5V

200pF

123

V- V-

Thermal Protection

Vert.
Out

GND

100pF

398

1N4007

382

382

380

1.5-2.7V

Vs

24,E4

24Vpp

4.5-5.3V

Vs

5Vpp 16,E5

15

V Ref.

MULTIPLIER

BIAS

Hs 3-7VDC

0Vpp

06,E6

+

1uF

347

18

1uF

+

H. +12V

I PRA

416

Video V+

+108V

+

100uF

+

120

+101V +115V

1N4937

121

16.3-19VDC

55, E1

16

+15V

15

+17V

ERROR

INPUT

Over

Voltage

14

}

Protect
INPUT

CONTROL &

4uS

COMP.

OUTPUT

Current

SENSE

DRIVE

REF.

XRC5184

115

J PRA PINS:

12
13

+

11

10

9

V-

3,10,15,

Boost

0Ω

395

4.7Ω

396

.1uF

397

22K

370

Vs.1-.3VCD

15.8K

408

GND

LA7851

784523

.2Vpp 07,E6

13

I7 I8

.01uF

100uF

118

1N4937

122

14.8-18VDC

0Ω

132

5.5-6.8VDC

3-5VDC
5Vpp 52,F1

3-6VDC

0.1VDC
1Vpp 51,F1

1-4VDC

12Vpp

50,E2

J PRA

111

&19

Vertical Linearity Circuit

DECREASES

TOP AND
BOTTOM

VERT. SIZE.

D5

200K 200K

PN2222

1N4148

406

GND

.4VDC

.7Vpp 12,E5

X-RAY

PROTECT

HORIZONTAL

OSCILLATOR

Hs2.4-3.4VDC

3.6Vpp 08,E6

14

1K

33K10K

I9

3.3nF

345346344

220uF

50V

182

+127V

1N4937

167

+52V

1N4937

30Ω

139

141

.1uF

124

20

1.00M

17 18

14.7K

J11 J12

MPSA64

2,200pF

131

200K

412

I

411

127K

407

Hs

12

DISCHARGE

Hs3-4VDC

5-6VDC

15

680Ω

9.31K

I10

+ 1600Hz

0Ω

0Ω

198A

+16V

+

1,000uF

171

CPT1536

1
2

8
5

9

12

16

V-

1.00M

134J10

15.8K

510Ω

12

J8

18Ω

133

1N4007

D

127

3.92K

418

5.4-6VDC
11, E5

+

comp.

-

09,E6

7Vpp

H.Fo ADJ.

I16

+800Hz

1,000uF

166

127K

126

38.3K

J9

CPQ1304

13

116

PN2907A

372371

PN2222

1N4148

405

+12V

GND

H. V+

Hs

340Ω

I15

ICID

1N4937

1N4937

GND

10

136

0.33Ω
2W

100pF

129

10.8-12V

11

415

10

170Ω

+400Hz

170

169

6
3
4

1N4937

0Ω

533

3,300pF

125

137

27Vpp 57,F1

200K

413

409

D5

H

INCREASES

TOP AND
BOTTOM

VERT. SIZE.

373

100K

404

10, E6

3.92K

417

17

336

I14

16

IB

I BEAM

+108V

1,000uF

450

168

FR205

142

1N4148

No DVM

300Vpp 40,G1

HEAT
SINK

200pF

1KV

138

47Ω
1/2W, CC

140

V-

TP49, G1

0VDC

FBP

GND

+6V

+

130

135

Fil. Rtn.

Screen

FOCUS

EHT

FLYBACK

TRANSFORMER

10

6

9

8
7

5

1

CPT1516

0Ω

Open

419E

SR

0Ω

188

SL

HORIZONTAL YOKE

446

YC3

107V or 127VDC

120Vpp 250Vpp

H. Linearity

4VDC

20VDC

30Vpp 35,H7

200Vpp

Min.Max.

H Size

CPT1528

Hs

50uH

458

0Ω

454

IRF520

470

460

1/2W

Hs

4/10/96-E1

9/30/96-E4

Fil.

TC12

453

YC1

426

YC2

427

Horizontal Raster Adj.

150Ω 1/2W

425

270Ω

424

510Ω

423

Hs
32,F6
H Size

Min.Max.

470Ω

430

1/2W

428

coil

200pF

432

431

Hs

457

1nF
500V

4VDC

463

11Vpp

Ω

464

2.7uF 100V

456

13350 New Airport Road
Auburn, California 95602

3/24/99-E5
03/06/02-E8

18 18

0

1

2

3

4

5

6

7

8

9

9

ABCDEFGHI J

1

2

3

4

5

7 Pin
Video
Input
Conn.

6

7

002

0Ω, 001

.1uF

010

62K, 011
1K, 012

10uF

A64

+

036

15.8K, 037

039

039

1K,

2.7K,
1K, 065
75Ω, 066

0Ω,067

0Ω, 068

0Ω, 222

15.8K, 15.8K,

75.0Ω,

15.8K,

230

230

0Ω,

0Ω,

293

292

0Ω,

220uF

298

294

7812, 296
0Ω, 295

014

10K, 038

200K, 040

041

3.3K,

043

044

12.1K, 045

.01uF, 047

046

0Ω, 048

062

18Ω, 063

064

0Ω

223 242

224

0Ω,

0Ω, 228

235

236

6
5
4

CPS1752

3
2
1
0

0

+

0Ω, 297

225

226

227

231

232
233
234

291

290

300

070

070

221

071

288

75.0Ω,

100uF

+

061

2222-Mot.

219

220

239

237

287

301

+

100uF

304

Remote Connector

CPS1804

+

016

016

0Ω, 015

10.0K, 051

042

3.3K, 050
LM392

049

072

2222-Mot.

0Ω, 217

0Ω, 218

C5346A

241

240

238

0Ω,

284

285

286

75.0Ω,

75.0Ω,

302

303

1371

008

009

3.92K,

22K, 017

LM324

033

12.1K, 034

3.3K,

.01uF, 054

10K, 055

44.2K, 058

2.7K, 060

.01uF,

081

078

1.8K,

075

075

074

H400, 213

243264

0Ω,

84.5Ω,

266
0Ω,

283

280

281

0Ω,

282

282

0Ω,

311

310

305

4148, 018

15.8K, 020

15.8K, 030

052

3.3K, 053

6.8K, 056

3.3nF,

.33uF

082

080

4937,

28.0K,

1.62K

215
0Ω,

263

262

+

100uF

267

4148, 268
4148, 270
4148, 271

277

278

75.0Ω,

75.0Ω,

312

308

007

0Ω

019

100uF

+

035

510Ω, 021

10.0K, 022

10.0K, 023
0Ω, 032

10.0K, 031

057

077

077

076

206

0Ω, 214

0Ω, 216

244

S

604Ω,

260

1.62K,

15.8K, 261

276

75.0Ω,

313

307

315

100uF

28.0K,096

0Ω, 083

+

100uF

089

H400,084

68.1K, 085

400, 086

12 pin video board connector.

+

100uF

209

212

2907

245

246

1.21K,
200K,

258

257

1.21K,

272

272

100K,

3.92K,

274

273

275

2222

412Ω

30Ω,

319

309

317

0Ω, 314

316

510Ω, 004

003

200K, 005

510Ω,

+

026

10.0K, 029

097

10.0K, 095
0Ω, 094

093

270Ω,

088

0Ω

127K, 087

CPS1757

LM393

0Ω, 211

210

247

247

1.8K, 248

6.8K, 250

33K,

254

2222

256

255

200K,

2222

259

15.8K,

3.3nF,

LM339

355

47nF,318

320

321

6.8k, 322

6.8K,

006

527
024

025

027

028

0Ω, 092

4007, 090

252

252

1.8K,

6.8K, 251

7.15K,

7.15K,

0Ω, 365

2.2M, 363
365K, 362

365K, 362

127K, 361

360

358

1K, 357

356

0Ω. 324

22K, 323

099

6.8K,

205

205

0Ω, 092A

47nF,207

1.0K, 208

4148,253

22K, 370

1.8K, 368

18Ω, 367

366

366
364

1.8K, 325

270Ω, 326

100K, 113

1371

112

JA

105

62K, 098

2N2222

0Ω, 203

0Ω, 204

+

93.1K,
2222

200K, 372
200K, 371

352

56pF

0Ω, 328

270Ω, 327

0Ω, 114A

JB

JC & JD

1nF

110

3.3nF

106

108

56pF
107

56pF
104

103

103

3.3nF,

102

101

10

0Ω, 100A

5

100B

201

0Ω, 200

0Ω, 202

100uF

376

375

373

409

411

200K, 413

200K, 412

.01uF

414

Horizontal Control

IA

354

12.1K, 329

68.1K,

15.8K, 353
4007,333

1.8K, 331

270Ω, 330

381

199

399

1nF, 369

H

2907

351

330pF

339

0Ω, 198A

198

381A

470uF

50V

377

2222

330pF

H. Drive,

529

J PRA, 111

115

C5184

100uF

+

4007, 382

+

LA7838

374.01uF,

28.0K,

93.1K,

100K,
4148, 405
4148, 406

127K,

15.8K, 408

.1uF, 410

CPC1058

LA7851

350

3.3nF

306

CPT1505

349

118

119

348

220uF

18Ω, 133

115A

Power Supply Control

2.2nF
131

A64

127

4007, 116

200K, 109

380

347

334

402

404

404

+

+

1uF

401

403

407

407

415

0Ω, 389

346

332

+

100uF

120

0Ω, 117

0Ω,196

383

200K,

.1uF
397

3.3nF

345

.01uF

250V

335

C4159

100uF

+

IB IC ID

1uF

0Ω, 114

200uF

127K,

124

.1uF

195

4.7Ω,

0Ω, 195A

384A

384

2222379

22K,

100pF,398

0Ω, 395

4.7Ω, 396

1uF
344

336

336

336

337

+

338

+

128

126

126

3.3nF
125

200pF

123

122

4937,

121

4937,

191
0Ω,

0Ω, 194

0Ω, 193

CPM
2028

1.2Ω,1W, 385

378

0Ω

400

393

68.1K

100Ω,.5W,394

3467

420

3.92K, 417

3.92K, 418

+

529A

1.00M, 134

4148, 130

189
22K,

0Ω, 192

188
0Ω,

388

127K,

100K,

392

1uF

391

391

2.15K,

0Ω, 422

0Ω, 419A

0Ω, 419B

390Ω, 2W, 421

416

I PRA

2.2nF,343

4007, 342

2.2K, .5W

200Ω, 2W

132

132

0Ω,
149

47Ω, CC,140

0Ω, 531

.33Ω, 2W, 137

CPQ1304

136

0Ω, 136A

Retighten nut after
wave soldering.

CPM2123, 135

+

1,000uF

0Ω, 190

35V
171

+

387

171A

171A

+

0Ω, 187

1,000uF

35V

449

500

+

390

426 427

Yoke Connector .062" Pins

470Ω

.5W
428

431

341

423

510Ω,

340

424

270Ω,

.5W

430

425

150Ω,

448

0Ω,

446

432

200pF

30Ω,139

200pF, 138

136A

under

heat sink.

4937,

0Ω, 172

185

0Ω, 186

4.7Ω,

1,000uF

+

35V

501

502

508

12mH

CPT1538

447

2SC5690, 433

1.2Ω, 434

129

100pF

Jumper

4937, 170

4937, 169

4937, 168

167

0Ω, 184

450

503

509

445

0Ω, 480

4007, 435

0Ω, 533

CPC1103

220uF, 35V

173

100K,

452

0Ω,

504

510

473

4937, 141

+

183

BZT03, 181

0Ω,

451

451

505

511

514

FR205, 440

CPR
0432

180

506

166

182

507

512

.10Ω,1W

.10Ω,1W

62K, 143A

FR205, 142

36K, 143B

CPT1536

0Ω, 164

0Ω, 165

0Ω, 165A

167A

62K,

+

220uF, 250V

175

.093"
PIN

0Ω, 176

0Ω, 177

0Ω, 178

FBT: Meritron T-8090B, CPT1516

515

444

443

442

441

FR205, 438

.022uF, 630V

437

475

476

HER205

436

HER205

439

0Ω, 525

0Ω, 526

FBT: 453

516

517

477

478

0Ω, 524

0Ω, 454

+

220uF, 250V

144

+

220uF, 250V

163

Black Wire

Degaussing Conn.

161

.093" PINS

12

162A

Blue Wires

3

0Ω, 466

465

.5W, CC

470Ω,

2.7uF, 100V
456

150uH,

CPT1528

457

162

518

Wire Tie, 145A

CPS1753

150

151

FR205,

2.2nF, 152

2.2nF

155

154

2.2nF

153

FR205,

2.2nF,

POSISTOR
CPR0434

120-230V, 14Ω

CPT1511

458
CPA4200

Hf = 31.5kHz
Vf = 50/60Hz

POWER

145

FUSE

FR205, 148

FR205, 156

157

157

158

472

0Ω, 523

522

521

1/2W,CC

4937, 462

510Ω, 461

IRF520

50uH

3A-T

146

147

Wired for;

230VAC, 50-60Hz

CL200, 159

520

468

RELAY

470

470Ω ,

DEGAUSSING

Residual Current

463

1nF

470Ω

.5W

464

460

CPA4252
Hfo = 35.2kHz
Vf = 56Hz

NOTES

VALUE PART No. BD SCH

041 12.1K 1%,1/4W CPR0144 A2 NN7 D
041 15.8K 1%,1/4W CPR0145 A2 NN7 C

1

043

36K 5%,1/4W

043

22.0K 1%,1/4W

22K 5%,1/4W

044

044

44.2K 1%,1/4W

097

62K 5%,1/4W D

097 CPR0146

169K 1%,1/4W C

105

140K 1%,1/4W

7.15K 1%,1/4W

106

8.06K 1%,1/4W

106

232

75.0Ω 1%,1/4W

88.7K 1%,1/4W

232
233

2

3

4.7Ω 5%,1/4W
0Ω JUMPER

233

2.7K 5%,1/4W

336
336

1.21K 1%,1/4W

2.7K 5%,1/4W

356
356 3.92K 1%,1/4W

430

0Ω JUMPER

430

27uH Inductor

431

Linearity Inductor

431

Linearity Inductor

441

7.5nF, 1.6KV

441

5.6nF, 1.6KV

443

.68uF, 250V

443

.47uF, 250V

CRT

M34AFA13X07

V+

106-108V DC.

Hf

31.5kHz

Hf 35.2kHz D

Vf

50/60Hz

Vf

56Hz
Video Board
Video Board

Video

Positive Analog
Power: 230VAC

CPR0017
CPR1063
CPR0015
CPR0154
CPR0018

CPR0172A3D1
CPR0142
CPR0168
CPR0124
CPR0125A5A5
CPR0003
CPR0050A5A5
CPR0012
CPR0134
CPR0012
CPR0140C6C6
CPR0050
CPT1546
CPT1517
CPT1539
CPC1061
CPC1063
CPC1042
CPC1050
CPP1711
107V DC.

CPA4134
CPA4253

0.00-0.70V

4

5

6

7

Model 1493-VGA, CPA4200
Model 1493-SVGA, CPA4252

A3

LL8

A3

LL8

A3

MM7
MM7
MM7

C3
C3 MM7

GG8

D2

GG8

D2

GG8
CC7
CC7DC
CC7
CC7DC

E6

KK4
KK4

E6

FF7
FF7

F6

OO6

F6

OO5

F6

OO6

F6

OO6

H6

PP6

H6

PP6

H6

PP7

H6

PP7

CPA4200

C

D

C

D

C
C

D

C

D
D

C

D

C

D
C
C

D
C

D

D

C

D

C
C

C

D
C

D

D

C
C

D

CPA4252

ABCDEFGHI J

1919

0

1

2

3

4

5

6

7

RED

TC7

GREEN

TC5

BLUE

TC3

QQ

RR SS

Red Video Amplifier

210

+12V

K34

606

K7

Jumper

K33

1.49K

K9

110

3

1.2K

K8

12
14

SOT

NE592

K32

Ω

301

K2

MMBT

3904

Ω

1N4148

3pF

K36

100Ω

1

1.50K

K1

K21

681Ω

K6

1N4148

K35

21K

K22

A

820Ω

K10

Green Video Amplifier

210

+12V

K34

606Ω

K7

Jumper

K33

1.49K

K9

1.2K

K8

1310

SOT

NE592

K32

12
14

301

K2

MMBT

Ω

3904

1N4148

3pF

K36

100Ω

1

1.50K

K1

K21

681Ω

K6

1N4148

K35

21K

K22

A

Ω

820Ω

K10

Blue Video Amplifier

+12V

210

K34

Ω

606

K7

Jumper

K33

1N4148

K36

681Ω

K6

K6

1N4148

K35

3pF

1.49K

K9

1.2K

A

21K

K22

1
3

SOT

NE592

K8

K32

12
14

820Ω

K10

301

K2

MMBT

1

1

1.50K

Ω

3904

100Ω

K21

K1

40.2K

K19

5

9

5

40.2K

K19

5

9

5912

937

40.2K

K19

10

5

5

811

7

8

.1uF

816

5.62K

K11

912

803

7

8

.1uF

816

5.62K

K11

7

8

.1uF

934

5.62K

K11

3

18

12.1K

K15

10

3

300

.5W

4

PN2907A

Ω

33

K20

2.2K

K5 K12

3

18

12.1K

K15

10

3

300

.5W

4

PN2907A

33Ω

K20

2.2K

K5

3

18

12.1K

K15

10

3

300

.5W

4

PN2907A

Ω

33

K20

2.2K

K5 K12

1295

17

K3

K3

8

GND

17

K3

8

GND

17

K3

K3

8

GND

+12V

560

140

Ω

812

560

140

Ω

822

560

140

Ω

945

Ω

K17

Ω

K16

16

.015uF

901

Ω

K17

Ω

K16

16

.015uF

824

K17

Ω

B14

K16

16

.015uF

885

PN2907A

20

2SC

3467

9

11

3.32K

PN2907A

20

2SC

3467

9

11

3.32K

K12

Ω

PN2907A

20

2SC

3467

9

11

3.32K

6

6

6

2SA

1370

19

180

205

2SA

1370

19

180

205

2SA

1370

19

180

205

832

833

K18

834

810

15Ω

827

828

K18

825

805

15

950

951

K18

953

943

15

Ω

Ω

K4

Ω

Ω

Ω

K4

Ω

Ω

Ω

K4

18

Ω

K14

15

1000pF

838

FDH400

840

7

2SA

1370

837

BIAS

GND

+12V

Ω

18

K14

15

1000pF

843

FDH400

841

7

2SA

1370

842

BIAS CONTROL LINE

GND

+12V

Ω

18

K14

15

1000pF

956

FDH400

958

7

2SA

1370

954

BIAS CONTROL LINE

TT UU VV WW

16V

120V

Ω

75

13

K13

14

.1uF

250V
913

7

Dark screen

80-110VDC

1.8K

836

1.8K

831

CONTROL LINE

Ω

75

13

K13

14

.1uF

250V
823

7

Dark screen
80-110VDC

1.8K

844

1.8K

830

75Ω

13

K13

14

.1uF

250V
887

7

Dark screen

80-110VDC

1.8K

955

1.8K

948

126V

9.3V

120V

126V

9.3V

120V

126V

9.3V

16V

957

16V

FDH

+12V

400

835

.1uF

817

FDH

400

899

FDH

C

For
XX92

1.8K

938

3.92K

940

400

845

100K

876

868

+126fV

+16V

+120V
+12V

GND

14

2,200pF
941

15

2,200pF
818

18

2,200pF
815

GND

FDH

400

849

1.8K

10

900Ω

C17

2.74K

C7

1.82K

C4

4K

C10

4K

C11

4K

C14

22K

891

2.7K

884

+9.3V

MPS A64

D

874

-30V

872

11

942

FDH

12

13

8

400

886

FDH400

870

903

5

1/4

LM324

6

13

3

1/4

LM324

2

16

1/4

LM324

19

GND

1N4148

888

.1uF

930

FDH

400

959

GRID PULSE

12Vp-p 95uS

FIL.

1N40071N4007 1N4007

905 906

920

7

12

5K

C9

1

17

5K

C12

14

20

5K

C15

2.2nF

889

1.8K

933

1.8K

931

900

851

883

Vs-23 to -27Vdc

0VDC
56V

31uS

857

C PRA-B

917

Ω

200

C8

68.1K

C3

200

C13

68.1K

C2

Ω

200

C16

68.1K

C1

8.4Vp-p 95uS

1K

890

PN2907A

928

10K 1/2W

873

Hs

1N4007

848

1N4937

847

+120V Source

7

Ω

5

4

1

Vs7.8 to 8.8Vdc

330pF

871

.1uF

907

.1uF

921

.047uF

922

.1uF

923

.047uF

924

.1uF

925

.047uF

926

9 to 10Vdc

9.6Vp-p 95uS

RED

GREEN

BLUE

1uF
50V

846

5.7-

6.3V

1.2-

2.5V

5.7-

6.3V

1.2-

2.5V

5.7-

6.3V

1.2-

2.5V

Vs

.1­.5V

Hs

Vs

SOCKET

8

6

11
12

10

150Ω

1/2W

882

DAG GND

860

1

2

3

4

5

6

7

8

9

10

11

Socket Board

877

G1 G2 Focus

5

97

0Ω

869

853854

1K

1/2W

855

2.2nF

2.2K

1/2W

881

150Ω

100K

FIL.

+127fV

+126V

+16V

18Ω

GND

+4.0V

AUTO BIAS IC

GND Vcc

879

927

.1uF

801

22

CA3224E

input

Blue

sw

normal

comp.

sw in grid pls. pos.

Green input Green

sw

comp.

Red input Red

sw

comp.

6V REF.

Start

COUNTER

FFCLQ

GND

EN
21 H. LINE
COUNTER

CL

DECODER

sw control

GRID

PROGRAM

PULSE

BIAS

5V REF

AUTO

BIAS

ACTIVE

PULSE

Blue

hold

cap.

hold

cap.

hold

cap.

21

20

19

18

17

16

15

14

13

12

ZZ

970

EHT

1/2W

880

1/2W

856878

PCB

YYXX

800

2

1

Green

Wire

961

BEAM OFF ON POWER DOWN.

DAG GND

Fil. GND

30Ω

859

.1uF

816

150

1/2W cc

875

Ω

+127V

+16V
+12V

GND

ABA

1K

Auto Bias Vs

10uF

+

895

2.1-

6.3V

10uF

+

894

2.1-

6.3V

10uF

+

892

2.1-

6.3V

4.6-5.2VDC

4.2Vp-p 360uS

866

33K

908

33K

910

33K

911

Vs2.2 to 2.7Vdc

858

10

9

2SC3675

850

Auto Bright

Circuit

4

1/4

8

LM324

920

11

3.3K

909

Adjust FBT bottom pot
for 4.0V to 4.4 at pin 8.

CERONIX

13350 New Airport Road
Auburn, California 95602

Scale:

Drawn By:

VIDEO BOARD CIRCUIT

NONE

F. H.

DATE & REV.

4/16/96-E1

10/3/96-E4

2/2/98-E5

From Main PCB

971

Pin By Fuse

Pin By FBT

! UNPLUG !
DEGAUSSING
COIL BEFORE
WORKING ON
CHASSIS.

Degaussing
Coil

EHT

Red #1 FOCUS

White #2 FOCUS

SCREEN
TC 9

FIL.

TC 11
TC 12
TC 8
TC 1
TC 4

TC 2

TC 6
TC 10

CABLE

ASS.

62K

852

62K

912

15.8K

914

863

03/06/02-E7

CC1

CC2
CC3

0

1

2

3

4

5

6

7

40 40

QQ RR SS

VVUUTT

WW

YYXX ZZ

GREEN

FIL.

XX93 Video Board, Technician's Assembly Drawing.

View is from component side.

PNMLK

3467

805

2907

822

2.2nF,818
0Ω, 820

Glue

2907

827

828

844

1.8K,

848

4937

∆

+

+

GREEN

0Ω, 804

0Ω, 821

0Ω,826

H400

845

H400

1.0uF

858

858

∆

860

860

803

1
2

3

5
6
7
8

9
10
11

13
14
15

825

16
17

205Ω,

18
19
20

846
847

0Ω, 864

809

.1uF

801

.1uF

250V

823

250V

.015uF

824

GREEN

849

0Ω, 861

0Ω, 862

863

123456712

1

2

3

∆

4

924

47nF

2.2nF, 889

BLUE

882

CRT

SOCKET

FOCUS

WHITE WIRE

100K, 876

"C" PRA 917

922

.1uF

47nF

923

1234567891011

2221201918171615141312

1N4007

+

10uF

895

BLUE

11

12

877

1

877

∆

.1uF

921

.1uF

907

10K, CF

.5W

1.8K, 874

0Ω, 918

LM324

9

8

33K, 911
33K, 910
33K, 908

906

1N4007

FIL.

910

8

FOCUS

RED WIRE

873

920

121110

3.3K, 909

0Ω, 904

905

RED

G2

7

6

5

G1

0Ω, 915

13 14

2.2K

.5W

CF

881

.5W

855

872

872

∆

62K, 912

0Ω, 869

1K

CF

BLUE

0Ω, 936

1

2

3

4

940

941

2.2nF,
A64

942

3467

943

0Ω, 947

0Ω, 946

2907

950

1370

951

1.8K,948

1370

954

958

957

957

H400

∆

Model XX93-E7

Model XX93-E7

Video Board

Video Board

∆

937

937

1

938

939

2

3.92K

1.8K,

3
4
5
6
7

0Ω, 944

8

2907

9

945

10
11

Glue

13
14
15

953

16
17

205Ω,

0Ω, 952

18

955

19
20

1.8K,
1nF, 956

964

H400

959

CERONIX

CERONIX

964

0Ω,

.1uF

930

250V

887

H400

.1uF,

1.8K

1.8K,931

888

0.1uF
1N4148

250V

.015uF

885

886

.093"
Pin

963

2907

928

1K, 890

961

12 45678910111213 14 15 16 17 18 19

935

0Ω
932

+

892

∆

18Ω, 879

880

.5W

150Ω, CC

3

926

.1uF

925

47nF

CA3224E, 927

+

10uF

894

0Ω

893

883

883

150Ω, CC

.5W

2.2nF,878

G2

WIRE

150Ω, CC
.5W

875

934

933

10uF

22K,891

2.7K,884

PCB, 800

20

1234567

15.8K,914

.1uF

250V

913

903

250V

1N4007

.015uF

901

900

900

∆

100K, .5W, CF

∆

868

868

+

+

H400

870

330pF,871

RED

811

1
2
3
4
5
6
7

2907

812

8
9

10

11

13

0Ω, 902

14
15

RED

16

899

17
18
19

H400

20

∆

62K, 852

∆

853

∆

854

0Ω, 867

819

Glue

834

205Ω,

835

851

851

856

3467

810

0Ω, 813

2907

832

1370

833

H400

0Ω,807

2.2nF,815

0Ω, 814

1370

837

1.8K,836
1nF, 838

2SC3675

1K, 866

0Ω, 808

.1uF

817

.1uF

816

1.8K,830

1.8K,831

1370

842

H400

H400

841

840

4007

850

∆

857

857

30Ω, 859

0Ω, 865

0Ω, 802

0Ω, 806

1370

1nF, 843

Note:

Common part values marked on drawing.
The values for components marked with
the ∆ (delta) can be found in the master
part list starting on page 45.

Fil. Rtn.

Filament

+127V

Red Input

Auto Bias Vs

0=Ib,Power Down

PNMLK

+12V

Blue Input

Green Input

Auto Bias Active

123456789101112

+16V

Signal Ground

41

XX93 Video Board, Technician's Assembly Drawing.

View is from conductor side.

PNMLK

1

2

3

4

GREEN

803

1

809

2
3

.1uF

801

5
6
7

.1uF

8

250V

9

823

10
11

250V

.015uF

13
14

824

15
16

GREEN

17
18
19
20

849

H400

1.0uF

846
847

858

858

0Ω, 861

0Ω, 862

860

860

∆

863

1234567 12

0Ω, 864

0Ω, 804

2907

Glue

825

205Ω,

845

4937

∆

0Ω, 802

3467

822

0Ω, 821

0Ω,826

H400

∆

+

+

0Ω, 808

805

0Ω, 820

2907

827
1370

828

1370

844

1.8K,

848

4007

0Ω, 865

0Ω, 806

2.2nF,818

842

1nF, 843

850

30Ω, 859

0Ω,807

.1uF

817

.1uF

816

1.8K,830

1.8K,831

1370

837

H400

H400

841

840

2SC3675

∆

857

857

1K, 866

3467

810

2.2nF,815

2907

0Ω, 814

812

Glue

2907

832

1370

833

1.8K,836
H400

1nF, 838

851
62K, 852

854
100K, .5W, CF

856

0Ω, 867

0Ω, 813

835

853

RED

811

819

834

205Ω,

938

939

1.8K,

0Ω, 944

2907

945

Glue

953

0Ω, 952

205Ω,

1nF, 956

964

3.92K

A64
942

3467

943

2907

950

1370

951

955

1.8K,

H400

959

940

0Ω, 946

1370

954

957

957

∆

941

2.2nF,

0Ω, 947

1.8K,948

958

H400

1

2

3

4

9

8

906

910

8

10K, CF

"C" PRA 917

922

47nF

.1uF

921

1234567891011

.1uF

907

22 21 20 19 18 17 16 15 14 13 12

1N4007

FIL.

11

12

1

.5W

.1uF

923

CA3224E, 927

+

10uF

895

BLUE

877

CRT

SOCKET

877

∆

FOCUS

RED WIRE

100K, 876

924

47nF

2.2nF, 889

BLUE

150Ω, CC

882

WIRE

.1uF

925

G2

150Ω, CC

875

20

1

0Ω, 915

2
3
4
5
6
7
8

9
10
11

13
14
15
16
17
18
19

20

∆

∆

∆

0Ω, 902

RED

∆

868

868

+

+

1234567

15.8K,914

1314

.1uF

903

250V

62K, 912

913

1N4007

250V

.015uF

901

GREEN

899

900

900

870

∆

H400

2.2K

.5W

CF

881

0Ω, 869

1K

.5W

CF

855

330pF,871

H400

920

3.3K, 909

872

872

∆

LM324

12 11 10

33K, 911
33K, 910

33K, 908

0Ω, 904

905

RED

FIL.

G2

7

6

5

G1

RED WIRE

0Ω, 918

1N4007

FOCUS

873

1.8K, 874

3

926

+

10uF

894

893

883

883

.5W

18Ω, 879

PCB, 800

.5W

1245678910111213141516171819

935

47nF

0Ω

932

+

10uF

892

0Ω

∆

2.2nF,878

880

.5W

934

933

150Ω, CC

2907

928

22K,891

.093"
Pin

961

BLUE

0Ω, 936

.1uF,

1.8K

1.8K,931

1K, 890

2.7K,884

∆

937

937

0Ω,

1
2

3
4

.1uF

5

930

6

888

7
8

1N4148

250V

9

0.1uF
10

11

887

13

250V

.015uF

14
15
16

885

17

H400

18
19

886

20

963

CERONIX

CERONIX

Model XX93-E7

Model XX93-E7

Video Board

Video Board

964

PNMLK

123456789101112

+16V

Blue Input

+12V

Green Input

+127V

Signal Ground

Red Input

Auto Bias Active

42

Filament

Auto Bias Vs

Fil. Rtn.

0=Ib,Power Down

Note:

Common part values marked on drawing.
The values for components marked with
the ∆ (delta) can be found in the master
part list starting on page 45.

Safety Critical Components for XX93 Monitors.

PRODUCT SAFETY NOTE:

Components marked by the symbol ! have special characteristics important to safety.
When replacing any of these components, be sure to use the parts specified in the parts
list.
An example of how the critical components are marked in the Master Part List is shown
below. See the Master Part List for specifying critical components.

∆ Bd.# Part No. Bd. Sch. Ref. Description

102 CPC1027 D2 HH8 6,800pF ±5%, 100V, Film!

CAUTION:

CERONIX XX93 Monitors MUST USE AN APPROVED ISOLATION
TRANSFORMER.
The monitor chassis must be connected to earth ground via a common connection
in the system which contains the monitor.

X-RAY NOTE:

X-radiation is produced by electrons colliding with the phosphor and shadow mask at the
front of the picture tube. The X-radiation emanating from the front of the picture tube is
highly reduced due to the shielding affect of the leaded glass face.
It is also produced at the anode bulb contact. The X-radiation emanating from the anode bulb
contact is much higher than from the face due to less shielding.
X-radiation is directly proportional to beam current. It doubles for each 1.3KV increase of
the EHT voltage at the face and also doubles for each 3KV increase of the EHT at the anode
bulb contact.

From this information, it should be noted that when servicing monitor electronics, where the
back of the picture tube is facing the service person, that the beam current should be turned
down to avoid excessive exposure.
Due to the increase in X-Radiation emission with increase of EHT voltage, it is important that
the EHT voltage is checked.
To measure the EHT voltage: Connect the (-) lead of a volt meter to the monitor chassis so
that a reliable connection is made. Connect a high voltage probe to the (+) input of the meter
and at the anode contact of the picture tube.
The EHT should not exceed 26KV at 0 beam current.

43

Sicherheit Kritische Bestandteile für Monitoren XX93.

PRODUKTSICHERHEIT ANMERKUNG:

Bestandteile gekennzeichnet durch das Symbol ! haben Sie die speziellen Eigenschaften,
die zur Sicherheit wichtig sind. Wenn Sie irgendwelche dieser Bestandteile ersetzen, seien
Sie sicher, die Teile zu benutzen, die in der Stückliste spezifiziert werden. Ein Beispiel von,
wie die kritischen Bestandteile in der Vorlagenstückliste gekennzeichnet werden, wird
unten gezeigt. Sehen Sie die Vorlagenstückliste für das Spezifizieren der kritischen
Bestandteile.

∆ Bd. # TeilNr. Bd. Sch. Ref. Beschreibung

102 CPC1027 D2 HH8 6,800pF ±5%, 100V, Film!

VORSICHT:

MONITOREN CERONIX XX93 MÜSSEN EINEN ANERKANNTEN
LOKALISIERUNG TRANSFORMATOR BENUTZEN.
Das Monitorchassis muß an die Masse angeschlossen werden, die über einen
allgemeinen Anschluß im System gerieben wird, das den Monitor enthält.

RöNTGENSTRAHLANMERKUNG:

X-Strahlung wird durch die Elektronen produziert, die mit der Phosphor- und
Schattenschablone an der Frontseite des Abbildung Gefäßes zusammenstoßen. Die
X-Strahlung, die von der Frontseite des Abbildung Gefäßes ausströmt, liegt in hohem Grade
an der Abschirmung beeinflussen vom verbleiten Glasgesicht verringertes. Sie wird auch am
Anode Birne Kontakt produziert. Die X-Strahlung, die vom Anode Birne Kontakt ausströmt,
ist viel höher als vom Gesicht, das zu weniger abschirmen passend ist. X-Strahlung ist direkt
zum Lichtstrahlstrom proportional. Sie verdoppelt für jede Zunahme 1.3KV der
EHT-Spannung am Gesicht und verdoppelt auch für jede Zunahme 3KV des EHT am Anode
Birne Kontakt.

Von diesen Informationen sollte es beachtet werden daß, wenn man Monitorelektronik
instandhält, in der die Rückseite des Abbildung Gefäßes die Service-Person gegenüberstellt, daß
der Lichtstrahlstrom unten gedreht werden sollte, um übermäßige Berührung zu vermeiden.
Wegen der Zunahme der X-Radiationemission mit Zunahme der EHT-Spannung, ist es wichtig,
daß die EHT-Spannung überprüft wird.
Die EHT-Spannung messen: Schließen Sie die (-) Leitung eines Voltmeßinstruments an das
Monitorchassis an, damit eine zuverlässige Beziehung hergestellt wird. Schließen Sie eine
Hochspannungsprüfspitze an den (+) Input des Meßinstruments und am Anode Kontakt des
Abbildung Gefäßes an.
Das EHT sollte nicht 26KV bei 0 Lichtstrahlstrom übersteigen.

44

CERONIX XX93 Monitor Part List 45

r

CPB1614

Main PCB “93” REV. E8

001

CPR0050

A1

J

002

CPS1804

B1

EE2

004

CPR0006

C1

FF1

005

CPR0029

C1

NN5

006

CPD1251

C1

CC1

10mA, 75V Diode, 1N4148

006

CPR0006

C1

CC2

510Ω ±5%, 1/4W, CF

008

CPQ1310

NN5

009

CPR0012

B1

LL7

2.7KΩ ±5%, 1/4W, CF

009

CPR0134

B1

LL7

009

CPR0136

B1

LL7

1.62KΩ ±1%, 1/4W, MF

009

CPR0138

B1

LL7

009

CPR0140

B1

LL7

010

CPC1058

A1

LL7

.1uF ±5%, 50V, Film

011

CPR0018

A1

MM4

012

CPR0009

A1

EE5

014

CPC1101

A2

FF5

015

CPR0050

B2

J

017

CPR0015

B1

NN4

22KΩ ±5%, 1/4W, CF

018

CPD1251

B1

FF5

10mA, 75V Diode, 1N4148

019

CPR0050

C1

NN4

0Ω, Jumper Wire

020

CPR0145

C2

FF5

15.8KΩ ±1%, 1/4W, MF

021

CPR0006

C2

MM3

022

CPR0143

C2

MM3

023

CPR0143

C2

MM4

10.0KΩ ±1%, 1/4W, MF

026

CPC1102

C2

NN4

027

CPR0006

C2

CC2

029

CPR0143

C2

MM5

10.0KΩ ±1%, 1/4W, MF

030

CPR0142

C2

NN7

7.15KΩ ±1%, 1/4W, MF

030

CPR0144

C2

NN7

030

CPR0145

C2

NN7

030

CPR0153

C2

NN7

20.0KΩ ±1%, 1/4W, MF

030

CPR0163

C2

NN7

28.0KΩ ±1%, 1/4W, MF

030

CPR0411

C2

NN7

10K ±20%, 1/5W, White Pot

031

CPR0143

C2

NN5

10.0KΩ ±1%, 1/4W, MF

032

CPR0050

C2J 0Ω, Jumper Wire

033

CPI1405

B2

MM6

034

CPR0144

B2

MM4

12.1KΩ ±1%, 1/4W, MF

035

CPC1102

C1

NN4

036

CPQ1302

A2

FF5

30V, .3A, PNP, D, MPSA64

037

CPR0145

A2

MM4

038

CPR0143

A2

MM6

10.0KΩ ±1%, 1/4W, MF

040

CPR0029

A2

MM6

041

CPR0141

A2

NN7

4.42KΩ ±1%, 1/4W, MF

041

CPR0144

A2

NN7

12.1KΩ ±1%, 1/4W, MF

041

CPR0145

A2

NN7

041

CPR0153

A2

NN7

20.0KΩ ±1%, 1/4W, MF

041

CPR0154

A2

NN7

041

CPR0163

A2

NN7

041

CPR0411

NN7

10K ±20%, 1/5W, White Pot

042

CPR0013

B2

NN7

6.8KΩ ±5%, 1/4W, CF

042

CPR0024

B2

NN7

042

CPR0138

B2

NN7

042

CPR0140

B2

NN7

3.92KΩ ±1%, 1/4W, MF

042

CPR0148

B2

NN7

24.3KΩ ±1%, 1/4W, MF

042

CPR0163

B2

NN7

28.0KΩ ±1%, 1/4W, MF

043

CPR0015

A3

LL8

22KΩ ±5%, 1/4W, CF

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

0Ω, Jumper Wire
8 Cond. Straight Header
510Ω ±5%, 1/4W, CF
200KΩ ±5%, 1/4W, CF

B1

A2

.1A, 300V, PNP, 2SA1371AE

1.21KΩ ±1%, 1/4W, MF

2.15KΩ ±1%, 1/4W, MF

3.92KΩ ±1%, 1/4W, MF

62KΩ ±5%, 1/4W, CF
1KΩ ±5%, 1/4W, CF
10uF, 50V, Electrolytic
0Ω, Jumper Wire

510Ω ±5%, 1/4W, CF

10.0KΩ ±1%, 1/4W, MF

100uF, 25V, Electrolytic
510Ω ±5%, 1/4W, CF

12.1KΩ ±1%, 1/4W, MF

15.8KΩ ±1%, 1/4W, MF

Quad OP Amp IC, LM324

100uF, 25V, Electrolytic

15.8KΩ ±1%, 1/4W, MF

200KΩ ±5%, 1/4W, CF

15.8KΩ ±1%, 1/4W, MF

44.2KΩ ±1%, 1/4W, MF

28.0KΩ ±1%, 1/4W, MF

3.3KΩ ±5%, 1/4W, CF

2.15KΩ ±1%, 1/4W, MF

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UIE

BACDGF H LN R UI
BAC OQDGFH P

BACDGFH
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI

BAC QD

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P

BA

BAC OQDF H PE

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

E
E
E

E
E

E

E
E
E
E
E
E
E
E
E
E
E
E

E

FH NE

G c

E
E
E

E
E
E
E
E

D

CFH NE

G

I

JK
JK
JK
JK

LN R UI

JK

JK
JK

LN R UI

JK

JK
JK

LN R UI
JK
JK

LN R UI
JK
JK

LN R UI
JK
JK

LN R UI
JK
JK
JK
JK
JK

JK

JK

L R UI

JK
JK
JK
JK
JK

LN R UI
JK

LN R UI
JK

LN R UI
JK

LN R UI
JK

LN R UI

JK

L R

L
JK

N

N

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

OQP

OQPLI

R

OQP

O P

OGP

Q

R U

Q

c

c
c
c

c
c

c
c

c
c

U

UI

c
c
c
c

c
c
c
c
c
c
c
c
c
c
c
c

c

c

c
c
c

c
c

c
c
c

c

c
c
c
c
c

c
c
c
c
c
c
c
c
c
c
c
c
c
c

3.15TMS

0.01TMS

0.19TMS

0.01TMS

0.01TMS

0.01T

0.01MS

0.23TMS

0.01

0.01S

0.01T

0.01M

0.01

0.05TMS

0.01TMS

0.01TMS

0.03TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.04TMS

0.01T

0.01TMS

0.01S

0.01M

0.01

0.01

0.01

0.33T

0.01TMS

0.01TMS

0.24TMS

0.01TMS

0.04TMS

0.06TMS

0.01TMS

0.01TMS

0.01TMS

0.01S

0.01

0.01M

0.01

0.01

0.01

0.33T

0.01

0.01T

0.01M

0.01S

0.01

0.01

0.01

CERONIX XX93 Monitor Part List 46

r

043

CPR0016

A3

LL8

043

CPR0017

A3

LL8

043

CPR0018

A3

LL8

62KΩ ±5%, 1/4W, CF

043

CPR0145

A3

LL8

15.8KΩ ±1%, 1/4W, MF

043

CPR0153

LL8

20.0KΩ ±1%, 1/4W, MF

043

CPR0154

A3

LL8

44.2KΩ ±1%, 1/4W, MF

043

CPR0163

A3

LL8

28.0KΩ ±1%, 1/4W, MF

044

CPR0015

A3

MM7

22KΩ ±5%, 1/4W, CF

044

CPR0016

A3

MM7

044

CPR0017

A3

MM7

36KΩ ±5%, 1/4W, CF

044

A3

MM7

62KΩ ±5%, 1/4W, CF

044

CPR0029

A3

MM7

200KΩ ±5%, 1/4W, CF

044

CPR0148

A3

MM7

24.3KΩ ±1%, 1/4W, MF

044

CPR0154

MM7

044

CPR0163

A3

MM7

28.0K ±1%, 1/4W, MF

045

CPR0144

A3

LL8

12.1KΩ ±1%, 1/4W, MF

047

CPC1032

B3

MM8

.01uF ±5%, 50V, Film

048

CPR0050

A3J 0Ω, Jumper Wire

049

CPI1414

B3

MM8

OP Amp / Comp. IC, LM392

050

CPR0024

B3

NN6

3.3KΩ ±5%, 1/4W, CF

051

CPR0143

B2

NN5

10.0KΩ ±1%, 1/4W, MF

052

CPR0024

B2

NN7

052

CPR0138

B2

NN7

2.15KΩ ±1%, 1/4W, MF

052

CPR0140

B2

NN7

3.92KΩ ±1%, 1/4W, MF

052

CPR0148

B2

NN7

24.3KΩ ±1%, 1/4W, MF

052

CPR0153

B2

NN7

20.0KΩ ±1%, 1/4W, MF

053

CPR0024

B3

NN6

3.3KΩ ±5%, 1/4W, CF

054

CPC1032

B3

MM7

.01uF ±5%, 50V, Film

055

CPR0143

B3

MM8

10.0KΩ ±1%, 1/4W, MF

056

CPR0013

B3

NN8

6.8KΩ ±5%, 1/4W, CF

057

CPC1027

B3

NN8

057

CPC1035

B3

NN8

3,300pF ±5%, 100V, Film

058

CPR0154

B3

MM8

060

CPR0012

B3

NN8

2.7KΩ ±5%, 1/4W, CF

061

CPC1102

B3

LL8

062

CPR0009

A3

EE3

1KΩ ±5%, 1/4W, CF

062

CPR0138

A3

EE3

2.15KΩ ±1%, 1/4W, MF

063

CPR0002

A3

FF5

18Ω ±5%, 1/4W, CF

064

CPR0012

A3

BB5

2.7KΩ ±5%, 1/4W, CF

064

CPR0024

A3

BB5

3.3KΩ ±5%, 1/4W, CF

064

CPR0126

A3

BB5

909Ω ±1%, 1/4W, MF

065

CPR0009

A3

EE6

066

CPR0124

A3

EE6

067

CPR0050

A4

EE3

0Ω, Jumper Wire

068

CPR0050

A4J 0Ω, Jumper Wire

071

CPQ1322

B3

EE5

072

CPQ1322

B3

AA4

076

CPR0132

B4

604Ω ±1%, 1/4W, MF

076

CPR0136

B4

1.62KΩ ±1%, 1/4W, MF

077

CPR0163

BB4

28.0KΩ ±1%, 1/4W, MF

CPR0016

B3

BB4

33KΩ ±5%, 1/4W, CF

078

CPR0011

B3

BB4

1.8KΩ ±5%, 1/4W, CF

CPR0012

B3

BB4

2.7KΩ ±5%, 1/4W, CF

078

CPR0136

B3

BB4

1.62KΩ ±1%, 1/4W, MF

078

CPR0138

B3

BB4

080

CPD1253

B3

BB4

1A, 600V, Fast D., 1N4937

081

CPC1027

B3

BB4

6800pf ±5%, 100V, Film

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

33KΩ ±5%, 1/4W, CF G
36KΩ ±5%, 1/4W, CF

A3

33KΩ ±5%, 1/4W, CF

CPR0018

A3

B3

077

078

44.2KΩ ±1%, 1/4W, MF

3.3KΩ ±5%, 1/4W, CF

6,800pF ±5%, 100V, Film

44.2KΩ ±1%, 1/4W, MF

100uF, 25V, Electrolytic

1KΩ ±5%, 1/4W, CF

75.0Ω ±1%, 1/4W, MF

30V, .6A, NPN, PN2222A, Motorola.
30V, .6A, NPN, PN2222A, Motorola.

CC5
CC5

2.15KΩ ±1%, 1/4W, MF

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BA

BA

BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PNE

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BANR U

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAO
BAC OQDGFH PLN R UI

BAO
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAO

BAO
BAC OQDGFH PLN R UI

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

FH R

E

C

K

I

J

J

JK
JK
JK
JK
JK
JK

K
J
JK
JK
JK
JK

JK
JK
JK
JK

JK
JK

JK
JK
JK
JK
JK
JK
JK
JK

JK
JK

N

LN R UI

LN R UI

LN R UI

L

N
LI
LN R UI
LN R UI
LN R UI
LN R UI
LN R UI
LN R UI
LI

D L UI

C R

G

FHI

E

D L

E
E
E
E
E
E

E
E
E
E

COQDGFH PLI

E
E
E
E

CQDNR U

G

FH PLI

E
E

CQD R

G

FH P

E
E
E
E
E
E
E

G

FH P

E

CQDNR
C D

C D

G

FH PLNI

E
E

G c

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

P

ON

Q

O

P

R U

O P

R U

Q

c
c
c
c
c
c
c

U

U

U

c
c
c

c

c
c
c
c

c
c
c
c
c
c

c
c
c
c
c

c
c
c
c

c

c
c
c
c

c

c
c

c
c

c
c
c
c
c
c
c
c

c
c
c
c
c
c

c
c

0.01S

0.01

0.01T

0.01

0.01M

0.01

0.01

0.01

0.01

0.01S

0.01T

0.01

0.01M

0.01

0.01

0.01TMS

0.03TMS

0.01TMS

0.57TMS

0.01TMS

0.01TMS

0.01TM

0.01S

0.01

0.01

0.01

0.01TMS

0.03TMS

0.01TMS

0.01TMS

0.07M

0.08TS

0.01TMS

0.01TMS

0.04TMS

0.01M

0.01TS

0.01TMS

0.01M

0.01

0.01TS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.05TMS

0.05TMS

0.01TS

0.01M

0.01

0.01S

0.01

0.01

0.01

0.01TMS

0.02TMS

0.07

CERONIX XX93 Monitor Part List 47

r

081

CPC1032

B3

BB4

081

CPC1036

B3

BB4

.047uF ±5%, 50V, Film

081

CPC1040

B3

BB4

.015uF ±10%, 250V, Film

081

CPC1054

B3

BB4

.039uF ±5%, 100V, Film

082

CPC1041

B3

LL6

.33uF ±5%, 50V, Film

083

CPR0050

J

0Ω, Jumper Wire

084

CPD1250

C3

AA5

100mA, 200V Diode, FDH400

085

CPR0155

C3

DD1

68.1KΩ ±1%, 1/4W, MF

086

CPD1250

C3

AA5

100mA, 200V Diode, FDH400

087

CPR0157

C3

DD2

088

CPR0050

C3

BB1

0Ω, Jumper Wire

088

CPR0100

C3

BB1

2.2KΩ ±5%, 1/4W, CC

089

CPC1102

C3

DD2

100uF, 25V, Electrolytic

090

CPD1252

C3

DD1

1A, 1KV Diode, 1N4007

092

CPR0050

C3

Jumper Wire

092

CPR0375

C3

PP0

.68Ω ±5%, 1W, MO

CPR0050

C3

Jumper Wire

093

CPR0004

C3

CC4

270Ω ±5%, 1/4W, CF

094

CPR0050

C3

NN8

0Ω, Jumper Wire

095

CPR0143

C3

MM8

10.0KΩ ±1%, 1/4W, MF

096

CPR0163

C3

NN7

28.0KΩ ±1%, 1/4W, MF

097

CPR0016

C3

MM7

33KΩ ±5%, 1/4W, CF

097

CPR0018

C3

MM7

62KΩ ±5%, 1/4W, CF

097

CPR0146

C3

MM7

097

CPR0155

C3

MM7

68.1KΩ ±1%, 1/4W, MF

097

CPR0158

C3

MM7

84.5KΩ ±1%, 1/4W, MF

097

CPR0163

C3

MM7

28.0KΩ ±1%, 1/4W, MF

098

CPR0018

D2

BB1

62KΩ ±5%, 1/4W, CF

099

CPR0013

D2

BB1

6.8KΩ ±5%, 1/4W, CF

099

CPR0018

D2

BB1

62KΩ ±5%, 1/4W, CF

100

CPI1416

D2

CC2

7 Bit Counter, CD4024B

CPR0050

D2

Jumper, pins 5 to 10.

CPQ1303

D3

BB2

30V, .6A, NPN, PN2222A

101

CPC1058

D2

BB2

.1uF ±5%, 50V, Film

!

102

CPC1027

D2

HH8

!

102

CPC1035

D2

HH8

3,300pF ±5%, 100V, Film

104

CPC1000

D2

HH7

56pF ±5%, 100V, Ceramic

105

CPR0017

D2

HH8

36KΩ ±5%, 1/4W, CF

105

CPR0018

D2

GG8

62KΩ ±5%, 1/4W, CF

105

CPR0029

D2

HH8

200KΩ ±5%, 1/4W, CF

105

CPR0142

D1

GG8

7.15KΩ ±1%, 1/4W, MF

105

CPR0143

D2

HH8

10.0KΩ ±1%, 1/4W, MF

105

CPR0153

D2

HH8

20.0KΩ ±1%, 1/4W, MF

105

CPR0155

D1

GG8

68.1KΩ ±1%, 1/4W, MF

105

CPR0163

D2

HH8

28.0KΩ ±1%, 1/4W, MF

105

CPR0168

D1

GG8

8.06KΩ ±1%, 1/4W, MF

105

CPR0172

D1

GG8

140KΩ ±1%, 1/4W, MF

106

CPR0138

D2

GG8

2.15KΩ ±1%, 1/4W, MF

106

CPR0140

D2

GG8

106

CPR0142

D2

GG8

7.15KΩ ±1%, 1/4W, MF

106

D2

GG8

8.06KΩ ±1%, 1/4W, MF

107

CPC1000

D2

HH7

56pF ±5%, 100V, Ceramic

108

CPC1035

D2

HH7

3,300pF ±5%, 100V, Film

109

CPR0029

E2

MM5

200KΩ ±5%, 1/4W, CF

110

CPC1005

D1

HH6

1,000pF ±10%, 500V, Ceramic

!

111

CPR0501

E1

JJ9

112

CPQ1310

D1

HH6

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

.01uF ±5%, 50V, Film

C3

127KΩ ±1%, 1/4W, MF

PP0 0Ω

092A

100A
100B

CPR0168

PP0 0Ω

169KΩ ±1%, 1/4W, MF

BB2 0Ω

6,800pF ±5%, 100V, Film

3.92KΩ ±1%, 1/4W, MF

“J” PRA Power Supply
.1A, 300V, PNP, 2SA1371AE

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BA
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BACDGF H LN R UI

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC QDGF H

BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P

BAQ

BAC OQDGFH PLN R UI
BACDGF H LN R UI

BACDGF H LN R UI
BACDGF H LN R UI

BANR U

BAC OQDGFH PLN R UI

AC OQH P

BDF I
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

COQD PL

N R U

FHI

E

E
E
E
E
E
E
E

E
E
E

E
E
E
E
E

D

C

G

FH

E

E
E

E
E

COQDGFH PLI

E
E

C Q

G

E
E
E
E
E
E
E

JK

JK
JK
JK
JK

LN R UI

JK
JK
JK

JK
JK
JK

L UI

JK

LN R UI

JK
JK

LN R UI

JK
JK

LN R UI

N

JK

LI

JK
JK

JK
JK

JK
JK

K

H

J

I

N

L

N R

K
J
JK
JK
JK
JK
JK
JK

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

OQP

OPN R

OP R U

OQP
OQP

OQP

P

R

c
c

c

c

c
c
c
c
c
c
c

c

c
c
c

c

c
c
c
c
c

c
c
c
c
c
c

c
c

c
c

c
c

c
c

c
c

c
c

c

c
c
c

U

U

c
c
c
c
c
c
c

c
c
c
c
c
c
c

0.03TS

0.04M

0.06

0.06

0.08TMS

0.01TMS

0.02TMS

0.01TMS

0.02TMS

0.01TMS

0.01MS

0.04T

0.04TMS

0.01TMS

0.01

0.02TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01M

0.01

0.01

0.01

0.01

0.01TS

0.01TMS

0.01MS

0.01T

0.32T

0.01MS

0.04MS

0.05T

0.07M

0.08TS

0.01TMS

0.01S

0.01

0.01

0.01

0.01T

0.01

0.01

0.01

0.01M

0.01

0.01T

0.01M

0.01S

0.01

0.01TMS

0.08TMS

0.01TMS

0.01TMS

0.79TMS

0.23TMS

CERONIX XX93 Monitor Part List 48

r

113

CPR0019

D1

HH6

114

CPR0050

HH8

0Ω, Jumper Wire

CPR0050

D1

HH6

0Ω, Jumper Wire

!

115

CPI1403

E2

II7

116

CPD1252

E2

JJ9

1A, 1N4007

117

CPR0050

E3J 0Ω, Jumper Wire

118

CPC1102

E2

II5

119

CPC1104

E3

MM0

120

CPC1102

E2

II5

121

CPD1253

F2

II6

1A, 600V, Fast D., 1N4937

122

CPD1253

F2

II6

1A, 600V, Fast D., 1N4937

123

F2

HH9

330pF ±10%, 500V, Ceramic

123

CPC1006

HH9

200pF ±10%, 1KV, Ceramic

124

CPC1058

E2

JJ7

.1uF ±5%, 50V, Film

!

125

CPC1035

F2

KK7

3,300pF ±5%, 100V, Film

!

126

CPR0156

E2

KK7

93.1KΩ ±1%, 1/4W, MF

!

126

CPR0157

E2

KK7

!

126

CPR0171

E2

KK7

!

126

CPR0172

E2

KK7

140KΩ ±1%, 1/4W, MF

!

126

CPR0174

E2

KK7

210KΩ ±1%, 1/4W, MF

!

126

CPR0176

E2

KK7

226K ±1%, 1/4W, MF

!

CPR0146

E2

KK7

!

CPR0169

E2

KK7

191KΩ ±1%, 1/4W, MF

127

CPQ1302

E2

JJ9

30V, .3A, PNP, D, MPSA64

128

CPC1103

E2

HH9

220uF, 50V, Electrolytic

129

CPC1009

G1

KK9

100pF ±10%, 500V, Ceramic

130

CPD1251

F2

KK7

10mA, 75V Diode, 1N4148

130

CPD1253

F2

KK7

1A, 600V, Fast D., 1N4937

131

CPC1003

E1

JJ9

2,200pF ±20%, 1KV, Ceramic

132

CPD1252

F1

JJ6

1A, 1KV Diode, 1N4007

132

CPR0050

F1

JJ6

0Ω, Jumper Wire

133

CPR0002

E1

JJ8

18Ω ±5%, 1/4W, CF

134

CPR0147

F1

JJ7

135

CPM2037

F2

KK8

Heat Sink For P.S. FET.

135

CPM2123

F2

KK8

Heat Sink For P.S. FET.

!

136

CPQ1304

F2

KK8

CPR0050

F2

KK8

137

CPR0389

F1

KK8

.33Ω ±5%, 2W, MO

138

CPC1006

G1

KK8

200pF ±10%, 1KV, Ceramic

139

CPR0033

G1

JJ6

140

CPR0350

F1

KK8

141

CPD1253

G1

JJ6

1A, 600V, Fast D., 1N4937

!

142

CPD1264

H1

KK6

CPR0018

H1

HH8

62KΩ ±5%, 1/4W, CF

CPR0017

H1

HH8

!

144

CPC1107

I1

GG8

330uF, 250V, Electrolytic

!

144

CPC1111

I1

GG8

220uF, 2=0V, Electrolytic

145

CPS1753

J1

GG9

2 Cond. Right Angle Header

CPM2003

J1

Cable Tie, 4”

!

146

CPR0425

J2

GG9

3 Amp Slow Blo

!

148

CPD1264

J2

GG7

2A, 600V Fast D., FR205-F

149

CPD1255

F1

JJ7

18V, 1W Zener D., 1N4746A

150

CPC1003

J2

GG7

2,200pF ±20%, 1KV, Ceramic

!

151

CPD1264

J2

GG7

2A, 600V Fast D., FR205-F

152

CPC1003

GG7

2,200pF ±20%, 1KV, Ceramic

152

CPR0050

GG8

0Ω Jumper, CS=.40”

153

CPC1003

GG7

2,200pF ±20%, 1KV, Ceramic

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

100KΩ ±5%, 1/4W, CF

E1

114A

PS Control IC, XRC5184

100uF, 25V, Electrolytic
1,000uF, 35V, Electrolytic
100uF, 25V, Electrolytic

CPC1002

F2

127KΩ ±1%, 1/4W, MF
365KΩ ±1%, 1/4W, MF

126.5

126.5

136A

143A
143B

145A

I2
I2
I2

169KΩ ±1%, 1/4W, MF

1.00MΩ ±1%, 1/4W, MF

4.5A, 450V, Mos Fet, 2SK1446LS

22 Gage Buss Wire under P/S

30Ω ±5%, 1/4W, CF
47Ω ±10%, 1/2W, CC

2A, 600V Fast D., FR205-F

36KΩ ±5%, 1/4W, CF

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

AC OQDGFH PLN R UI

AC OQDGFH PLN R UI
AC OQDGFH PLN R UI
AC OQDGFH PLN R UI

BA

BAC OQDGFH PLN R UI
BAC OQDGFH P

BA LN
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN RI

BAC OQDGFH PLN R UI

BAC OQDGF H LI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAC ODGFH PLNI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH PLN R UI

BAO

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

I

JK
JK
JK
JK
JK
JK
JK

JK
JK
JK

JK
JK
JK

J

K
JK
JK
JK
JK

JK

JK
JK
JK

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK

JK
JK
JK
JK
JK

JK
JK
JK

JK

LN R UIE

LN R UI

LN R UI
LN R UI
LN R UI
LN R UI
LN R UIE
LN R UI
LN R UI

LNI
LN R UI
LN R UI
LN R UI
LN R UI

N R U

E
E
E

E
E
E

E
E
E

G

FH

E

COQD PLN R UI

E
E

G

FH

E

COQD P

E
E
E
E

E

E
E
E

E
E
E
E
E
E
E
E

E
E

E
E
E
E
E

E

CQD LI
CQD LI

G

FH PN R U

E

CQD LI

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

R

R

PN R U

Q R U

R

U

U

U

U

c
c
c

c

c
c
c

c

c
c
c

c
c

c
c

c
c
c
c
c
c
c
c

c
c
c
c

c

c

c

c
c
c

c

c
c
c
c
c
c
c
c

c

c
c

c

c
c
c
c
c

c

c

c
c
c
c

0.01TMS

0.01TMS

0.01TMS

3.33TMS

0.01TMS

0.01TMS

0.04TMS

0.22

0.04TMS

0.02TMS

0.02TMS

0.01

0.01TMS

0.05TMS

0.08TMS

0.01

0.01

0.01T

0.01S

0.04

0.01

0.01

0.01M

0.06TMS

0.14TMS

0.01TMS

0.01TMS

0.02

0.02TMS

0.01M

0.01TS

0.01TMS

0.01TMS

0.12

0.16TMS

1.19TMS

0.01TMS

0.03TMS

0.01TMS

0.01TMS

0.06TMS

0.02TMS

0.03TMS

0.01TMS

0.01TMS

1.35TS

0.97M

0.13TMS

0.01TMS

0.32TMS

0.03TMS

0.05M

0.02TMS

0.03TS

0.02TS

0.01M

0.02TS

CERONIX XX93 Monitor Part List 49

r

!

154

CPD1264

J2

GG7

2A, 600V Fast D., FR205-F

155

CPC1003

J2

GG8

2,200pF ±20%, 1KV, Ceramic

!

156

CPD1264

J2

GG9

2A, 600V Fast D., FR205-F

157

CPR0434

J3

FF9

Posistor 230V, 14

158

CPR0434

J3

FF9

Posistor 230V, 14

!

159

CPR0426

J3

FF9

Inrush Current Limit

161

CPS1758

I3

FF9

.093” Dia. Bead Pin, CC1

162

CPS1758

I3

FF9

.093” Dia. Bead Pin, CC2

CPS1758

I3

EE9

.093” Dia. Bead Pin, CC3

!

163

CPC1107

I2

GG8

330uF, 250V, Electrolytic

!

163

CPC1111

I2

GG8

164

CPR0050

H2J 0Ω, Jumper Wire

165

CPR0050

H2J 0Ω, Jumper Wire

CPR0050

H2J 0Ω, Jumper Wire

!

166

CPT1536

H2

KK7

XX93 S. M. Power Inductor

!

166

CPT1552

H2

KK6

!

166

CPT1559

H2

KK6

1793 S. M. Power Inductor

!

166

CPT1562

H2

KK6

14/1993 S. M. Power Inductor

!

166

CPT1563

H2

KK6

XX93 S. M. Power Inductor

!

166

CPT1567

H2

KK6

XX93 S. M. Power Inductor

167

CPD1253

G3

JJ6

1A, 600V, Fast D., 1N4937

CPR0018

H2

II4

62KΩ ±5%, 1/4W, CF

CPR0050

H2

II4

0Ω, Jumper Wire

168

CPD1253

G3

KK6

1A, 600V, Fast D., 1N4937

169

CPD1253

G2

KK5

1A, 600V, Fast D., 1N4937

170

CPD1253

G2

KK5

1A, 600V, Fast D., 1N4937

171

CPC1104

F3

JJ6

CPR0050

J

0Ω, Jumper Wire

172

CPR0050

G3J 0Ω, Jumper Wire

173

CPR0019

G3

HH4

100KΩ ±5%, 1/4W, CF

!

175

CPC1107

H3

II6

330uF, 250V, Electrolytic

!

175

CPC1111

H3

II6

176

CPR0050

H4

LL9

0Ω, Jumper Wire

177

CPR0050

H4

LL9

0Ω, Jumper Wire

178

CPR0050

H4J 0Ω, Jumper Wire

180

CPR0432

G4

GG6

100KΩ @25°C Thermistor

181

CPD1256

G3

HH6

3W, 160V Zener, BZT03-D160

182

CPC1103

G3

JJ5

220uF, 50V, Electrolytic

182

CPC1112

G3

JJ5

220uF, 100V, Electrolytic

183

CPR0050

G3J 0Ω, Jumper Wire

184

CPR0050

G3J 0Ω, Jumper Wire

185

G3

NN3

186

CPR0050

G3J 0Ω, Jumper Wire

187

CPR0050

F4J 0Ω, Jumper Wire

188

CPR0050

F3

OO3

0Ω, Jumper Wire

189

CPR0015

F3

NN3

22KΩ ±5%, 1/4W, CF

190

CPR0050

F3J 0Ω, Jumper Wire

191

CPR0050

F3

NN3

0Ω, Jumper Wire

192

CPR0050

F3

MM3

0Ω, Jumper Wire

193

CPR0050

E3

MM3

0Ω, Jumper Wire

194

CPR0050

E3

MM5

0Ω, Jumper Wire

195

CPR0003

E3

NN3

CPR0050

E3J 0Ω, Jumper Wire

196

E3

II1

1A, 1KV Diode, 1N4007

196

CPR0004

E3

MM0

270Ω ±5%, 1/4W, CS=0.40”

196

CPR0050

E3

LL0

CPR0050

E3

LL0

0Ω, Jumper Wire

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

162A

220uF, 250V, Electrolytic

165A

XX93 S. M. Power Inductor

167A
167A

1,000uF, 35V, Electrolytic

171A

CPR0003

195A

CPD1252

196B

F3

220uF, 250V, Electrolytic

4.7Ω ±5%, 1/4W, CF

4.7Ω ±5%, 1/4W, CF

0Ω, Jumper Wire, CS=0.78”

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

Ω
Ω

A I

AC OQDGFH P

AC OQDGFH P
AC OQDGFH P

AC OQDGFH P

AC OQDGFH PLN R UI

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN RIE

BAC OQDGFH PLNI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

B

BAC OQDGFH P
BAC OQDGFH PL UI

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAC OQDGFH PLNI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BA
BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH P

BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH PLN R UI

BAC QD N

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

CQD LI

E
E

E
E
E
E

E
E
E
E

COQDPN R

G

F

E

E
E

E

E
E

E
E

E
E
E
E
E
E

COQD P U

G

F H

E
E
E
E
E
E
E
E
E
E
E
E
E
E
E

G

F H

E

JK
JK
JK

JK
JK
JK
JK

LN R UI

JK

JK
JK
JK
JK

JK

L

H

JK

L UI

JK

N R

JK
JK
JK
JK

JK
JK

JK
JK
JK
JK
JK
JK

JK

LI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI

JK

LN R UI
JK
JK
JK

LI

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

R

R U

R U

R U

R U

O P

c

c
c

c

c
c
c
c

c
c

c
c
c
c

U

c
c
c
c
c
c

c
c

c

c

c

c
c

c

c
c

c

c
c
c
c
c
c

c

c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c

c
c
c

0.03TS

0.02TMS

0.03TMS

0.51

0.51TMS

0.20TMS

0.02TMS

0.02TMS

0.02TMS

1.35TS

0.97M

0.01TMS

0.01TMS

0.01TMS

3.66TMS

3.99

3.15

2.89

2.89

0.02S

0.01S

0.01TM

0.02TMS

0.02TMS

0.02TMS

0.22TMS

0.01

0.01TMS

0.01TMS

1.35TS

0.97M

0.01TMS

0.01TMS

0.01TMS

0.18TMS

0.22TMS

0.14S

0.33

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01S

0.01

0.01TM

0.01

CERONIX XX93 Monitor Part List 50

r

197

CPQ1307

E3

LL0

197

E3

LL0

0Ω Jumper, 0.600” Long.

198

CPR0033

D3

MM0

CPD1264

D3

JJ5

2A, 600V Fast D., FR205-F

CPR0050

JJ5

0Ω, Jumper Wire

199

CPD1252

D3

LL0

1A, 1KV Diode, 1N4007

200

CPR0050

D3J 0Ω, Jumper Wire

201

CPR0029

D3

BB2

202

CPR0050

D3

FF3

0Ω, Jumper Wire

203

CPR0050

D3

FF1

0Ω, Jumper Wire

204

CPR0050

D3J 0Ω, Jumper Wire

206

CPS1757

C4

CC1

207

CPC1036

D4

CC4

.047uF ±5%, 50V, Film

208

CPR0009

D4

CC3

1KΩ ±5%, 1/4W, CF

209

CPC1102

C4

DD2

210

CPI1410

C4

CC3

Dual Comp. IC, LM393N

211

CPR0050

C4

CC3

0Ω, Jumper Wire

212

CPQ1301

C4

AA3

60V, .6A, PNP, PN2907A

213

CPD1250

B4

AA5

100mA, 200V Diode, FDH400

214

CPR0050

C4J 0Ω, Jumper Wire

215

CPR0050

B4J 0Ω, Jumper Wire

216

CPR0050

B4J 0Ω, Jumper Wire

217

CPR0050

B4J 0Ω, Jumper Wire

218

CPR0050

BB7

0Ω, Jumper Wire

218

CPR0129

B4

340Ω ±1%, 1/4W, MF

221

CPR0050

A4

DD7

0Ω, Jumper Wire

222

CPR0050

A4J 0Ω, Jumper Wire

223

CPR0140

A4

3.92KΩ ±1%, 1/4W, MF

223

CPR0144

A4

BB7

12.1KΩ ±1%, 1/4W, MF

223

CPR0145

A4

BB7

223

CPR0153

A4

BB7

20.0KΩ ±1%, 1/4W, MF

225

CPD1252

A5

AA7

1A, 1KV Diode, 1N4007

225

CPR0000

A5

AA7

2.2Ω ±5%, 1/4W, CF

225

CPR0003

A5

AA7

4.7Ω ±5%, 1/4W, CF

225

CPR0050

A5

AA7

0Ω, Jumper Wire

225

CPR0129

A5

AA7

340Ω ±1%, 1/4W, MF

226

A5

AA7

226

CPR0125

A5

AA7

226

CPR0127

A5

AA7

205Ω ±1%, 1/4W, MF

226

CPR0173

A5

AA7

64.9Ω ±1%, 1/4W, MF

227

CPR0018

A5

BB5

62KΩ ±5%, 1/4W, CF

228

CPR0050

A5

CC5

231

CPR0141

A5

DD7

231

CPR0144

A5

DD7

12.1KΩ ±1%, 1/4W, MF

231

CPR0145

A5

231

CPR0153

A5

DD7

20.0KΩ ±1%, 1/4W, MF

232

CPR0121

A5

CC7

57.6Ω ±1%, 1/4W, MF

232

CPR0122

A5

CC7

232

CPR0124

A5

CC7

75.0Ω ±1%, 1/4W, MF

232

CPR0125

A5

CC7

88.7Ω ±1%, 1/4W, MF

232

CPR0127

A5

CC7

205Ω ±1%, 1/4W, MF

232

CPR0173

A5

CC7

64.9Ω ±1%, 1/4W, MF

232

CPR0175

A5

CC7

69.8Ω ±1%, 1/4W, MF

232

CPR0182

A5

CC7

54.9Ω ±1%, 1/4W, MF

233

CPD1252

A5

CC7

1A, 1KV Diode, 1N4007

233

CPR0000

A5

CC7

2.2Ω ±5%, 1/4W, CF

233

CPR0003

A5

CC7

4.7Ω ±5%, 1/4W, CF

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

1.5A, 180V, NPN, 2SC4159E

CPR0050

30Ω ±5%, 1/4W, CF

198A
198A

CPR0124

D3

200KΩ ±5%, 1/4W, CF

12 Cond. Straight Header

100uF, 25V, Electrolytic

B4

BB7

BB7

15.8KΩ ±1%, 1/4W, MF

75.0Ω ±1%, 1/4W, MF

88.7Ω ±1%, 1/4W, MF

0Ω, Jumper Wire, CS=.30”

4.42KΩ ±1%, 1/4W, MF

DD7 15.8KΩ ±1%, 1/4W, MF

105Ω ±1%, 1/4W, MF

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDGFH PLNI

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

AC OQDGFH PLN R UI

B

AC OQDGFH PN R U

BAC OQDGFH PLN R UI

A

AC OQD P

A R

B

BAC OQDGFH P

A

A D

A D

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

G

F H

E

E

E

E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E

E
E

COQD P

G

FH

E

F H LI

E

G c

COQDGFH P U

E

E

COQD P

G

FH

E

C

G

FH P

E

G

F H

E

JK

JK

JK

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK

JK

JK

JK

JK

JK

JK

LI

LN R UI

LN R UI

LN R UI

LN R UI

N

N

N

LI

LN R UI

N

LI

N

LI

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

R U

R U
R

R U

OQP

R U

R U

R

R

OQ

R U

c

c

c

U

U

U

c

c

c

c

c

c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c

c
c

c

c
c
c
c
c

c

c
c
c
c
c
c
c

c

c
c
c
c
c
c
c
c
c
c
c
c
c

c

c

0.46

0.01TS

0.01

0.03

0.01TMS

0.01

0.01TMS

0.01T

0.01TMS

0.01TMS

0.01TMS

0.25TMS

0.04TMS

0.01TMS

0.04TMS

0.17TMS

0.01TMS

0.04TMS

0.02TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TS

0.01M

0.01TS

0.01TMS

0.01

0.01

0.01TS

0.01

0.01

0.01

0.01

0.01TS

0.01

0.01

0.01

0.01

0.01TS

0.01

0.01TMS

0.01

0.01

0.01TS

0.01

0.01T

0.01

0.01

0.01

0.01

0.01

0.01

0.01S

0.01

0.01

0.01

CERONIX XX93 Monitor Part List 51

r

233

CPR0050

A5

CC7

0Ω, Jumper Wire

233

CPR0129

A5

CC7

340Ω ±1%, 1/4W, MF

235

CPR0050

A5

BB7

0Ω, Jumper Wire

236

CPR0050

A5

AA7

0Ω, Jumper Wire

236

CPR0129

340Ω ±1%, 1/4W, MF

237

CPQ1301

A6

BB7

60V, .6A, PNP, PN2907A

238

CPQ1301

B5

CC7

60V, .6A, PNP, PN2907A

239

CPR0010

B5

AA5

239

CPR0013

B5

AA5

6.8KΩ ±5%, 1/4W, CF

240

CPR0050

B5J 0Ω, Jumper Wire

241

CPI1409

B5

BB6

242

CPR0141

B4

CC6

242

CPR0144

B4

CC7

12.1KΩ ±1%, 1/4W, MF

242

CPR0145

B4

CC7

242

CPR0153

B4

CC7

20.0KΩ ±1%, 1/4W, MF

243

CPD1252

B5

BB7

1A, 1KV Diode, 1N4007

243

CPR0000

B5

BB7

2.2Ω ±5%, 1/4W, MF

243

CPR0003

B5

BB7

4.7Ω ±5%, 1/4W, CF

243

CPR0050

B5

BB7

0Ω, Jumper Wire

243

CPR0129

B5

BB7

340Ω ±1%, 1/4W, MF

244

CPR0122

B5

BB5

105Ω ±1%, 1/4W, MF

244

CPR0132

B5

BB5

604Ω ±1%, 1/4W, MF

245

CPR0132

C5

BB5

604Ω ±1%, 1/4W, MF

245

CPR0134

C5

BB5

1.21KΩ ±1%, 1/4W, MF

246

CPR0009

C5

EE7

246

CPR0029

C5

FF7

200KΩ ±5%, 1/4W, CF

247

CPR0016

C5

FF8

248

CPR0011

C5

CC3

1.8KΩ ±5%, 1/4W, CF

250

CPR0013

C5

CC3

6.8KΩ ±5%, 1/4W, CF

251

CPR0013

C5

CC3

6.8KΩ ±5%, 1/4W, CF

252

CPR0011

C5

CC4

1.8KΩ ±5%, 1/4W, CF

253

CPD1251

D5

CC3

10mA, 75V Diode, 1N4148

254

CPC1036

C5

FF8

.047uF ±5%, 50V, Film

254

CPQ1303

C5

FF8

30V, .6A, NPN, PN2222A

255

CPQ1303

C5

FF7

30V, .6A, NPN, PN2222A

256

CPR0029

C5

FF8

200KΩ ±5%, 1/4W, CF

257

CPR0019

C5

FF8

100KΩ ±5%, 1/4W, CF

CPR0011

C5

FF7

1.8KΩ ±5%, 1/4W, CF

258

CPR0131

C5

BB5

464Ω ±1%, 1/4W, MF

258

CPR0134

C5

BB5

1.21KΩ ±1%, 1/4W, MF

259

CPC1101

C6

FF7

10uF, 50V, Electrolytic

260

CPR0130

C5

BB5

412Ω ±1%, 1/4W, MF

260

CPR0136

C5

BB5

1.62KΩ ±1%, 1/4W, MF

261

CPR0050

B5

BB5

0Ω, Jumper Wire, 0.30” long.

261

CPR0145

B5

BB5

264

CPR0120

B5

BB7

264

CPR0124

B5

BB7

75.0Ω ±1%, 1/4W, MF

264

CPR0127

B5

BB7

205Ω ±1%, 1/4W, MF

264

CPR0152

B5

BB7

84.5Ω ±1%, 1/4W, MF

264

CPR0175

B5

BB7

69.8Ω ±1%, 1/4W, MF

266

CPQ1301

B5

CC7

60V, .6A, PNP, PN2907A

266

CPR0050

B6

, Jumper Wire

266

CPR0128

B5

CC7

267

CPC1102

B5

DD6

268

CPD1251

B6

CC7

10mA, 75V Diode, 1N4148

268

CPD1251

B6

CC7

270

CPD1251

B6

BB7

10mA, 75V Diode, 1N4148

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

A6 AA7

4.7KΩ ±5%, 1/4W, CF c

Video Input IC, XRC5346A

4.42KΩ ±1%, 1/4W, MF

15.8KΩ ±1%, 1/4W, MF

1KΩ ±5%, 1/4W, CF

33KΩ ±5%, 1/4W, CF

257

15.8KΩ ±1%, 1/4W, MF
100 Ω ±1%, 1/4W, MF

CC7 0Ω

301Ω ±1%, 1/4W, MF
100uF, 25V, Electrolytic

1N4148 Diode, Reverse Polarity.

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDGFH PLNI

AC OQDGFH P

B

B

BAC OQDGFH PLN R UIE

A

AC OQD P

BAO

BAO

BAC OQDGFH PLI
BAC OQDGFH PLI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAC OQDGFH PLI
BAC OQDGFH PLI
BAC OQDGFH PLI
BAC OQDGFH PLI

BAO

BAO

B

AC OQDGFH P
A R

AC OQDGFH PLNI

B

BAC OQDGFH PLN R UI
AC OQDGFH PLN R UI

B

AC OQDGFH PLN R UI

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

COQP

N

E
E

COQD P

G

FH

E

G

F H LI

E

G

FH P

CQDNR U

G

FH PLI

E

CQDNR U

E
E
E
E
E
E
E

E
E
E
E

G

FH P

E

CQDNR

G

FH P

E

CQDNR

E

CODGFH P

E

E
E

E

JK
JK

JK

JK

JK

JK

JK
JK
JK
JK
JK
JK
JK

JK
JK
JK
JK

JK

JK

JK

JK

JK

JK
JK

JK

LNI

N

N

LIE

N R U

N R U

N R U

LI

N R

LI

LN R UI

N

LI

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

R U
R U

R U

R U

R U

U
U

U

Q

UE

R

U

c
c

c
c

c
c
c

c
c
c
c
c
c
c
c
c

c

c
c
c
c

c

c
c

c
c
c
c
c
c
c

c

c
c
c
c

c

c

c
c

c

c
c

c

c
c
c
c
c
c

c

c

c
c

c

c

0.01TS

0.01

0.01TMS

0.01TS

0.01M

0.04

0.04

0.01M

0.01

0.01

2.47TMS

0.01

0.01

0.01TS

0.01

0.01

0.01T

0.01

0.01S

0.01

0.01TS

0.01M

0.01TS

0.01M

0.01M

0.01TS

0.01TS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.04M

0.04TS

0.04TS

0.01TS

0.01TS

0.01M

0.01TS

0.01M

0.03M

0.01TS

0.01M

0.01M

0.01TS

0.01

0.01S

0.01

0.01

0.01T

0.04

0.01TS

0.01M

0.04TMS

0.01TS

0.01M

0.01TS

CERONIX XX93 Monitor Part List 52

r

270

CPD1251

B6

BB7

271

CPD1251

B6

AA7

Reverse Polarity.

271

CPD1251

B6

AA7

10mA, 75V Diode, 1N4148

272

CPC1026

C6

DD7

1,000pF ±5%, 100V, Film

272

CPR0138

C5

DD7

272

CPR0140

C5

DD7

273

CPR0130

C6

DD8

273

CPR0136

C6

DD8

1.62KΩ ±1%, 1/4W, MF

273

CPR0147

C6

DD8

CPR0138

C6

DD8

274

CPQ1303

C6

DD7

30V, .6A, NPN, PN2222A

275

CPR0009

C6

DD8

275

CPR0033

C6

DD8

275

C6

DD8

275

CPR0143

C6

DD8

10.0KΩ ±1%, 1/4W, MF

276

CPR0004

B6

CC7

270Ω ±5%, 1/4W, CF

276

CPR0124

B6

CC7

75.0Ω ±1%, 1/4W, MF

276

CPR0128

B6

277

CPR0004

B6

BB7

270Ω ±5%, 1/4W, CF

277

CPR0124

B6

BB7

75.0Ω ±1%, 1/4W, MF

277

CPR0128

B6

BB7

301Ω ±1%, 1/4W, MF

277

CPR0129

B6

BB7

340Ω ±1%, 1/4W, MF

278

CPR0004

B6

AA7

270Ω ±5%, 1/4W, CF

278

CPR0124

B6

AA7

278

CPR0128

B6

AA7

280

CPC1041

B6

BB8

.33uF ±5%, 50V, Film

280

CPR0050

B6

BB8

0Ω, Jumper Wire

281

CPC1041

B6

AA8

.33uF ±5%, 50V, Film

281

CPR0050

B6

AA8

0Ω, Jumper Wire

283

CPC1041

B6

CC8

.33uF ±5%, 50V, Film

283

CPR0050

B6

, Jumper Wire

284

CPR0124

B6

CC9

284

CPR0128

286

CPR0124

B6

BB9

286

CPR0128

288

CPR0124

A6

AA9

288

CPR0128

A6

AA9

292

CPS1752

A6

BB9

292

CPS1781

A6

BB9

293

CPR0050

A6

DD5

0Ω, Jumper Wire

295

CPR0050

A7

EE3

0Ω, Jumper Wire

296

CPI1407

A7

EE3

297

CPR0050

A7J 0Ω, Jumper Wire

298

CPC1103

A7

FF3

220uF, 50V, Electrolytic

303

CPQ1301

B7

EE7

60V, .6A, PNP, PN2907A

304

CPC1102

B7

EE3

305

CPR0012

B7

EE7

2.7KΩ ±5%, 1/4W, CF

307

CPR0004

B7

CC8

270Ω ±5%, 1/4W, CF

308

CPR0004

B7

BB8

270Ω ±5%, 1/4W, CF

309

CPC1036

C6

EE8

.047uF ±5%, 50V, Film

310

CPR0004

B7

BB8

270Ω ±5%, 1/4W, CF

311

CPQ1303

B6

AA8

30V, .6A, NPN, PN2222A

312

CPQ1303

B6

30V, .6A, NPN, PN2222A

313

CPQ1303

C6

CC8

30V, .6A, NPN, PN2222A

314

CPR0050

C7J 0Ω, Jumper Wire

315

CPR0004

C7

DD8

270Ω ±5%, 1/4W, CF

316

CPC1009

C7

EE7

100pF ±10%, 500V, Ceramic

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

1N4148 Diode, Reverse Polarity.
1N4148 Diode,

2.15KΩ ±1%, 1/4W, MF

3.92KΩ ±1%, 1/4W, MF
412Ω ±1%, 1/4W, MF

1.00MΩ ±1%, 1/4W, MF

273

CPR0122

B6 CC9 301Ω ±1%, 1/4W, MF

B6 BB9 301Ω ±1%, 1/4W, MF

2.15KΩ ±1%, 1/4W, MF

1KΩ ±5%, 1/4W, CF
30Ω ±5%, 1/4W, CF
105Ω ±1%, 1/4W, MF

CC7 301Ω ±1%, 1/4W, MF

75.0Ω ±1%, 1/4W, MF
301Ω ±1%, 1/4W, MF

CC8 0Ω

75.0Ω ±1%, 1/4W, MF

75.0Ω ±1%, 1/4W, MF

75.0Ω ±1%, 1/4W, MF
301Ω ±1%, 1/4W, MF
7 Cond. Straight Header
6 Cond. Straight Header

12V, 1A, Regulator, 7812

100uF, 25V, Electrolytic

BB8

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

B

B

AC OQDGFH PLN R UI

BAC OQDGFH PLI
AC OQDGFH PLI

B

BAC OQDGFH PLN R UI

B

AC OQDGFH PLI

AC OQDGFH P

B N

AC OQDGFH PLI

B

AC OQDGFH PLI

B N

BAC OQDGFH PLNI

BAC OQDGFH PLNI

BAC OQDGFH PLNI
AC OQDGFH PLRUI

AC OQDGFH PLRUI

AC OQDGFH PLRUI

AC OQDGFH PLRUI

B N

BAC OQDGFH P

BAC OQDGFH P

BAC OQDGFH P

BAC OQDGFH P

BAC OQDGFH P

BAC OQDGFH P

BAC OQDGFH PLN R UI

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

E

E
E

E

E

E

E

E

E

E

E
E

E

E

E

E
E
E
E
E

E

E

JK

JK
JK

JK

JK

JK

JK

JK

JK

JK

JK
JK

JK

JK

JK

JK
JK
JK
JK
JK

JK

JK

LI

LN R UI
LN R UI
LN R UI
LN R UI
LN R UI

LN R UI

N

N

N

N

N

N

N

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

R

R U

R
R U

R

R U

R U

R U

R U

R

R
R
R
R
R
R U
R U
R U

R U
R U

U

U

U

U

U
U
U
U
U

c
c

c

c
c

c
c

c
c
c

c

c

c

c
c
c

c

c
c

c

c
c
c

c

c
c

c

c

c

c

c
c

c

c

c

c

c

c

c

c
c
c
c
c

c

c

c
c
c
c
c
c
c
c

c

c
c

0.01M

0.01M

0.01TS

0.07

0.01

0.01TMS

0.01TS

0.01

0.01

0.01M

0.04TMS

0.01M

0.01TS

0.01

0.01

0.01

0.01TS

0.01M

0.01

0.01TS

0.01

0.01M

0.01

0.01TS

0.01M

0.08

0.01TMS

0.08

0.01TMS

0.08

0.01TMS

0.01TS

0.01

0.01TS

0.01

0.01TS

0.01

0.18TS

0.16M

0.01TMS

0.01TMS

0.25TMS

0.01TMS

0.14TMS

0.04

0.04TMS

0.01

0.01

0.01

0.04

0.01

0.04

0.04

0.04

0.01TMS

0.01

0.01

CERONIX XX93 Monitor Part List 53

r

317

CPD1251

C7

EE7

10mA, 75V Diode, 1N4148

318

CPC1036

C6

FF8

.047uF ±5%, 50V, Film

318

CPR0050

C6

FF8

0Ω, Jumper Wire

319

CPD1251

C6

EE7

10mA, 75V Diode, 1N4148

320

CPR0012

C7

FF7

2.7KΩ ±5%, 1/4W, CF

321

CPR0013

C7

EE8

6.8KΩ ±5%, 1/4W, CF

322

CPR0013

C7

EE8

6.8KΩ ±5%, 1/4W, CF

323

CPR0015

C7

EE8

22KΩ ±5%, 1/4W, CF

324

CPR0050

C7J 0Ω, Jumper Wire

325

CPR0011

C7

DD8

1.8KΩ ±5%, 1/4W, CF

326

CPR0004

D7

DD8

270Ω ±5%, 1/4W, CF

327

CPR0004

D7

EE9

270Ω ±5%, 1/4W, CF

328

CPR0050

DD9

0Ω, Jumper Wire

329

CPR0144

D6

EE4

12.1KΩ ±1%, 1/4W, MF

330

CPR0004

D7

DD9

270Ω ±5%, 1/4W, CF

331

CPR0011

D7

DD9

1.8KΩ ±5%, 1/4W, CF

!

332

CPT1505

E7

NN1

333

CPD1252

D6

FF3

1A, 1KV Diode, 1N4007

334

CPC1103

E6

FF4

220uF, 50V, Electrolytic

336

CPR0012

E6

KK4

2.7KΩ ±5%, 1/4W, CF

336

CPR0024

E6

KK4

3.3KΩ ±5%, 1/4W, CF

336

CPR0050

E6

KK4

0Ω Jumper Wire

336

CPR0134

E6

KK4

1.21KΩ ±1%, 1/4W, MF

336

CPR0138

E6

KK4

337

CPQ1307

E7

MM1

1.5A, 180V, NPN, 2SC4159E

338

CPC1102

E7

LL1

338

CPC1103

E7

LL1

220uF, 50V, Electrolytic

340

CPR0390

F7

LL1

47Ω ±5%, 2W, MO

340

CPR0391

F7

LL1

340

CPR0398

F7

LL1

100Ω ±5%, 2W, MO

341

CPR0365

F7

LL0

470Ω ±5%, 1/2W, CF

341

CPR0368

F7

LL1

341

CPR0371

F7

LL0

1KΩ ±5%, 1/2W, CF

342

CPD1252

F6

LL1

1A, 1KV Diode, 1N4007

343

CPC1003

F6

MM1

2,200pF ±20%, 1KV, Ceramic

344

CPC1100

E6

II4

!

345

CPC1027

E6

JJ4

!

345

CPC1035

E6

JJ4

3,300pF ±5%, 100V, Film

346

CPC1032

E6

JJ4

.01uF ±5%, 50V, Film

347

CPC1100

E6

II4

348

CPC1035

E6

II4

3,300pF ±5%, 100V, Film

348

CPC1027

E6

II4

350

CPC1025

D6

HH4

330pF ±5%, 50V, Film

351

CPC1025

D6

GG4

330pF ±5%, 50V, Film

351

CPC1026

D6

GG4

1,000pF ±5%, 100V, Film

352

CPC1000

D6

EE4

56pF ±5%, 100V, Ceramic

353

CPR0145

D6

354

CPR0155

D6

GG6

355

CPI1406

C6

FF7

Quad Comparator IC, LM339

356

CPR0012

C6

FF7

2.7KΩ ±5%, 1/4W, CF

356

CPR0140

C6

FF7

3.92KΩ ±1%, 1/4W, MF

357

CPR0009

C6

GG6

357

CPR0050

C6

358

CPC1035

GG7

3,300pF ±5%, 100V, Film

358

CPR0050

C6

GG6

360

CPR0144

C6

GG6

12.1KΩ ±1%, 1/4W, MF

360

CPR0145

C6

GG6

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

BAC OQDGFH PLI

E

JK

N R U

D7

Horizontal Drive Transformer

BAC OQDGFH PLI

BAC OQDGFH PLN R UI

BAC OQDGFH P

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI

BAC OQDGFH P

BAC OQDGFH PLN R UI

BAC OQDGFH P

BAC OQDGFH PLN R UI

BAC OQDGFH P

E
E
E
E
E
E
E
E
E
E
E
E
E
E

CQFPIE

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
J

LN R UI

LN R UI

LN R UI

LN R UI

G

D H L

2.15KΩ ±1%, 1/4W, MF

100uF, 25V, Electrolytic

200Ω ±5%, 2W, MO

2.2KΩ ±5%, 1/2W, CF

1uF , 50V, Electrolytic
6,800pF ±5%, 100V, Film

1uF , 50V, Electrolytic

6,800pF ±5%, 100V, Film

BANR U

BAC OQDGFH PLN R UI

BAC OQDGFH PN R U

BAC OQDGFH PN R U

E
E

E

BAC OQDPN R U

G

FH

E

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI

E
E
E

BANR U

COQDGFH PLI

E

BAC OQDGFH P

BAC OQDGFH P

E
E

COQDGFH P

E

BANR

BAC OQDGFH P

E

COQDGFH P

E

K

JK

JK
JK

JK

JK
JK
JK

JK
JK
JK
JK

JK
JK

LI
LI

LI

LN R UI
LN R UI
LI

LN R UI
LI

BANR

JK

LN R UI

JK

LN R UI

JK

LI

JK

LN R UI

J

K

LN R U

JK

N R U

JK

N R U

J

FF6 15.8KΩ ±1%, 1/4W, MF

68.1KΩ ±1%, 1/4W, MF

1KΩ ±5%, 1/4W, CF

FF6 0Ω, Jumper Wire, CS=.30”

C6

0Ω, Jumper Wire, CS=.40”

15.8KΩ ±1%, 1/4W, MF

BAC OQDGFH P

BAC OQDGFH P

BAC OQDGFH P

BAC OQDGFH P

E
E
E
E

DGFHIE
BAC OQP
BAC OQDGFH PLI

BAC OQDGFH PLI

E

E

BAC OQDGFH PIE

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

R U

R
R U

O

c

c

c

U

c
c

c
c
c
c
c
c
c
c
c
c
c
c
c
c

c
c
c
c
c

c

c
c
c
c
c
c
c
c

c
c
c

c

c
c
c
c

U

c

c
c

U

c

c
c
c
c

c
c

c

c

c

c
c
c

0.01

0.04TS

0.01M

0.01

0.01

0.01TS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.72TMS

0.01TMS

0.14TMS

0.01TS

0.01

0.01

0.01

0.01M

0.46TMS

0.04M

0.14TS

0.04

0.03M

0.04TS

0.01

0.01M

0.01TS

0.01TMS

0.02TMS

0.04TMS

0.07M

0.08TS

0.03TMS

0.04TMS

0.08TS

0.07M

0.06TMS

0.06TS

0.07M

0.01TMS

0.01TMS

0.01TS

0.18TMS

0.01

0.01TMS

0.01TS

0.01M

0.08TS

0.01M

0.01TS

0.01

CERONIX XX93 Monitor Part List 54

r

360

CPR0153

C6

GG6

20.0KΩ ±1%, 1/4W, MF

361

CPR0157

D6

HH2

127KΩ ±1%, 1/4W, MF

362

CPR0171

D6

HH2

362

CPR0180

D6

HH2

309KΩ ±1%, 1/4W, MF

363

CPR0034

D5

HH2

364

CPR0050

D5

EE6

364

CPR0142

D5

EE6

7.15KΩ ±1%, 1/4W, MF

365

CPR0050

C5

J

366

CPR0142

D5

EE6

367

CPR0002

D5

FF3

18Ω ±5%, 1/4W, CF

368

CPR0011

D5

CC3

1.8KΩ ±5%, 1/4W, CF

369

CPC1005

E4

FF1

1,000pF ±10%, 500V, Ceramic

370

CPR0015

D5

JJ2

22KΩ ±5%, 1/4W, CF

371

CPR0029

D5

JJ1

200KΩ ±5%, 1/4W, CF

372

CPR0029

D5

KK1

200KΩ ±5%, 1/4W, CF

373

CPQ1303

D5

KK1

30V, .6A, NPN, PN2222A

374

CPC1032

D5

GG1

.01uF ±5%, 50V, Film

375

CPR0018

D5

GG1

62KΩ ±5%, 1/4W, CF

375

CPR0019

D5

GG1

100KΩ ±5%, 1/4W, CF

375

CPR0157

D5

GG1

375

CPR0156

GG1

93.1KΩ ±1%, 1/4W, MF

376

CPC1102

D4

FF3

!

377

CPA4265

E4

GG0

V. Deflection Boost

!

377

CPI1415

E4

GG0

378

CPM2028

F4

FF0

LA7838 Heat Sink.

378

CPM2028

F4

FF0

LA7838 Heat Sink.

378

CPM2037

F4

FF0

LA7838 Heat Sink.

378

CPM2121

F4

FF0

LA7838 Heat Sink.

378

CPM2122

F4

FF0

LA7838 Heat Sink.

378

CPM2141

F4

FF0

LA7838 Heat Sink.

379

CPQ1303

E4

BB2

30V, .6A, NPN, PN2222A

380

CPC1109

II1

CPC1035

D4

HH1

3,300pF ±5%, 100V, Film

382

CPD1252

E4

II1

1A, 1KV Diode, 1N4007

382

CPR0019

E4

HH1

100KΩ ±5%, 1/4W, CF

382

CPR0158

E4

HH1

84.5KΩ ±1%, 1/4W, MF

383

CPR0029

E4

384

CPR0015

E4

22KΩ ±5%, 1/4W, CF

385

CPR0375

E4

HH2

.68Ω ±5%, 1W, MO

385

CPR0376

E4

HH2

387

CPC1104

KK6

388

CPR0019

F4

HH2

100KΩ ±5%, 1/4W, CF

388

CPR0029

F4

HH2

200KΩ ±1%, 1/4W, CF

388

CPR0157

F4

HH2

389

CPR0050

E4

, Jumper Wire, CS=.74”

390

CPR0019

F4

II1

100KΩ ±5%, 1/4W, CF

390

CPR0157

F4

II1

127KΩ ±1%, 1/4W, MF

391

CPC1043

F5

HH2

391

CPC1101

F5

HH2

10uF, 50V, Electrolytic

392

CPR0011

F5

HH1

1.8KΩ ±5%, 1/4W, CF

392

CPR0012

F5

HH1

2.7KΩ ±5%, 1/4W, CF

392

CPR0138

F5

II1

2.15KΩ ±1%, 1/4W, MF

392

CPR0141

F5

HH1

4.42KΩ ±1%, 1/4W, MF

393

CPR0050

E5

HH1

0Ω, Jumper Wire

393

CPR0155

E5

HH1

68.1KΩ ±1%, 1/4W, MF

393

CPR0158

E5

HH1

84.5KΩ ±1%, 1/4W, MF

394

CPR0364

E5

NN3

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

365KΩ ±1%, 1/4W, MF

2.2MΩ ±5%, 1/4W, CF
0Ω, Jumper Wire

0Ω, Jumper Wire

7.15KΩ ±1%, 1/4W, MF

127KΩ ±1%, 1/4W, MF

5

381A

D5

100uF, 25V, Electrolytic

V. Deflection IC, LA7838

E4

F3

470uF, 50V, Electrolytic

AA2 200KΩ ±5%, 1/4W, CF (CS=.45)
AA2

1.2Ω ±5%, 1W, MO
1,000uF, 35V, Electrolytic

127KΩ ±1%, 1/4W, MF

BB2 0Ω

1uF ±5%, 50V, Film

100Ω ±5%, 1/2W, CF

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDGFH PLN R UI
BAC OQDGF H LN R U

BAC OQDGFH PN R U

BAC OQDGFH PLI
BAC OQDGFH P
BAC OQDGFH PLI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH PLN R UI
BAC OQDGFH P

BACDGFH
BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UIE
BAC OQDPN

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAC OQDPN R U

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BAC OQDGFH P

BAC QDGF H
BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH P

BAOQ

BAC QDGFH N R U

BAC OQDGFH PLN R UI

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

E
E

E

E
E
E
E
E
E
E
E
E
E
E

E
E

G

FH

E

G

FH

E

E
E

G

F H

E

G

F H

E

E
E

E

E
E
E

E

G

FH P

E

C D

E

K
JK
JK

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK

JK

JK

JK
JK
JK
JK

JK

JK
JK

JK

JK
JK
JK

JK

JK

JK

K

L

N R U

LN R UI

LN R UI

LN R UI

LI

LI

LI

LN R UI

LNI
LN R UI
LNI

LNI

LI

N

LI

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

PI

O PLI

R

QN

TS

R U
R U

R
R

O P

R

R
R

O P

c

c
c

c
c
c

c
c
c
c
c
c
c
c
c
c
c

c

U

U
U

U

U
U

c
c
c

c
c

c
c
c
c
c
c
c

c
c
c

c

c

c

c
c

c

c

c
c
c

c
c
c

c

c

c
c

c

c
c
c
c
c
c

0.01

0.01TMS

0.01TMS

0.01

0.01TMS

0.01M

0.01TS

0.01TMS

0.01TS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.04TMS

0.03TMS

0.01

0.01

0.01M

0.01TS

0.04TMS

1.31M

0.28M

0.28

0.12

0.28

0.30

0.68TS

0.04TMS

0.34TMS

0.08S

0.01TM

0.01

0.01S

0.01TMS

0.01TMS

0.02TS

0.02M

0.22

0.01

0.01

0.01TMS

0.01TMS

0.01TMS

0.01

0.16TMS

0.03

0.01

0.01

0.01TS

0.01M

0.01TS

0.01M

0.01

0.01TMS

CERONIX XX93 Monitor Part List 55

r

394

CPR0390

E5

NN3

47Ω ±5%, 2W, MO

394

CPR0397

E5

NN3

33Ω ±5%, 2W, MO

395

CPR0050

E5

II1

396

CPR0003

E5

JJ1

4.7Ω ±5%, 1/4W, CF

397

CPC1037

E5

JJ1

.1uF ±5%, 250V, Film

398

CPC1009

E4

II1

100pF ±10%, 500V, Ceramic

399

CPC1058

D4

LL0

.1uF ±5%, 50V, Film

400

CPR0050

E4

J

401

CPC1043

E5

HH1

402

CPR0017

E5

GG1

36K ±5%, 1/4W, MF

402

CPR0163

E5

GG1

28.0KΩ ±1%, 1/4W, MF

CPR0154

E5

403

CPR0019

E5

GG2

100KΩ ±5%, 1/4W, CF

403

CPR0155

E5

GG2

68.1KΩ ±1%, 1/4W, MF

403

CPR0156

E5

93.1KΩ ±1%, 1/4W, MF

403

CPR0157

E5

GG2

404

CPR0019

E5

KK1

404

CPR0146

E5

KK1

169KΩ ±1%, 1/4W, MF

404

CPR0158

E5

KK1

36KΩ ±5%, 1/4W, CF

CPR0156

E5

KK1

93.1KΩ ±1%, 1/4W, MF

404

CPR0157

E5

KK1

127KΩ ±1%, 1/4W, MF

405

CPD1251

E5

KK1

10mA, 75V Diode, 1N4148

406

CPD1251

E5

JJ1

10mA, 75V Diode, 1N4148

407

CPR0019

E5

JJ1

100KΩ ±5%, 1/4W, CF

407

CPR0146

E5

JJ1

169KΩ ±1%, 1/4W, MF

407

CPR0157

E5

JJ1

127KΩ ±1%, 1/4W, MF

407

CPR0158

E5

JJ1

84.5K ±1%, 1/4W, MF

407

CPR0017

E5

JJ1

407

CPR0155

E5

JJ1

407

CPR0018

E5

JJ1

62KΩ ±5%, 1/4W, CF

407

CPR0154

E5

JJ1

408

CPR0145

E5

JJ3

409

CPQ1301

D5

KK0

60V, .6A, PNP, PN2907A

410

CPC1058

E5

411

CPQ1303

D5

JJ1

30V, .6A, NPN, PN2222A

412

CPR0029

D5

JJ0

200KΩ ±5%, 1/4W, CF

413

CPR0029

D5

KK0

200KΩ ±5%, 1/4W, CF

414

CPC1032

D6

.01uF ±5%, 50V, Film

414

CPC1035

D6

II2

3,300pF ±5%, 100V, Film

!

415

CPI1400

E6

KK3

H. Control IC, LA7851

!

416

CPR0502

E6

II4

“I” PRA Horizontal Control

417

CPR0140

E5

KK3

418

CPR0140

E5

KK2

CPR0050

F5

OO2

CPR0050

F6

OO2

CPR0050

F5

OO2

CPR0050

F5

NN2

420

CPQ1307

E5

NN3

1.5A, 180V, NPN, 2SC4159E

420

CPQ1308

E5

NN3

421

CPR0393

F6

MM2

422

CPR0050

F5

KK1

423

CPR0006

F5

510Ω ±5%, 1/4W, CF

424

CPR0004

F5

270Ω ±5%, 1/4W, CF

425

CPR0367

F5

150Ω ±5%, 1/2W, CF

425

CPR0379

F5

OO3

68Ω ±5%, 1W, MO

426

CPS1758

F5

OO2

.093” Dia. Bead Pin, YC1

426

CPS1759

F5

OO2

.062” Dia. Bead Pin, YC1

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

E

J

402.5

0Ω, Jumper Wire

0Ω, Jumper Wire
1uF ±5%, 50V, Film

GG1 44.2KΩ ±1%, 1/4W, MF

BAC OQDGFH PLN R UI
BAC OQDGFH P

E
E

BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UI

BAC OQDGFH P
BAC OQDGFH PLN R UI

BACDGF H LI

E

E
E

E

JK
JK
JK
JK

JK
JK

JK

LN R UI

LN R UI

BA L

JK

GG2

CDGFH R

E

127KΩ ±1%, 1/4W, MF

404.5

100KΩ ±5%, 1/4W, CF

CD I

BA H

.5

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

E
E

J

K

L

JK
JK

K

C D

BA

.5
.5

419A
419B
419E
419F

36KΩ ±5%, 1/4W, CF

68.1KΩ ±1%, 1/4W, MF

44.2KΩ ±1%, 1/4W, MF

15.8KΩ ±1%, 1/4W, MF

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

GG2 .1uF ±5%, 50V, Film

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

II2

BAOQPN R U

BAC OQDGFH P
BAC OQDGFH P

3.92KΩ ±1%, 1/4W, MF

3.92KΩ ±1%, 1/4W, MF
0Ω, Jumper, Normal Vertical.
0Ω, Jumper, Normal Vertical.

BAC OQDGFH P
BAC OQDGFH P

BAC OQDF PNRU
BAC OQDF PNRU

0Ω, Jumper, Reverse Vertical. G
0Ω, Jumper, Reverse Vertical. G

.1A, 200V, NPN, 2SC3467AE
390Ω ±5%, 2W, MO

0Ω, Jumper Wire
OO3
OO3
OO3

BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH P
AC OQDGFH PLN R UI
AC OQDGFH PLN R UI
AC OQDGFH PN R UI

E
E
E
E
E
E

CDGF H

E
E

E
E

E
E
E

E
E
E
E

J

I

N
JK
JK
JK
JK
JK
JK

JK

LI

JK

LN R UI

JK

LN R UIE

JK

LN R UI

JK

LN R UI
J
J

K

H
H

LI

K

LI
J

K

LN R UI
JK

LN R UIE
JK

LN R UI
JK
JK
JK

L

G

F H

E

JK

LI

BAC OQDPN R U

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

R U

OQPN R U

OPI

QN

R

OH PL

Q

R U

c

c
c
c

c

c

c

c
c

c

c

c
c
c

U

c
c
c
c
c
c

U

c

c
c

c
c
c
c
c
c
c
c

c
c
c
c
c
c

c

c
c

c

c
c

c
c

c
c
c

c
c

c
c
c
c

c

c

c

0.04

0.03

0.01TMS

0.01TMS

0.07TMS

0.01TMS

0.05

0.01TMS

0.16TMS

0.01T

0.01S

0.01M

0.01

0.01T

0.01S

0.01M

0.01

0.01

0.01T

0.01S

0.01

0.01TMS

0.01TMS

0.01

0.01

0.01

0.01

0.01T

0.01

0.01S

0.01M

0.01TMS

0.04TMS

0.05TMS

0.04TMS

0.01TMS

0.01TMS

0.03TM

0.08S

1.59TMS

0.79TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01

0.01

0.46

0.18TMS

0.03TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.03

0.02TS

0.01M

CERONIX XX93 Monitor Part List 56

r

427

CPS1758

F5

OO2

.093” Dia. Bead Pin, YC2

427

CPS1759

F5

OO2

.062” Dia. Bead Pin, YC2

428

CPR0365

F6

OO6

470Ω ±5%, 1/2W, CF

428

CPR0367

F6

OO6

CPR0371

F6

OO6

1KΩ ±5%, 1/2W, CF

430

CPR0050

F6

OO6

430

CPT1506

F6

H. Linearity Inductor

430

CPT1539

F6

OO6

H. Linearity Inductor

430

CPT1546

F6

430

CPT1557

F6

OO6

H. Linearity Inductor

430

CPT1557

F6

OO5

H. Linearity Inductor (-3T)

430

CPT1566

F6

OO6

H. Linearity Inductor

430

CPT1569

F6

OO5

H. Linearity Inductor

431

CPT1506

F6

H. Linearity Inductor

431

CPT1517

F6

H. Linearity Inductor

431

CPT1539

F6

OO6

H. Linearity Inductor

431

CPT1557

F6

OO6

H. Linearity Inductor

431

CPT1557

F6

H. Linearity Inductor

431

CPT1565

F6

OO6

H. Linearity Inductor

431

CPT1566

F6

OO6

H. Linearity Inductor

431

CPT1569

F6

OO6

H. Linearity Inductor

432

CPC1002

G6

OO6

330pF ±10%, 500V, Ceramic

432

CPC1006

F6

200pF ±10%, 1KV, Ceramic

432

CPC1026

G6

1,000pF ±5%, 100V, Film

!

433

CPQ1305

G7

NN1

5A,1.5KV, NPN, 2SD1651

!

433

CPQ1318

G7

NN1

12A,1.5KV, NPN, 2SC5690

434

CPR0376

G7

NN1

435

CPD1252

G7

NN1

1A, 1KV Diode, 1N4007

436

CPD1272

H7

PP7

6A, 1KV, Fast D., HER605

!

437

CPC1034

H7

.022uF ±3%, 630V, Film

!

437

CPC1047

H7

.027uF ±3%, 800V, Film

!

437

CPC1076

H7

PP7

0.1uF ±5%, 200V, Film

438

CPD1264

H6

PP6

2A, 600V Fast D., FR205-F

!

439

CPC1034

H7

.022uF ±5%, 630V, Film

!

439

CPC1047

H7

PP7

.027uF ±3%, 800V, Film

440

CPD1259

H6

PP6

3A, 1KV Fast Diode, TF307

440

CPD1264

G6

PP6

2A, 600V Fast D., FR205-F

440

CPD1270

H6

PP6

6A, 800V Fast Diode, TF606

440

CPD1270

H6

PP6

6A, 800V Fast Diode, TF606

440

CPD1271

H6

PP6

6A, 1KV Fast Diode, TF607

440

CPD1271

H6

PP6

6A, 1KV Fast Diode, TF607

!

441

CPC1030

H6

.01uF ±3%, 1.6KV, Film

!

441

CPC1051

H6

.012uF ±3%, 1.6KV, Film

!

441

CPC1055

H6

8,200pF ±3%, 1.6KV, Film

441

CPC1057

H6

PP6

1,000pF ±3%, 1.6KV, Film

!

441

CPC1061

H6

7,500pF ±3%, 1.6KV, Film

!

441

CPC1063

H6

PP6

5,600pF ±3%, 1.6KV, Film

!

441

CPC1065

H6

PP6

6,800pF ±5%, 1.6KV, Film

!

441

CPC1075

H6

PP6

.033uF ±3%, 800V, Film

!

441

CPC1077

H6

PP6

1,500pF ±3%, 1.6KV, Film

!

442

CPC1030

H6

.01uF ±3%, 1.6KV, Film

!

442

CPC1047

H6

PP6

.027uF ±3%, 800V, Film

!

442

CPC1051

H6

12,000pF ±3%, 1.6KV, Film

!

442

CPC1055

H6

8,200pF ±3%, 1.6KV, Film

!

442

CPC1057

H6

1,000pF ±3%, 1.6KV, Film

!

442

CPC1061

H6

PP6

7,500pF ±3%, 1.6KV, Film

!

443

CPC1042

H6

PP7

.68uF ±5%, 250V, Film

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

150Ω ±5%, 1/2W, CF

428

0Ω, Jumper Wire

OO5

OO5 27uH Inductor

OO6
OO6

OO6

OO6
OO6

1.2Ω ±5%, 1W, MO

PP7
PP7

PP7

PP6
PP6
PP6

PP6

PP6

PP6
PP6
PP6

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDPN R U
BAC OD

BQDGFH R U

A

BD R

AC Q

BA
BA

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

BA
BAC OQDPN R U

BAC OQDPN R U

BA

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

G

F H

E

G

E

E

C

E

G c

COQDGFH PLN R UI

E

COQDGFH PLN R UI

E
E
E

CQDF H PLN R UI

E

G

FH

E

G c

F

E

G

C Q

D

G c

C

JK

LI

JK

N

K

N

J

I

L

N

JK

I

L

JK

JK
JK
JK
JK

LI

JK

K

LN R U
J

I

JK

LI

K

N

J

I

J

LI

K

H

K

N

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

PL

QFH R

O P

OFH P

TS

O

R

OH

P

R

c

c
c

UI

U

U

U

c

c

c

c
c
c
c
c
c
c
c
c
c
c
c

c
c
c

c

c
c

c
c
c

c

c

c
c
c
c
c
c
c
c
c

c
c
c
c
c
c
c
c
c
c
c
c
c

c
c
c

0.02TS

0.01M

0.01

0.01TS

0.01M

0.01S

0.74M

0.61

0.76

0.77

0.77T

0.63

0.74M

0.77

0.61

0.77T

0.77S

0.60

0.63

0.01S

0.01TM

0.07

1.40

3.45TMS

0.02TMS

0.01TMS

0.08M

0.46

0.28

0.03M

0.08TM

0.46S

0.12

0.03M

0.39T

0.39T

0.39S

0.39S

0.24

0.32

0.39

0.24M

0.31

0.35

0.33

0.46

0.30T

0.24

0.46

0.32MS

0.39

0.24

0.31T

0.55

CERONIX XX93 Monitor Part List 57

r

!

443

CPC1050

H6

.47uF ±5%, 250V, Film

!

443

CPC1056

H6

PP7

.39uF ±5%, 250V, Film

!

443

CPC1059

H6

PP7

.33uF ±5%, 250V, Film

!

443

CPC1062

H6

PP7

.56uF ±5%, 250V, Film

!

443

CPC1069

H6

PP7

1.5uF ±5%, 400V, Film

!

443

CPC1078

H6

PP7

1.6uF ±5%, 250V, Film

!

444

CPC1042

H6

OO7

.68uF ±5%, 250V, Film

!

444

CPC1050

H6

PP7

.47uF ±5%, 250V, Film

!

444

CPC1050

H6

OO7

.47uF ±5%, 250V, Film

!

444

CPC1059

H6

PP7

.33uF ±5%, 250V, Film

!

444

CPC1062

H6

PP7

.56uF ±5%, 250V, Film

!

444

CPC1069

H6

OO7

1.5uF ±5%, 400V, Film

445

CPS1758

G5

PP5

.093” Dia. Bead Pin, YC4

445

CPS1759

G5

PP5

.062” Dia. Bead Pin, YC4

446

CPS1758

G5

OO5

.093” Dia. Bead Pin, YC3

446

CPS1759

G5

.062” Dia. Bead Pin, YC3

447

CPT1538

G5

448

CPC1104

F4

MM2

449

CPC1104

F4

MM2

449

CPC1113

F4

MM2

2,200uF, 25V, Electrolytic

450

CPC1104

KK6

451

CPR0050

G4

NN1

452

CPR0050

G4

NN1

!

453

CPT1516

H5

!

453

CPT1544

H5

!

453

CPT1555

H5

OO2

!

453

CPT1558

H5

OO2

!

453

CPT1561

H5

OO2

!

453

CPT1568

H5

OO2

454

CPR0050

I6

456

CPC1044

I6

OO8

2.7uF ±10%, 100V, Film

456

CPC1064

I6

OO8

6.8uF ±5%, 100V, Film

457

CPT1504

I7

457

CPT1528

I7

457

CPT1560

I7

OO7

100uH Horz. Width Inductor

457

CPT1564

I7

OO7

70uH Horz. Width Inductor

458

CPT1511

J7

50uH Control Inductor

460

CPQ1315

J6

461

CPR0006

J6

NN8

462

CPD1253

J6

1A, 600V, Fast D., 1N4937

463

CPC1005

J6

1,000pF ±10%, 500V, Ceramic

464

CPR0365

J6

465

CPR0050

I6

PP1

0Ω Jumper Wire

465

CPR0352

470Ω ±10%, 1/2W, CC

466

CPR0050

I6

, Jumper Wire

468

CPR0433

J5

EE9

24V coil, 200V @ .5A Relay

470

CPR0352

J6

EE9

470Ω ±10%, 1/2W, CC

473

CPR0050

G6J 0Ω, Jumper Wire

475

CPR0374

H7

PP7

.10Ω ±5%, 1W, MO

476

CPR0374

H7

PP7

.10Ω ±5%, 1W, MO

477

CPD1266

H7

478

CPD1266

H7

480

CPR0050

G7J 0Ω, Jumper Wire

500

CPC1041

F4

NN4

.33uF ±5%, 50V, Film

501

CPR0009

G4

NN4

502

CPR0050

G4

NN5

503

CPR0017

G4

OO4

36K ±5%, 1/4W, MF

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

PP7

OO5

PP3 12 mH, H. Raster Shift Inductor

1,000uF, 35V, Electrolytic
1,000uF, 35V, Electrolytic

G4

I6 PP1

1,000uF, 35V, Electrolytic
0Ω, Jumper Wire
0Ω, Jumper Wire

31KHz, .75mA, FBT Meritron T-8090B

OO2
OO2 15KHz, 1.5mA, FBT Meritron CT-8227

31KHz, .45mA, FBT Meritron CT-8819 G
15KHz, FBT Hitachi BW02651
31KHz, FBT Meritron CT-8943
31KHz, FBT Meritron c

OO7 0Ω, Jumper Wire

OO7 750uH Horz. Width Inductor
OO7 150uH Horz. Width Inductor

OO7
OO8 8A, 100V, Mos Fet, IRF520

510Ω ±5%, 1/4W, CF
NN7
OO8
OO8 470Ω ±5%, 1/2W, CF

MM2 0Ω

PP7 2A, 400V, Fast D., HER205
PP7 2A, 400V, Fast D., HER205

1KΩ ±5%, 1/4W, CF G

0Ω, Jumper Wire G

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BA

A L

B

BAC OQDPN R U

BAC OQDPN R U

AC OQDGFH P

BAC OQDGFH P

BAC OQDGFH P

BA

BA

BAC OQDGFH PLN R UI

BA R U

BAC OQD P

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P

BAC OQDPN R
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH PN R
BAC OQDGFH PN R
BAC OQDGFH PN R
BAC OQDGFH PN R U
BAC OQDGFH PLN R UI

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

DF H PL

E

G c

N

J

I

K

G

FHE

G

F H

E

G

F H

E

E

E

E

COQD

G

FH PLN R UI

E

COQD P

FH

E

E

COQDGFH PLNI

E

FH

E

G

E
E
E
E
E
E

G

F H

E

E
E

G

F H

E

E
E
E

G

F H

E

F H

E

F H

E

JK

JK

JK

JK

JK

JK

JK

JK
JK

JK
JK
JK
JK
JK
JK
JK
JK

JK
JK
JK
JK

JK
JK
JK
JK

LI

LI

LN R UI

LN R UI

LN R UI

N R U

LI

N R U

LI

LN R UI
LN R UI
LN R UI
LN R UI
LI

LN R UI
LN RI
LN RIE
LI

M
M

LI
LI
LI

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

O Q

R

O P

T

c

c
c
c
c
c
c
c
c

U

U

UE
UE
U

c
c

c

c

c

c

c

c

c
c
c

c

c

c
c
c
c
c

c
c

c
c
c
c
c

c
c
c
c
c
c
c

c

c
c

c

c

c
c
c
c

c
c
c
c

c

0.31

0.45

0.37M

0.50

0.79

0.68

0.55

0.31

0.31

0.37T

0.50S

0.79

0.02TS

0.01M

0.02TS

0.01M

0.74TMS

0.22S

0.22MS

0.22TMS

0.01S

0.01TM

12.78S

14.18M

13.13

12.78

13.13

13.13T

0.01TMS

0.37TMS

1.16

0.76M

0.74

0.75TS

0.58

0.70TMS

0.41TMS

0.01TMS

0.02TMS

0.01TMS

0.01TMS

0.01

0.06TMS

0.01TMS

0.83TMS

0.06TMS

0.01T

0.07M

0.07M

0.01TMS

0.08T

0.01T

0.01T

0.01T

CERONIX XX93 Monitor Part List 58

r

CPR0151

G4

OO4

73.2KΩ ±1%, 1/4W, MF

503

CPR0158

G4

OO4

84.5KΩ ±1%, 1/4W, MF

504

CPR0147

G4

OO4

505

CPR0017

G4

OO4

36KΩ ±5%, 1/4W, MF

505

CPR0018

G4

OO4

62KΩ ±5%, 1/4W, CF

505

CPR0145

G4

OO4

15.8KΩ ±1%, 1/4W, MF

507

CPC1003

G4

PP3

2,200pF ±20%, 1KV, Ceramic

507

CPC1057

G4

PP3

1,000pF ±3%, 1.6KV, Film

508

CPR0050

G5J 0Ω, Jumper Wire

509

CPQ1308

G4

OO4

510

CPR0034

G5

OO4

511

CPR0034

G5

OO4

512

CPD1252

G5

PP4

1A, 1KV Diode, 1N4007

512

CPD12XX

G5

PP4

6A, 1,200V, BYD33U Diode

514

CPR0029

G5

OO4

200KΩ ±5%, 1/4W, CF

515

CPC1002

H5

PP4

330pF ±10%, 500V, Ceramic

515

CPC1005

H5

PP4

1,000pF ±10%, 500V, Ceramic

516

CPR0004

H6

OO6

270Ω ±5%, 1/4W, CF

517

CPC1037

H6

OO5

.1uF ±5%, 250V, Film

517

CPC1068

H6

OO5

.01uF ±5%, 400V, Film

518

CPT1556

I6

PP4

Dynamic Focus Transformer

520

CPR0352

J5

PP1

470Ω ±10%, 1/2W, CC

521

CPR0050

J4J 0Ω, Jumper Wire

522

CPR0050

J4J 0Ω, Jumper Wire

523

CPR0050

J4J 0Ω, Jumper Wire

524

CPR0050

H4

PP2

0Ω, Jumper Wire

525

CPR0050

H4

PP2

0Ω, Jumper Wire

526

CPR0050

H4J 0Ω, Jumper Wire

529

CPR0169

E1

GG6

191KΩ ±1%, 1/4W, MF

529

CPR0170

E1

GG6

294KΩ ±1%, 1/4W, MF

529

CPR0179

E1

GG6

392K ±1%, 1/4W, MF.

CPR0050

F1J 0Ω, Jumper Wire

531

CPR0050

F1J 0Ω, Jumper Wire

532

CPR0050

G1

KK7

0Ω, Jumper Wire

533

CPR0050

G1

KK7

0Ω, Jumper Wire, CS=.450”

600

CPB1615

Vertical Amplifier PCB

601

CPQ1314

W2

TIP32A Transistor

602

CPQ1313

W1

TIP31A Transistor

603

CPQ1313

W1

TIP31A Transistor

604

CPD1264

W1

2A, 600V Fast D., FR205-F

605

CPR0376

W1

1.2Ω ±5%, 1W, MO

607

CPR0003

V1

4.7Ω ±5%, 1/4W, CF

608

CPR0003

V1

4.7Ω ±5%, 1/4W, CF

610

CPR0377

V1

3.3Ω ±5%, 1W, MO

611

CPD1264

V1

2A, 600V Fast D., FR205-F

612

CPI1415

V2

V. Deflection IC, LA7838

613

CPS1858

V2

Vertical Amp Wiring Cable

800

CPB1613

L4

YY0

Video Board PCB E7

801

CPC1058

YY2

.1uF ±5%, 50V, Film

802

CPR0050

J

803

CPR0510

P1

RR2

“K” PRA Video Amplifier

804

CPR0050

J

805

CPQ1308

SS4

806

CPR0050

J

807

CPR0050

N1J 0Ω, Jumper Wire

808

CPR0050

P1J 0Ω, Jumper Wire

810

CPQ1308

SS1

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

503.5

.5

1.00MΩ ±1%, 1/4W, MF G

.1A, 200V, NPN, 2SC3467AE G

2.2MΩ ±5%, 1/4W, CF

2.2MΩ ±5%, 1/4W, CF G

529A

P1
P1

P1
P1
P1

N1

0Ω, Jumper Wire

0Ω, Jumper Wire

.1A, 200V, NPN, 2SC3467AE

0Ω, Jumper Wire

.1A, 200V, NPN, 2SC3467AE

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDGFH PLN R UI

BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI
BAC OQDGFH PLN R UI

A LI

A

BAC OQDGFH PLN R UI

AHI

BC O QDGF PLN R U

BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

H

G

F

E

F H

E

G

FH

E

G

F H

E

E

F H

E

G

F H

E

F H

E

G

F H

E

G

F H

E

G

F H

E

G

F H

E

G

F H

E

G

F H

E

G

F H

E

G

F H

E

G

F H

E
E
E
E
E

G c

FH

E

G

F H LI

E
E

E

JK
JK

JK

JK

JK
JK
JK
JK
JK

JK
JK

JK
JK

JK
JK
JK
JK
JK
JK
JK
JK
JK

JK
JK
JK

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK

LI
LI

LI

LI

LI
LI
LI
LI

LI
LI

LI
LI

LI
LI
LI
LI

LN R UIE
LN R UIE
LN R UIE
LN R UIE

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

T

X

X

c

c
c

c
c
c

c

c

c
c
c
c
c
c
c
c

c

c
c

c

c
c
c
c
c
c
c
c

c

c

c
c

c
c
x
x
x
x
x
x
x
x
x
x
x
x
v
v
v
v
v
v
v
v
v
v

0.01

0.01

0.01T

0.01

0.01

0.01T

0.02T

0.24T

0.01TMS

0.18T

0.01T

0.01T

0.01

0.01T

0.01T

0.01T

0.01T

0.07

0.07T

0.86T

0.06T

0.01T

0.01T

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01

0.01

0.01

0.01

0.01TMS

0.01

0.01TMS

0.14X

0.14X

0.14X

0.03X

0.02X

0.01X

0.01X

0.02X

0.03X

1.31X

0.89TMS

0.05TMS

0.01TMS

1.02TMS

0.01TMS

0.18TMS

0.01TMS

0.01TMS

0.01TMS

0.18TMS

CERONIX XX93 Monitor Part List 59

r

811

CPR0510

RR0

“K” PRA Video Amplifier

812

CPQ1301

N2

SS2

60V, .6A, PNP, PN2907A

813

CPR0050

J

814

CPR0050

J

815

CPC1003

VV5

2,200pF ±20%, 1KV, Ceramic

816

CPC1058

N2

YY2

.1uF ±5%, 50V, Film

817

CPC1058

N1

UU2

.1uF ±5%, 50V, Film

818

CPC1003

VV5

2,200pF ±20%, 1KV, Ceramic

820

CPR0050

J

821

CPR0050

J

822

CPQ1301

P2

SS4

60V, .6A, PNP, PN2907A

823

CPC1037

TT3

.1uF ±5%, 250V, Film

824

CPC1040

SS3

.015uF ±10%, 250V, Film

825

CPR0127

SS4

205Ω ±1%, 1/4W, MF

826

CPR0050

J

827

CPQ1301

SS3

60V, .6A, PNP, PN2907A

828

CPQ1309

SS3

830

CPR0011

TT4

1.8KΩ ±5%, 1/4W, CF

831

CPR0011

TT2

1.8KΩ ±5%, 1/4W, CF

832

CPQ1301

SS0

60V, .6A, PNP, PN2907A

833

CPQ1309

SS0

834

CPR0127

SS1

205Ω ±1%, 1/4W, MF

835

CPD1250

UU0

100mA, 200V Diode, FDH400

836

CPR0011

TT1

1.8KΩ ±5%, 1/4W, CF

837

CPQ1309

TT2

838

CPC1005

TT1

1,000pF ±10%, 500V, Ceramic

840

CPD1250

TT1

100mA, 200V Diode, FDH400

841

CPD1250

TT4

100mA, 200V Diode, FDH400

842

CPQ1309

P2

TT4

843

CPC1005

TT4

1,000pF ±10%, 500V, Ceramic

844

CPR0011

TT4

1.8KΩ ±5%, 1/4W, CF

845

CPD1250

VV0

100mA, 200V Diode, FDH400

846

CPC1043

XX2

1uF ±5%, 50V, Film

847

CPD1253

WW2

1A, 600V, Fast D., 1N4937

848

CPD1252

WW2

1A, 1KV Diode, 1N4007

849

CPD1250

100mA, 200V Diode, FDH400

850

CPQ1306

ZZ3

851

CPR0365

WW0

851

CPR0371

WW0

1KΩ ±5%, 1/2W, CF

852

CPR0018

ZZ3

853

CPC1034

N3

XX1

.022uF ±3%, 630V, Film

853

CPC1035

N3

XX1

3,300pF ±5%, 100V, Film

853

CPC1038

N3

XX1

.068uF ±5%, 100V, Film

853

CPC1040

N3

XX1

.015uF ±10%, 250V, Film

853

CPC1047

N3

XX1

.027uF ±3%, 800V, Film

853

CPC1058

N3

XX1

.1uF ±5%, 50V, Film

853

CPC1068

N3

XX1

.01uF ±5%, 400V, Film

!

854

CPC1026

N3

XX1

1,000pF ±5%, 100V, Film

!

854

CPC1027

N3

XX1

6,800pF ±5%, 100V, Film

!

854

CPC1035

N3

XX1

3,300pF ±5%, 100V, Film

!

854

CPC1038

N3

XX1

.068uF ±5%, 100V, Film

!

854

CPC1041

N3

XX1

0.33uF ±5%, 50V, Film

!

854

CPC1046

N3

XX1

.047uF ±5%, 200V, Film

!

854

CPC1052

XX1

!

854

CPC1054

N3

XX1

.039uF ±5%, 100V, Film

!

854

CPC1067

N3

XX1

.56uF ±5%, 100V, Film

!

854

CPC1073

N3

XX1

0.033uF ±5%, 200V, Film

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

N1

N2
N2
N2

P2
P2
P2

P2
P2
P2
P2
P2
P2
P2
N2
N2
N2
N2
N3
N3
N2
N3
N3
P3

P3
P3
P3
P3
P3
P3
P3 VV0
P3
N3
N3
N3

N3

0Ω, Jumper Wire

0Ω, Jumper Wire

0Ω, Jumper Wire

0Ω, Jumper Wire

0Ω, Jumper Wire

.1A, 200V, PNP, 2SA1370AE

.1A, 200V, PNP, 2SA1370AE

.1A, 200V, PNP, 2SA1370AE

.1A, 200V, PNP, 2SA1370AE

.1A, 1.5KV, NPN, 2SC3675

470Ω ±5%, 1/2W, CF

62KΩ ±5%, 1/4W, CF

.018uF ±5%, 200V, Film

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLIE

BAC OQDGFH P

BA

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

G

H

D

FE

D

H LI

C

G

I

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK

JK
J

K

K

J

LN R UIE

LN R UIE

LN R UIE

LN R UIE

LN R UIE

LN R UIE

N R

LN R UIE

L

N R

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

OQP

O

Q

P

v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v.

U

U

U

v.
v
v
v
v.
v
v
v
v.
v.
v.
v.
v.
v.
v.
v.
v.
v.
v.

1.02TMS

0.04TMS

0.01TMS

0.01TMS

0.02TMS

0.05TMS

0.05TMS

0.02TMS

0.01TMS

0.01TMS

0.04TMS

0.07TMS

0.06TMS

0.01TMS

0.01TMS

0.04TMS

0.23TMS

0.01TMS

0.01TMS

0.04TMS

0.23TMS

0.01TMS

0.02TMS

0.01TMS

0.23TMS

0.01TMS

0.02TMS

0.02TMS

0.23TMS

0.01TMS

0.01TMS

0.02TMS

0.16TMS

0.02TMS

0.01TMS

0.02TMS

0.88TMS

0.01TS

0.01M

0.01TMS

0.08

0.08

0.08

0.06T

0.46

0.05

0.07

0.07

0.07

0.08

0.08TS

0.08

0.32

0.07

0.06

0.18M

0.21

CERONIX XX93 Monitor Part List 60

r

!

854

CPC1076

N3

XX1

0.1uF ±5%, 200V, Film

855

CPR0371

N4

XX1

1KΩ ±5%, 1/2W, CF

856

CPR0366

YY1

!

857

CPC1034

N3

WW2

.022uF ±3%, 630V, Film

!

857

CPC1037

WW2

.1uF ±5%, 250V, Film

!

857

CPC1040

N3

WW2

.015uF ±10%, 250V, Film

!

857

CPC1046

WW2

!

857

CPC1052

WW2

!

857

CPC1074

N3

WW2

.068uF ±5%, 200V, Film

858

CPR0019

P3

YY3

100KΩ ±5%, 1/4W, CF

858

CPR0146

YY3

169KΩ ±1%, 1/4W, MF

858

CPR0170

P3

YY3

294KΩ ±1%, 1/4W, MF

859

CPR0032

YY2

860

XX2

10uF, 200V, Electrolytic

861

CPR0050

P3J 0Ω, Jumper Wire

862

CPR0050

J

863

CPS1772

ZZ3

863

CPS1849

P4

ZZ3

12 Cond. Video Cable, 17”

864

CPR0050

J

865

CPR0050

J

866

CPR0009

YY3

1KΩ ±5%, 1/4W, CF

867

CPR0050

J

868

CPC1101

VV2

10uF, 50V, Electrolytic

868

CPC1110

VV2

100uF, 50V, Electrolytic

869

CPR0050

M3

XX1

0Ω, Jumper Wire

870

CPD1250

VV2

100mA, 200V Diode, FDH400

871

CPC1002

WW1

330pF ±10%, 500V, Ceramic

872

CPR0004

VV2

270Ω ±5%, 1/4W, CF

872

CPR0011

M4

VV2

1.8KΩ ±5%, 1/4W, CF

872

CPR0024

VV2

872

CPR0141

M4

VV2

4.42KΩ ±1%, 1/4W, MF

872

CPR0143

M4

VV2

10.0KΩ ±1%, 1/4W, MF

873

CPR0370

WW1

874

CPR0011

VV1

1.8KΩ ±5%, 1/4W, CF

875

CPR0351

L4

YY2

150Ω ±10%, 1/2W, CC

876

CPR0019

L4

VV1

100KΩ ±5%, 1/4W, CF

!

877

CPS1850

L3

XX0

Dual Focus CRT Socket

!

877

CPS1852

L3

XX0

Single Focus CRT Socket

878

CPC1003

XX1

879

CPR0002

L3

XX2

18Ω ±5%, 1/4W, CF

880

CPR0351

YY1

881

CPR0368

M3

YY1

2.2KΩ ±5%, 1/2W, CF

882

CPR0351

XX1

883

WW1

883

CPR0371

WW1

1KΩ ±5%, 1/2W, CF

884

CPR0012

K2

VV6

2.7KΩ ±5%, 1/4W, CF

885

CPC1040

SS6

.015uF ±10%, 250V, Film

886

CPD1250

VV0

100mA, 200V Diode, FDH400

887

CPC1037

TT6

.1uF ±5%, 250V, Film

888

CPD1251

VV6

10mA, 75V Diode, 1N4148

889

CPC1003

WW6

2,200pF ±20%, 1KV, Ceramic

890

CPR0009

K2

WW7

1KΩ ±5%, 1/4W, CF

891

CPR0015

K2

VV6

22KΩ ±5%, 1/4W, CF

892

CPC1101

YY5

893

CPR0050

J

894

CPC1101

YY5

895

CPC1101

YY4

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

N4

N3

N3
N3

P3

P4

CPC1106 P3

P4
P4

P4
P4
N4
N4
N4
N4

N4
N4
M4

M4

M4
M4

L3

L3

L3

CPR0365 L2

L2

K3
K3
K2
K2
L2

L2
L2
L2
L2

100KΩ ±5%, 1/2W, CF

.047uF ±5%, 200V, Film

.018uF ±5%, 200V, Film

30Ω ±5%, 1/4W, CF, Hairpin.

0Ω, Jumper Wire

12 Cond. Video Cable, 12”

0Ω, Jumper Wire

0Ω, Jumper Wire

0Ω, Jumper Wire

3.3KΩ ±5%, 1/4W, CF

10KΩ ±5%, 1/2W, CF

2,200pF ±20%, 1KV, Ceramic

150Ω ±10%, 1/2W, CC

150Ω ±10%, 1/2W, CC

470Ω ±5%, 1/2W, CF

10uF, 50V, Electrolytic

0Ω, Jumper Wire

10uF, 50V, Electrolytic

10uF, 50V, Electrolytic

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BA
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE

BA

BAC OQDPN R

BAC OQDGFH PLN R UIE

BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PNRE

BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC QDGF H LIE

BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE

BA

BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE

BAC OQDPN R U
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P

BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

COQDGFH PE

G

F H

G

F H

CQD

G

F H

JK
JK
JK

JK
JK

JK
JK

JK
JK
JK
JK
JK
JK

JK
JK
JK

JK

JK
JK
JK
JK
JK

JK
JK
JK
JK
JK
JK

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK

LI

N U

LIE

N R U

LN R UIE

L UI
LN R UIE

LN R UIE

N R U

LIE

LIE

LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LIE

N R

LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

R

OPN R U

O P

v.
v
v
v.
v.
v.
v.
v.
v.

U

U

v.
v.
v.
v
v.
v
v
v.
v.
v
v
v
v
v.
v.
v
v
v
v.
v.
v.
v.
v.
v
v
v
v
v.
v.
v
v
v
v
v
v.
v.
v
v
v
v
v
v
v
v
v
v
v
v

0.28

0.01TMS

0.01TMS

0.08

0.07

0.06TS

0.32

0.07

0.14M

0.01

0.01TMS

0.01

0.01TMS

0.24M

0.01TMS

0.01TMS

1.24TMS

1.40

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.03

0.14TMS

0.01TMS

0.02TMS

0.01TMS

0.01M

0.01

0.01

0.01TS

0.01

0.01TMS

0.01TMS

0.06TMS

0.01TMS

1.31

0.95TMS

0.02TMS

0.01TMS

0.06TMS

0.01TMS

0.06TMS

0.01TS

0.01M

0.01TMS

0.06TMS

0.02TMS

0.07TMS

0.01TMS

0.02TMS

0.01TMS

0.01TMS

0.03TMS

0.01TMS

0.03TMS

0.03TMS

CERONIX XX93 Monitor Part List 61

r

899

CPD1250

N3

UU0

100mA, 200V Diode, FDH400

900

CPR0365

N3

WW0

900

N3

WW0

901

CPC1040

SS1

.015uF ±10%, 250V, Film

902

CPR0050

J

903

CPD1252

VV3

1A, 1KV Diode, 1N4007

904

CPR0050

J

905

CPD1252

WW3

1A, 1KV Diode, 1N4007

906

CPD1252

WW3

1A, 1KV Diode, 1N4007

907

CPC1058

WW4

.1uF ±5%, 50V, Film

908

CPR0016

YY4

909

CPR0024

M1

ZZ4

3.3KΩ ±5%, 1/4W, CF

910

CPR0016

YY5

911

CPR0016

M2

YY5

33KΩ ±5%, 1/4W, CF

912

CPR0018

ZZ4

62KΩ ±5%, 1/4W, CF

913

CPC1037

TT0

.1uF ±5%, 250V, Film

914

CPR0145

ZZ4

15.8KΩ ±1%, 1/4W, MF

915

CPR0050

J

917

CPR0506

WW4

“C” PRA, CRT Auto Bias

918

CPR0050

J

0Ω, Jumper Wire

920

CPI1405

WW4

Quad OP Amp IC, LM324

921

CPC1058

WW4

.1uF ±5%, 50V, Film

922

CPC1036

WW4

.047uF ±5%, 50V, Film

923

CPC1058

WW5

.1uF ±5%, 50V, Film

924

CPC1036

WW5

.047uF ±5%, 50V, Film

925

CPC1058

WW5

.1uF ±5%, 50V, Film

926

CPC1036

WW6

.047uF ±5%, 50V, Film

927

CPI1402

L2

XX4

CRT Bias IC, CA3224E

928

CPQ1301

WW7

60V, .6A, PNP, PN2907A

930

CPC1058

VV7

.1uF ±5%, 50V, Film

931

CPR0011

WW7

1.8KΩ ±5%, 1/4W, CF

932

CPR0050

J

0Ω, Jumper Wire

933

CPR0011

WW7

1.8KΩ ±5%, 1/4W, CF

934

CPC1058

RR7

.1uF ±5%, 50V, Film

935

CPR0050

J

0Ω, Jumper Wire

936

CPR0050

J

0Ω, Jumper Wire

937

CPR0510

K1

RR5

“K” PRA Video Amplifier

937

CPR0511

K1

RR5

“Blue” PRA Video Amplifier

938

CPR0011

VV7

1.8KΩ ±5%, 1/4W, CF

940

CPR0140

VV7

941

CPC1003

VV4

2,200pF ±20%, 1KV, Ceramic

942

CPQ1302

VV7

30V, .3A, PNP, D, MPSA64

943

CPQ1308

K2

SS7

.1A, 200V, NPN, 2SC3467AE

944

CPR0050

K2J 0Ω, Jumper Wire

945

CPQ1301

SS7

60V, .6A, PNP, PN2907A

946

CPR0050

J

0Ω, Jumper Wire

947

CPR0050

J

0Ω, Jumper Wire

948

CPR0011

TT7

1.8KΩ ±5%, 1/4W, CF

950

CPQ1301

SS5

60V, .6A, PNP, PN2907A

951

CPQ1309

SS6

952

CPR0050

J

0Ω, Jumper Wire

953

CPR0127

SS6

205Ω ±1%, 1/4W, MF

954

CPQ1309

TT7

955

CPR0011

TT7

1.8KΩ ±5%, 1/4W, CF

956

CPC1005

TT6

1,000pF ±10%, 500V, Ceramic

957

CPC1043

TT5

1uF ±5%, 50V, Film

957

CPC1058

TT5

.1uF ±5%, 50V, Film

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

470Ω ±5%, 1/2W, CF

CPR0371

N2
N2
N2
M2
M2
M2
M2
M2

M2

M2
N2
N1
N1
M1
M1
M1
M1
M1
L1
L1
L1
L1

K1
K1
K1
L1
K1
K1
L1
K1

K1
K1
K1
K1

K2
K2
K2
K2
K2
K2
K2
K2
K3
K3
K3
K3
K3

1KΩ ±5%, 1/2W, CF

0Ω, Jumper Wire

0Ω, Jumper Wire

33KΩ ±5%, 1/4W, CF

33KΩ ±5%, 1/4W, CF

0Ω, Jumper Wire

3.92KΩ ±1%, 1/4W, MF

.1A, 200V, PNP, 2SA1370AE

.1A, 200V, PNP, 2SA1370AE

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

BAC OQDGFH PLN R UIE
BAC OQDGFH PLIE

BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BCD N R U

AOQ

BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE

BAC OQDGFH PLIE

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

JK
JK

JK

LN R UIE

JK
JK
JK
JK

LN R UIE

JK
JK
JK
JK
JK
JK
JK

LN R UIE

JK
JK

LN R UIE

JK
JK

LN R UIE

JK
JK

LN R UIE

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK

G

FH PLIE

JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK
JK

JK

LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE
LN R UIE

N R U

N R U

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

v
v.
v.
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v.
v.
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v.
v.

0.02TMS

0.01TS

0.01M

0.06TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.05TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.01TMS

0.07TMS

0.01TMS

0.01TMS

0.79TMS

0.01TMS

0.24TMS

0.05TMS

0.04TMS

0.05TMS

0.04TMS

0.05TMS

0.04TMS

3.47TMS

0.04TMS

0.05TMS

0.01TMS

0.01TMS

0.01TMS

0.05TMS

0.01TMS

0.01TMS

1.02M

1.02TS

0.01TMS

0.01TMS

0.02TMS

0.06TMS

0.18TMS

0.01TMS

0.04TMS

0.01TMS

0.01TMS

0.01TMS

0.04TMS

0.23TMS

0.01TMS

0.01TMS

0.23TMS

0.01TMS

0.01TMS

0.16M

0.05TS

CERONIX XX93 Monitor Part List 62

r

958

CPD1250

TT7

100mA, 200V Diode, FDH400

959

CPD1250

K4

WW0

100mA, 200V Diode, FDH400

961

CPS1758

K4

YY1

.093” Bead Pin, Dag. GND

963

CPM2003

K4

Cable Tie, 4”

964

CPM2043

Video Board Cover

965

CPM2051

Video Board Insulating Sheet

!

971

CPS1766

ZZ0

!

971

CPS1771

ZZ0

!

971

CPS1786

ZZ0

2793, Degaussing Coil

!

971

CPS1828

ZZ0

1793, Degaussing Coil

!

971

CPS1856

ZZ0

3693, Degaussing Coil

!

971

CPS1860

ZZ0

1993, Degaussing Coil

CPS1775

14” Grounding Strap

CPS1791

CPS1792

27” Grounding Strap

A

A6

AA9

B

C

!

CRT

17”

!

CRT

17”

!

CRT

CPP1703

20”

0

!

CRT

CPP1707

27”

0

!

CRT

CPP1708

27”

5

!

CRT

CPP1711

14”

!

CRT

CPP1717

20”

0

!

CRT

CPP1721

36”

5

!

CRT

CPP1724

20”

0

!

CRT

CPP1725

19”

0

!

CRT

CPP1726

17”

0

!

CRT

CPP1727

17”

5

!

CRT

CPP1728

27”

CRT

CPS1831

17” Grounding Strap

CRT

CPS1846

36” Grounding Strap

CS

A6

DD9

CSync Pin 1&2 of Conn.292

G

Video, -Analog, Selection.

H

Vertical linearity Adjustment.

I

Vertical linearity Adjustment.

IA

D6

GG4

Reverse Horizontal Sync.

IC

E6

KK4

Horizontal Frequency Adj.

ID

E6

KK4

Horizontal Frequency Adj.

J

A5

Video, +Analog, Red Gain.

JC

D1

GG5

Power Supply V+ Adj.

JD

D1

HH7

Power Supply V+ Adj.

JE

E1

HH5

Power Supply V+ Adj.

K

Video, +Analog, Green Gain.

L

A5

CC7

Video, +Analog, Blue Gain.

M

CPM2024

Front Support Bracket

M

CPM2025

Rear Support Bracket

M

CPM2026

Right Support Bracket

M

CPM2029

Left Support Bracket

M

CPM2060

Rear Support Bracket

M

CPM2113

G6

H. Transistor Support

M

CPM2550

G6

H. Transistor Support Screw

M

CPM2551

G6

H. Transistor Support Screw

M

C6

DD9

Reverse Hs, AC Video Clamp.

N

C7

DD8

Reverse Hs, AC Video Clamp.

P

A5

AA5

Video, -Analog, Blue Offset.

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

K3

BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQD P
BAC OQDGF PLN R UI

JK
JK
JK
J
JK

LN R UI

HE

1493, Degaussing Coil

BACD

2093, Degaussing Coil

G

HE

JK

LI

998
998

20” Grounding Strap

BA C

JK

998

Solder Conn.
Solder Conn.
Solder Conn.

Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder conn
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.

B6 BB9 Green Video, Input Line Filter.
B6 BB9 Blue Video, Input Line Filter.

B5 BB5
D5 KK1
D5 JJ1

B5 BB7

Red Video, Input Line Filter. s

Chunghwa M41AJR53X46
Orion M41KXU100XX01
RCA A48AAB37X01 CRT. c
RCA A68AEG25X07 CRT.
RCA A68AEG25X05 CRT. c
Chunghwa M34AFA13X07 CRT.cv
RCA A48AAB37X03 CRT.
RCA A90AEJ15X02 CRT. c
Chunghwa A48AGY13X87 CRT. v
Samsung M46QCY261X112 CRT.
Chunghwa M41AGE13X47R CRT.
Samsung M41QCJ761X172 CRT.
Samsung M68QCP891X002 CRT.

BACD

JK

FHE

G c

G

FHE

N

M

LI

BAC QDH NsMS

JK

BAC OQDH PIE

JK

G

BAC OQDF H P

JK

LN UIE

AA7

A

G

B

BAC OQDGFH P

JK

LN R UIE

BACD R

JK
JK
JK
JK
JK
JK

LN R UIE
LN R UIE
LNIE

M

Solder Conn.
Solder Conn.
Solder Conn.

BAC OQDGFH P
BAC OQDGFH P

G

FH P
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE
BAC OQDGFH PLN R UIE

B

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

OQPN

R

OQPLNI

R

S

R

Q

O P

T

R U

O PLRUI

T
TMS

R

TMS
P

P R

OQ

TMS

TMS

v
v
v
v.
v.
v.
c
c
c
c

U

c
c
c
c
c

0.02TMS

0.02TMS

0.02TMS

0.01MS

0.61TMS

0.18

1.70

3.15M

14.82TS

2.42

15.14

9.80

0.33

0.33M

0.77TS

s
s
c
c

c
c
c
c
c

U

c
c
c
c

122.5

300.3

288.7

87.50

105.0

918.7

101.5

245.0

140.0

218.7

c

c

U

c

0.33

0.79
s

s

s
s
s
s
s

U
UE

s
s
s

s
s

c

U

c
c
c
c

1.87TMS

0.18TM

0.42TMS

0.42TMS

0.26S
c
c
c

0.03TMS

s
s

s

CERONIX XX93 Monitor Part List 63

r

Q

A2

NN7

R

C2

NN7

S1

Raster Shift, One Unit.

S2

Raster Shift, Two Units.

S4

Raster Shift, Four Units.

SL

G5

OO3

Raster Shift Left.

SR

G5

OO3

Raster Shift Right.

T

C5

BB4

M. Gain Limit Adjustment.

T

C5

BB4

M. Gain Limit Adjustment.

TR

G2

JJ6

U

C5

BB4

M. Gain Limit Adjustment.

V

D6

HH2

Vertical Frequency Adj.

W

C3

Touch Screen -V Set.

V+

107

106V to 108V

V+

111

110V to 112V

V+

114

113V to 115V

V+

124

123V to 125V

V+

127

126V to 128V

V+

52.0

51.3V to 52.7V

V+

54.0

53.3V to 54.7V

V+

54.5

54V to 55V

V+

55.5

55V to 56V

V+

64.5

64V to 65V

V+

70.0

69.5V to 70.5V

V+

72.5

72V to 73V

V+

77.5

77V to 78V

CPB1606

CPR0050

0Ω, Jumper Wire

CPD1252

1A, 1KV Diode, 1N4007

CPD1267

TZL200B 200V ±5% .5W, Z.D.

CPR0016

CPR0171

!

CPR0425

CPR0431

250VAC, 6Ω, 0.145A R. Fuse.

CPC1037

.1uF ±10%, 250V, Film

CPR0157

127K ±1%, 1/4W, MF

CPD1252

1A, 1KV Diode, 1N4007

CPD1252

1A, 1KV Diode, 1N4007

CPC1069

CPC1110

CPQ1315

CPD1257

CPD1269

P6KE27A 27V 600W, TVS

!

CPC1011

2,200pF ±20%, 250VAC

!

CPR0436

!

CPR0437

CPR0050

0Ω, Jumper Wire

CPR0360

!

CPC1011

2,200pF ±20%, 250VAC

CPM2047

ISO XFR 75W Housing

TX

CPM2146

ISO XFR 100W Housing

!TXCPT1507

75W Isolation Transformer.

!TXCPT1553

100W Isolation Transformer

!TXCPS1830

Input Power Cable

!TXCPS1762

Output Power Cable

TX

CPM2517

Vinyl Grommet

A CPA4233, 1493-CGA
B CPA4235, 1493-CGA
C CPA4200, 1493-VGA
D CPA4252, 1493-SVGA
E CPA4243, 1793-VGA
F CPA4244, 1793-VGA X Vertical Deflection Booste

G CPA4247, 1793-SVGA
H CPA4250, 1793-SVGA
I CPA4221, 1993-VGA

J CPA4255, 1993-VGA

K CPA4249, 1993-SVGA
L CPA4256, 1993-SVGA

M CPA4112, 2093-CGA
N CPA4166, 2093-CGA
O CPA4224, 2093-VGA
P CPA4227, 2093-VGA
Q CPA4108, 2093-VGA
R CPA4104, 2793-CGA

∆ Bd.# Part No. Bd. Sch. Ref. Description A B C D E F G H I J K L M N O P Q R S T U V W X Com. PRICE

S

Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.
Solder Conn.

F5 PP3
F5 PP3
F5 PP3

Verrable Parabolic Pincushion Range.
Verrable -Linear Pincushion Range.

Cut pin1 of 166, solder pad 1&2.

K

ADFH P

G

G

J
J
JK

LRUIE
LI
LRUI

AQDF HE

C D

BQ

G

N

COQD

N RcTM

B

A

K

J

I

L

FE

G c

H

T500
T501
T502
T503
T504
T505
T506
T507
T508
T509
T510
T511
T512
T513
T514
T515
T516
T517
T518
T518
T519
T519
T520
TX

ISO XFR PCB. .062", CEM-1.

33KΩ ±5%, 1/4W, CF
365K ±1%, 1/4W, MF
3 Amp Slow Blow Fuse.

1.5uF ±5%, 400V, Film
100uF ±20%, 50V Electrolytic
IRF520 100V, 8A Mos Fet.
1N4742A 12V ±5%, 1W,

Relay; 8A, 250VAC, Coil; 24VDC

10A, DPDT Voltage Select

2.7Ω ±10%, 1W, CC Resistor.

S CPA4231, 2793-VGA
T CPA4254, 2793-VGA
U CPA4172, 3693-CGA
V ISO XFR-75W
W ISO XFR-100W

Q

TS

P

TS

O

P

S

U

U

V W
V W
V W
V W
V W
V W
V W
V W
V W
V W
V W
V W
V
V
V
V
V
V
V
V
V
V
V
V

V

V W
V W
V W

s
s

s
s
s
s
s
s

s

s
s
s

s

c
c

c

c

c
c

c

c
c
c

c
t
t
t
t
t
t
t
t
t
t
t
t

W
W
W
W
W
W
W
W
W
W
W

t
t
t
t
t
t
t
t
t
t
t
t

W

t
t

W

t
t
t
t

0.40

0.01

0.01

0.12

0.01

0.01

0.32

0.55

0.07

0.01

0.01

0.01

0.79

0.14

0.41

0.04

0.23

0.09

1.30

2.68

0.01

0.61

0.09

3.47

14.88

28.44

0.60

0.51

0.08

VIDEO INTERFACE CIRCUIT, FUNCTION, DESCRIPTION (+ & - Analog).

The video interface circuit is a general
purpose RGB type input circuit. This circuit
connects the external video signal to the video
amplifiers. It can accept, DC or AC coupled
positive going analog, negative going analog,
and 4 line TTL.

SIMPLIFIED VIDEO INTERFACE CIRCUIT:

Black Level (5.6V)

1. NEGATIVE GOING ANALOG MODE.

Saturated Color (1V)

3.5V

RED
VIDEO
INPUT

301Ω

271

340Ω

236278

7.5V BIAS LINE

6.3V

2

3

-Analog Black Level (-A BL)

+12V

C5346

241

In the negative analog mode, the video signal
has a black level (5.6V) which is the -A BL
voltage. The saturated color is the lowest input
voltage (.9V-1.1V). The current amplitude to
the video amplifiers is defined by resistors 278
& 236 and the master gain voltage.

236

278

The particular mode of operation is selected by
inserting jumpers, different value components,
and solder bridges. The Production Assembly
Drawings (PADs) are given in the appendix
which describe the component differences.

200

RED channel shown

Blue channel only

Ω

3.6K

MG

16

6

12

VIDEO

AMPS

MASTER
GAIN&
BLANKING

4.7K
239

G

+12V

For the blue channel only, 15% of the output
current is subtracted by resistor

239

265 .

Signal sources with 8 bit drivers, that use 2
bits for the blue channel use this 15% offset.
To prevent input line ringing from exceeding
the saturated color voltage limit, a clamp diode

271

271 has been added.

Saturated Color (.70V)

2. POSITIVE GOING ANALOG MODE.

Black Level (0V)

RED
VIDEO
INPUT

15.8K
261

270Ω 15KHz

75Ω 31KHz

278

11

.44V

7.5V BIAS LINE

+ANALOG ENABLE

2

+12V

C5346

0-11V or 12V

15.8K

75Ω

288

75.0Ω
226

223

1

J

0Ω

241

In the positive analog mode, a bias current of
.6mA flows to the input pin 2. This current is
set by resistor

261

261 at the +Analog Enable

input pin 11. The .6mA produces a voltage,
across the parallel resistance of the game and

288 plus resistor 278 , at pin 2. If the

278288

external source resistance is 75 ohms, the black
level voltage at pin 2 is .18V for 15KHz and
.07V for the 31KHz.

200Ω

RED channel shown

3.6K

MG

16

12

VIDEO

AMPS

MASTER
GAIN &
BLANKING

The black level voltage is set by resistor
divider 223 & 226 to compensate for the

226223

bias current voltage drop. An optional,
variable black level, is accomplished with the
black level adjustment pot.
The input termination resistor 288

288

reduces video line ringing and produces a
dark screen when the video input connector
is disconnected.
The normal saturated color is set at .70
volts. Higher saturated color levels can be
accommodated with resistor or gain changes.

64

5.6V to 1.1V, NEGATIVE ANALOG, DC COUPLED, VIDEO INTERFACE CIRCUIT DESCRIPTION.

Red Video Amp.

Green Video Amp.

Blue Video Amp.

FIL.

HSync

CRT Auto Bias

V

Sync

TC7 Red
TC5 Green
TC 3 Blue

Blanking & Beam Current Limit

FDH400

084

FDH400

086

FDH400

213

16 13 5 12396 11

BoRo Go GAINM+ ENA

B

IN R

R

R

Vertical O/S or Delayed Vertical O/S.

P

4.7K

239

BL

Controls XRC5346A

B+G+R=∑

ABA

TC 6TC 10

End Vertical Blanking

+12V

G

IN

Beam current

Feedback

Beam current

Feedback

Beam current

Feedback

Current

Buffer

SOCKET BOARD CONNECTOR (TC) 206

S

1.62K 604Ω 1.21K

260 244 245

1.21K

258

10

+12V

A- BL

R

G

Beam

T

TTL

U

2.7K

064

0Ω, CS=.30"

228

241

IN

BG

21 1415 7 8

340Ω 340Ω

236

301Ω

278

1N4148

271

218 266

340Ω 301Ω

277

1N4148

270

GND

301Ω

276

SOCKET BOARD

ARC PROTECT

Auto

Bright

VIDEO GAIN
LINE

1.62K

076

GND

R

B

4-7VDC

5-9Vpp 61,B4

4

1N4148

268

Vs

+12V

GND

0Ω

293

12V

VC

0

3.5V

800

+

PN2222

CRT

127V TC8

TC1 +16V

TC2 GND

TC4 +12V

+

100uF

209

Remote

1K

062

100uF

+12V

274

Control

RC2

11.5V-12.5V

The clamp

267

diodes are

installed

backwards with

respect to the

PCB legend.

TC11
TC12

PCB

+12V

M. GAIN
1K

485

GND

Note:

3.92K

272

2.15K1K

273275

0VDC
56V 28,D3

Filament
Fil. Ret.
Screen
Focus
EHT

+127V

+16V
+12V

GND

271
270
268

Hs

Video

R

VC

4

RED

INPUT

GND

VC

3

Connecter

292

G

VC

5

GREEN

INPUT

BLUE

INPUT

B

VC

6

In each of the video interface circuit configurations,
current from the interface circuit is converted to a
voltage at the CRT cathodes. The simplest current
path is accomplished by the negative analog video
interface configuration.

The voltage drop across the input resistors

236

236 , for the red channel, is the current which drives

278

278 and

the video amplifiers when the video gain line is at

8.2 volts. For a lower gain line voltage, part of the
current is directed to the +12 volt line. During blanking
all the input current flows to the +12 volt line.

and there is no video amplifier output. For the red and
green channels, a 1 volt change at the video input
produces a 15 volt change at the video amplifier output.
For the blue channel this change is 18 volts but resistor

265

265 subtracts the equivalence of .6 volts from the input
which results in the same saturated color as the red and
green channels.

270

The clamp diodes

271 268

271 , 270 , & 268 limit the

maximum current to the video amplifiers. This avoids
over driving the video amplifiers when undershoots at
the input cables are present. The clamp reference
voltage is set by resistors
transistor 274 . Load resistor 275 stabilizes this

274

272 , 273 , and buffer

272

273
275

buffered clamp voltage.

65

0V to .7V, POSITIVE ANALOG, DC COUPLED, VIDEO INTERFACE CIRCUIT DESCRIPTION.

To Video Board

TC7 Red
TC5 Green
TC 3 Blue

Blanking & Beam Current Limit

FDH400

084

FDH400

086

FDH400

213

11.5-12.5V

+12V

GND

15.8K

261

16 13 9 6

o

o GAIN

RoG

R

B

IN R

R

+ EN

A

B

BL

Controls XRC5346A

+12V

IN

ST

- BL

R

1.21K

311

A

604Ω 1.21K

258

1.62K

260 244 245

10

G

0Ω

5

TTL

2.7K

228

064

U

241

BG

M

IN

21 1415 7 8

A5

0Ω

J

75.0Ω

15.8K* 15.8K* 15.8K*

225

1.87K

223

226

B5

0Ω

218

0Ω

A5

K

243

242

84.5Ω

264

L

1.62K

076

12

GND

R

B

VIDEO GAIN
LINE

4-7VDC

5-9Vpp

12V

VC

4

56pF

205Ω

265

0Ω

233

88.7Ω

232

0

2.15K2.15K

62,B4

+12V

GND

0Ω

293

234

231

Vs

1K

062

RC2

+

100uF

PN2222

221

267

*Replace

221 with a

0Ω jumper
for fixed
black level.

0Ω

10K

070

Remote
Control

M. GAIN
1K

GND

219

+12V

485

GND

PCB

+12V

GND

RED

1N4148

271

75Ω

288

GND

VC

3

GND

292

G

VC

5

75Ω 75Ω

278

R

VC

4

INPUT

277

GREEN

INPUT

1N4148

270

75Ω 75Ω

286

For DC coupled positive analog video signals, the
signal source black level is 0 volts. The standard
saturated color voltages are .7 volt and 1 volt.

The RGB video signals and sync are connected to
the monitor through the video input connector 292 .
Resistors 288 , 286 , & 284 terminate the video

284286288

292

lines and load the input such that, when no signal
source is connected, the screen is dark.

Resistors 278 , 277 , & 276 protect the video
interface IC 241 from transients. They also act as

278 277 276

241

load resistors for the clamp diodes. The clamp diodes
271 , 270 , & 268 limit the peak amplitude of the

270271

268

video, to prevent overdrive of the video amplifiers.
These diodes are connected to transistor

275

resistor
transistor 274 balances the clamp diode’s forward

275 . The base to emitter voltage of the

274

voltage for temperature compensation. Resistors

273

and 273 set the clamp voltage.
The gain of the input circuit is set by resistors

264 , & 232 .

232264

274

274 and load

272

272

226

226 ,

75Ω

276

GND

BLUE

B

INPUT

VC

6

Resistors 223 , 242 , & 231 produce a voltage drop

1N4148

268

284

GND

223

PN2222

274

30Ω

231242

3.92K

412Ω

across the gain resistors to offset the voltage drop
caused by the .6mA bias current across the input and
protection resistors. +12 volts to these resistors
produces a fixed black level. An optional black level
adjustment may replace the +12V with a range of
0 volts to 11.3 volts. Potentiometer 070 is buffered by
transistor

221

221 and resistor 219 which provide the

219

070

adjustment voltage.

The master gain line is connected to the video

241

interface IC
by the gain resistors

241 at pin 12. It multiplies the gain set

225

226

225 , 226 , etc. by 0 to 1.

Vertical and horizontal blanking set the gain to 0
during retrace. The gain is adjusted by the master
gain control

485 through load resistor 062 . The

485

062

maximum gain may also be limited by making solder
connections S , T , & U .

Diodes

S

084

084 , 086 , & 067 clamp the video lines

T

086

U

213

connected to the video board to prevent damage to the
video interface IC from arc related voltage spikes.

272

273275

66

1Vp-p, POSITIVE ANALOG, AC COUPLED, VIDEO INTERFACE CIRCUIT DESCRIPTION.

16 13 5 12396 11

o

o GAIN

RoG

B

+ EN

A

B

BL

Controls XRC5346A

21 1415 7 8

A5

1N4937 1N4937 1N4937

J

225

1.87K

88.7Ω 100Ω

226

223

MPS2907

10

+12V

K

0Ω

218

- BL

A

243

264

MPS2907

TTL

2.15K

242

241

M

4

GND

INBGINRIN RR RG

RB

A5B5

L

233

2.15K

105Ω

232

231

MPS2907

+12V

GND

PN2222

221

+12V

PN2222

Black Level
Adjustment
is optional.

0Ω

219

10K

070

1nF

272

2.7K

305

MPS2907

270Ω 270Ω 270Ω

PN2222

R

VC

4

1N4148

237

311

RED

INPUT

271

75Ω

288

270Ω

310

GND

VC

PN2222

GND

G

VC

292

3

5

278

.33uF

281 280 283

277

312

.33uF

GREEN

INPUT

1N4148

238 266

270

270Ω

308

75Ω 75Ω

286

BLUE

INPUT

In the + analog AC coupled mode, the video black
level is set by a clamp circuit which is active during the
first part of horizontal sync. For this circuit to work
properly, the incoming video must be at the black level
voltage when horizontal sync starts and remain
blanked for at least 4.5uS.

The clamp circuit is dependent on the polarity of
incoming horizontal sync. For separate horizontal
sync, the sync polarity should be positive. For
composite sync, and positive going horizontal sync
pulses, resistor

320

320 (.30” long) is connected to the

inverting horizontal sync comparator which is the same
as separate, positive, horizontal sync. For composite
sync, with negative going horizontal sync pulses,

320

resistor

320 (.45” long) makes the connection to the

noninverting vertical sync comparator. This connection
is valid since the horizontal and vertical sync lines are
connected together for composite sync.

The clamping function is accomplished by turning on
transistor 303 at the start of horizontal sync through
the differentiating action of capacitor 316 and resistors

305 & 320 . The collector of this transistor is

connected to clamp transistors
through resistors 310 , 308 , & 307 with pull down
resistor 315 . The coupling capacitors 281 , 280 , &

283

283 at the video input are set to the black level voltage

303

316

320305

311 , 312 , & 313

310

308

315

307

313312311

280281

by the video source.

1N4148

276

PN2222

313

.33uF

For composite sync.

H. Sync.+

B

VC

6

H. Sync.

268

284

270Ω

307

GND

For separate -H sync
see schematic at DD8.

2
1

355

10K

275

270Ω

315

1.0M

273

320=.30”
320+.45”

274

2.7K

320

303

GND

1N4148

317

1N4148

319

47nF

309

100pF

316

If the coupling capacitor voltage, on the clamped side,
is high at clamp time, the clamp transistor shorts the
capacitor to GND by normal transistor action. If the
coupling capacitor voltage is low at clamp time the
clamp transistors act as dual diodes to raise the
capacitor voltage to GND, which is the black level
reference for the video input circuit.

The ground referenced video signal is then buffered

237 266238

by transistors
resistors 278 , 277 , & 276 . The buffer transistors

237 , 238 , & 266 through protection

277 276

278

are needed to reduce the .6mA bias current, from the
video interface IC, to under 10uA which limits the
coupling capacitor voltage buildup to 2mV during one
horizontal cycle.

Resistor

275 268270

275 and clamp diodes 271 , 270 , & 268

271

are connected to the coupling capacitors to limit the
voltage buildup when no sync is present. If this limit
did not exist, the monitor would show excessive
brightness without sync. When sync pulses are
present, capacitor 309 with rectifier diodes 317 &
319 and filter capacitor 272 apply a voltage to the
base of transistor 274 which raises the voltage on the

309

272319

274

317

clamp diodes to avoid interference with the video signal.
Diodes 226 , 243 , & 232 balance the base to

225 243 233

emitter voltage of the buffer transistors. The rest of
the video interface functions the same as the DC
coupled video interface circuit.

67

+

VIDEO AMPLIFIER CIRCUIT, FUNCTION, DESCRIPTION.

The video amplifier, is a high speed push pull
amplifier, which can swing as much as 90 volts.
The maximum dynamic output swing is limited to
60 volts. The rest of the output voltage range is
reserved for bias adjustment.

+12V

1.49K

K9

1

NE592

14

836Ω

K10

VIDEO
INTERFACE

C5346

SIMPLIFIED VIDEO
AMPLIFIER CIRCUIT:

Ω

301

K2

1.50K

K1

2N

3904

K34

606

K7

681Ω

K6

K6

Ω

The video amplifier drive circuit is built on a
ceramic substrate which is a good heat sink.
The printed resistors and conductors are small
and have precise geometries which output a
faithful reproduction of the input signal with
good high frequency response and low overshoot.

127V

120V

40.2K

K19

5.62K

K11

560Ω

K17

12.1K

K15

16V

MPS2907

7

Bias Control Line
from Auto Bias IC

945

140Ω

B14

K16

.015uF

885

18

K14

2SA1370

OUTPUT

2SC3467

15Ω

K4

+9.25V line

The NE592 is a 120MHz emitter coupled
differential amplifier which is connected to a
push pull output stage. This output stage
has a low bias current of 3mA and a
bandwidth of 25MHz. Although at 25MHz,
the output stage current increases to 15mA.

VIDEO AMPLIFIER CIRCUIT DESCRIPTION

The video amplifier's output voltage, with
no input signal, is the black level which is the
picture tube cut off voltage. This voltage is set,
for each of the three video amplifiers, by the
auto bias circuit via the bias control line. This
black level voltage has a range of 80V to 110V.

The voltage swing at the output is 60 volts
for a 10 mA current signal from the C5346.
For this same 10 mA current signal, the
voltage swing at the video amplifier input is

1.5 volts and the input voltage swing at the
NE592 is .80 volts. The reason for using the
voltage divider K6 and K7 is that the C5346
minimum output voltage is 7.7 volts, and the
bias voltage at the NE592 input is 5.3 volts.

The input signal is buffered by a NPN
transistor K34 for low input capacitance.
Resistors K1 and K2 set the black level
input voltage at 10 volts. Resistor
schematic next page) and diode
the input against arc related transients.
Resistors
input bias voltage for the NE592. Diode
acts as a temperature compensator to match
the emitter to base diode in the
buffer transistor.

K6

K34

K1 K2

K6 and K7 are used to set the

K7K6

K7

K21

K21 (see

K36

K36 protect

K35

K35

The negative feedback circuit consists of
bias resistors
resistor K19 . The geometry of the feedback

K19

K9

K9 , K10 and output feedback

K10

circuit defines the AC negative feedback path.
The autobias output, which adjusts the black
level voltage, is also connected to this node

K11

through resistor
connects resistor K22 , which raises the video

K11 . Solder connection A

K22

A

amp. output voltage by 10V, for some CRTs.
The voltage gain of the differential

amplifier K32 is set by resistor K8 . The
output of the amplifier has a load resistor

K8K32

K5

K5

for faster low going transitions and is
buffered by a PNP transistor 945 with base
matching resistor
this buffer amplifier is

K20

K20 . The load resistor for

K3

K3 which is

945

connected to the 16 volt line.
The buffered output of the differential

amplifier is DC coupled to the NPN transistor

943

943 and AC coupled, by capacitor 885 , to
the PNP transistor 951 of the push-pull
output stage. Resistors K18 and 953

951

K18

885

953

protect the push-pull transistors from current
spikes caused by voltage transients when CRT
arcing occurs.

68

VIDEO AMPLIFIER SCHEMATIC.

Blue Video Amplifier

210

301

K2

MMBT

3904

100Ω

K21

1

1.62K

K1

+12V

1.49K

Ω

K34

Ω

606

K7

Jumper

K33

K9

1.0K

K8

1
3

12
14

SOT

NE592

K32

1N4148

3pF

K36

681Ω

K6

K6

1N4148

K35

A

21K

K22

836Ω

K10

937

40.2K

K19

10

5

7

8

.1uF

934

5.62K

K11

1295

18

12.1K

K15

10

33

2.2K

3

3

150

.5W

4

MPS2907

Ω

K20

K5

17

K3

K3

8

GND

560

140

B14

16

.015uF

Ω

945

K17

Ω

K16

885

Ω

MPS2907

20

2SC

3467

9

11

3.32K

K12

2SA

1370

19

6

950

951

180

K18

205

953

943

15

K4

.1uF

957

75

14

Ω

18

K14

15

Ω

.1uF

250V
887

7

Dark screen

80-110VDC

1nF

Ω

956

FDH400

7

Ω

958

2SA

1370

954

BIAS CONTROL LINE

Ω

K13

1.8K

948

13

9.25V

PART

OF

AUTO

BIAS

1.8K

955

127V

16V

120V

BLUE

VIDEO

TO

CRT.

Beam

Current

Feedback

FROM

CA3224

GND

+12V

VIDEO INTERFACE

MG

VERTICAL and

HORIZONTAL

BLANKING,

Master Gain, &

Beam limiter

R G B

VIDEO SOURCE (external)

The bias current of the push-pull output
stage is set by resistors K14 , K15 , K16 ,

K17

K17 , and diode connected transistor 950 .

950

Transistor
transistor 951 to maintain the same base to

950 is thermally connected to

951

emitter voltage drop. Note that resistor K17

K14

K16K15

950

K17

adds 11mA to the diode connected transistor

950

950 . This current is available to drive the

951

base of transistor

951 during periods of high

frequency amplification. This high base
current is needed because, the beta of
transistor 951 is low for high current pulses

951

and when high frequency is amplified many
high current pulses occur. The mechanism
for transferring the current from

+12V

1.8K

938

MPS A64

D

942

3.92K

940

transistor

950

950 to the base of transistor 951

is the coupling capacitor 885 which charges
through resistor K16 on the positive part of

GND

885

K16

9.25V

.1uF

930

951

the signal and discharges through the base of
transistor 951 on the negative part of the

951

drive signal. Therefore the output stage,
bias current, is frequency dependent and has
a range of 3mA to 15mA.

Resistor K13 and capacitor 887 , which are

K13

887

connected to the 9.25 volt line, decouples the
video amplifier current pulses from the 127V
line. The 9.25 volt line is connected to the
emitter of the NPN push-pull transistor by
resistor K4 . This voltage establishes the

K4

output voltage of the NE592 in the middle of
it's ±2 volt drive range. The 9.25 volt line is
regulated by darlington transistor 942 with
voltage divider resistors

938 940

938 & 940 .

942

69

VIDEO BOARD POWER SUPPLY AND ARC PROTECT SCHEMATIC.

+127fV
+120V

FDH

400

835

From Video Amp.

Grid Pulse

100K

876

GND

FIL.

+127fV

+16V

+120V

+12V

GND

100uF

50V

868

Power supply voltages shown, are
for the 2793-CGA monitor.

FDH
400

899

FDH

400

845

1.87K

874

-16V to-25V

872

FDH

400

849

10Vp-p 95uS

FDH400

870

+120V Source

FDH

400

886

RED

GREEN

BLUE

10K 1/2W

Vs-23 to -27Vdc

873

0VDC
56V 31uS

857

400

Hs

FDH

959

Caution! 2 pin degaussing coil plug (CC1 &
CC2) must be plugged in such that the pin
with the extra wire is closest to the fuse.
UNPLUG WHEN REPAIRING MONITOR.

1/2W

900

1/2W

851

1/2W

883

SOCKET

1N4005

848

1N4937

847

877

330pF

871

+

8
6

11
12

150Ω

1/2W

882

DAG GND

1uF
50V

846

+

200V

860

10

18Ω

G1 G2 Focus

5

97

0Ω

896

853854

FIL.

.1uF

801

879

1K

1/2W

855

2.2nF

30Ω

859

CC1
CC2
CC3

1

150Ω

1/2W

880

2.2K

1/2W

881

100K

1/2W

856878

DAG GND

.1uF

816

Auto Bright Control Output.

0Ω

962

Ω

150

1/2W cc

875

Green

Wire

961

From MAIN PCB

970

EHT

SCREEN

Socket Board

800

PCB

FIL.

Fil. GND

+127V

+16V

+12V

GND

971

Degaussing Coil

EHT

FOCUS

TC 11
TC 12
TC 8
TC 1
TC 4

TC 2

The high voltage in the CRT, through an arc, can
be conducted to any tube socket connection on the
video board. To reduce the danger of these arcs
causing component failure, a number of arc current
paths are provided. The tube socket has integral
spark gaps which conduct arc current to the tube
ground (aquadag). through dissipation resistor 882 .

882

The clamping voltage of the spark gaps to the
cathodes and G1 is about 1.5KV.

The peak arc current to the video amplifier
outputs is limited by resistors 900 , 851 , & 883 .

883851900

Each amplifier output is connected to two clamp
diodes

835 899 845 849 886 859

835 , 899 , 845 , 849 , 886 , & 859 to

provide a current return to ground via the power

175 860

supply filter capacitors

175 & 860 . The grid pulse

drive to G1 is protected by a low pass filter made up
of elements

856

856 and capacitor 878 also form a low pass filter for

855 , 871 , & 873 . Resistors 881 ,

855 871

878

873

881

the G2 to auto bright control output connection.

880

A dissipation resistor

880 is connected to the

focus spark gap to match the impedance of the
aquadag connection. This reduces reflections and
helps dissipate the arc energy. Resistor

879

879

supplies an additional ground path for arc energy.

G1 is connected to a negative voltage to increase the
cutoff voltage which reduces the dot size and produces a
sharper picture. This negative voltage is generated by
rectifying the negative peaks of the filament flyback
pulse with diode

872 . Resistor 872 is used to adjust the negative G1

870

870 , filter capacitor 868 , and resistor

872872

voltage for different FBTs. Resistor 876 provides a

868

876

fixed load to stabilize the -G1 voltage. The grid pulse is
developed across load resistor

874

874 by a PNP transistor.

The 120 volt line, which is also generated by the
filament voltage, is used to supply the video amplifier
output bias current. Capacitor 857 translates the GND

857

referenced filament flyback pulse to the 127 volt line.
Rectifier diodes

847 & 848 and filter capacitor 846

generate the V+ minus 7 volt supply. Capacitor 857 is

848847 846

857

also used to adjust this voltage for different FBTs.
The filament voltage is adjusted by capacitor 854

and diode (or resistor) 853 .
Resistor 859 and capacitor 860 decouples the video

859

853

860

854

amplifiers from the 127 volt line. This filter is needed,
in some models, to eliminate video amplifier distortion
caused by ripple current on the V+ line. This ripple
current is caused by the, V+ minus 7 volt line, power
supply.

70

CRT AUTO BIAS AND AUTO BRIGHT CIRCUIT, FUNCTION, DESCRIPTION.

The auto bias circuit is a control system that
forms a closed loop for controlling the CRT bias
voltage. It generates a set of conditions where
the current near the cutoff voltage of each gun is
measured, and then adjusts the bias voltage of
the video amplifiers, to set the correct black level
voltage for each gun. This color balance
adjustment is necessary, since each gun in the
color picture tube can have a different cutoff
voltage, which also, will change as the CRT ages.
If the picture tube gain changes, the auto

bias circuit would adjust all three guns in the
same direction to maintain constant black
level. This effect reduces the auto bias
voltage range which is needed for the cathode
differential voltage adjustment. To prevent
this occurrence a second control loop is added
to the system. This second control loop is
called the auto bright circuit and corrects for
CRT gain changes. The auto bright circuit
senses any common bias voltage change and
controls the screen grid (G2) to hold the
common bias voltage constant.

SIMPLIFIED PICTURE TUBE VIDEO BIAS CONTROL CIRCUIT: (One channel shown)

VIDEO

INTERFACE

+

Video
Amp.

R
G
B

CA3224E

4.0V

Beam

Current

Buffer

LM324

+

5K

200

C8

68.1K

Ω

.1uF

921

comp.

.047uF

Vsync

sync

H

927

Blue

input

A

B
C

SW

normal

V ref.

GREEN CHANNEL

RED CHANNEL
Counter, Decoder

Control Logic

Blue

hold

cap.

10uF

+

895

B

G

R

Grid pulse

Program Pulse

Auto Bright

33K

33K

33K

Amplifier

+

LM324

920

15.8K

*

4.0V

Adjust FBT bottom pot for 4.0V to 4.4 at pin 8.
Note: Chassis before rev. E4, set to 4.6V.

+4.2V

8

*

G1 G2

169K

900Ω

1.8K

CRT

FBT

Screen

adj.

TC 9

+6V

-21V

The auto bias circuit performs all of its
sensing and bias corrections during the
sixteenth to the twenty first horizontal cycle,
after the vertical sync pulse. Before the
sixteenth cycle, the SW in the auto bias IC is
open ( SW in "C" position).

During the 16,17, and 18 horizontal cycle,
the CRT is brought out of cutoff by the grid
pulse. The resulting beam current produces
a voltage at the beam current buffer output.
This voltage is applied to the coupling

921

capacitor

921 . At the other side of the

coupling capacitor is the channel input, which
is clamped to V ref. (SW in "A" position). The
voltage amplitude of the amplifier output with
the cathode current information is then stored
in the coupling capacitor 921 during this

921

time.

During the next three horizontal cycles (19,
20, and 21), the SW is switched to pass current
to capacitor 895 which is the bias voltage

895

storage capacitor. At the same time a
program pulse is applied to resistor

C8

C8

which, if the bias was correct during the
previous cycle, exactly balances the voltage
stored in the coupling capacitor and no
difference is sensed at the channel input. The
channel amplifier, in this case, does not
output current and the voltage of capacitor

895 stays unchanged.

895

If the CRT cathode is too far into cutoff, less
beam current flows at the grid pulse time.
This causes the beam current buffer to output
a smaller negative pulse and less voltage is
stored in the coupling capacitor. The program
pulse amplitude (which is constant) is now
larger than the stored (beam current) voltage
and the channel amplifier will add current to

8 95 thus

the, bias voltage, storage capacitor

895

correcting the low bias voltage which caused
the cathode to be too far into cutoff. After the
program pulse is over, the SW is switched to
the open position again and the next time the
bias voltage can be adjusted is during the
next vertical blank time.

71

CRT AUTO BIAS AND AUTO BRIGHT CIRCUIT DESCRIPTION.

The beam current feedback circuit uses a PNP video
transistor

954

954 to direct most of the beam current to the

auto bias circuit while passing the voltage waveform,
from the video amplifiers to the CRT cathodes. Diode

958 956

958 and capacitor 956 insure that no video waveform
distortion occurs. An additional benefit of this circuit is
that it protects the video amplifiers from the destructive
arc energy. Resistors 948 and 955 divide energy due

948

955

to CRT arcing, between the video amplifier transistors

954 . The

and the beam current feedback transistor
beam current is filtered by capacitor 941 and resistor

C10

C10 and is buffered by an operational amplifier, which

954

941

translates the beam current into a low impedance
voltage. This voltage is applied to a coupling capacitor

921 C8

921 through a 200 ohm resistor C8 .
The 200 ohm and the 68.1K resistor

C3

C3 forms the

program value which sets the black level voltage via the
action of the program pulse.
Capacitor 922 is used to stabilize the

922

transconductance amplifier which is used at the channel
input of the auto bias IC
the bias voltage of this channel in capacitor

927 . The auto bias IC stores

927

895 at pin

895

21. This voltage is buffered by an internal amplifier,
with output at pin 20, which is connected to the Blue
video amplifier bias control input.
Resistor 908 , 910 , and 911 are part of the auto

908

910

911

bright circuit. They are used to sum the bias voltage of
each of the three channels via a voltage node at the auto
bright amplifier, 920 pin 9. The resulting output
voltage then controls the screen grid via transistor 850 .
Resistor

881 protects the CRT grid from excessive

881

current during arcing. Capacitor

920

850

878 supplies a low

878

AC impedance to GND to insure that the CRT gain is
constant during each horizontal line. Resistor 858 and
914 defines the current gain of, and stabilizes, the auto

914

858

bright control loop.

Load resistor 909 eliminates crossover distortion from
the OP Amp.

909

920

920 . Resistor 852 and 856 protects the

856852

transistor and OP Amp. from damage due to CRT
arcing.
PNP transistor 928 is used as a voltage translator to

928

direct the grid pulse from the auto bias IC to G1. The
voltage on G1 is normally -15 to -27 volts depending on
which CRT is used. When the grid pulse at pin 11 is

933

low, the current from resistor
resistor 874 and produces a 10 volt pulse on the minus
G1 line. Capacitor 871 and resistors 855 & 873
protect transistor 928 from CRT arcing.

874

871

928

933 is conducted to

855 873

The auto bias IC (CA3224E) is designed for a supply
voltage of +10V and since the video amplifier requires
+12V, three diodes 903 , 905 , and 906 are used to
supply this IC. Resistors

C4 and C7 form a voltage

906905903

C7C4

divider which supplies the, auto bright, bias voltage to
the LM324

920

920 . The green and blue channel circuits

are identical to the red channel and are controlled by
the timing logic in the same way.
Refer to the waveforms at the bottom left of page 34
for the timing relationship. The vertical retrace boost
pulse, from the LA7838, (15KHz models) or the delayed
vertical sync pulse from the sync delay circuit (25 &
31KHz models) starts the 21 count auto bias state
counter. This pulse is applied to the auto bias IC
through resistor 891 . The negative going flyback

891

pulse which is used to heat the filament also supplies
the horizontal sync to the auto bias IC via diode
and resistor 888 . The grid pulse becomes active

888

884

884

between the 15 and 18 horizontal cycle and the program
pulse is active between the 18 and 21 horizontal cycle.
These two pulses in conjunction with the internal
control of the transconductance amplifier output switch
are what establish the timing for the measurement and
setting of the video bias.

CRT AUTO BIAS, VERTICAL SYNC CIRCUIT DESCRIPTION.

The auto bias vertical sync comes from from a buffer circuit
for 15KHz operation. For 31KHz operation this signal is
generated by a delay counter. For both cases, the vertical
boost pulse is "and" connected with the Vertical Osc. O/S to
provide flicker free operation and laser beam protection. In
the case of vertical deflection failure, the loss of the boost signal
causes the auto bias vertical sync to stop, which stops the auto
bias function, and blanks the screen via the vertical blanking
circuit, thus providing for laser beam protection.

PN2222

4

0Ω

100A

7

1

2

100

PN2222

200K

CS=.45"

383

Retrace Boost

+12

Hfo=15KHz

6.8K

099

510Ω

006

3

P

379

22K

384

+12
V

62K

62K

098

099

0Ω

CS=.74

389

200K

GND

Vertical Osc. O/S, LA7851 pin 16

201

Filament

1N4148

1
2

8,10,13

14

7
3

.1uF

101

006

CL 12
KL
NC

Vdd
Vss

CD4024

Autobias

CRT AUTO BIAS
VERTICAL SYNC

For Hfo=25-31KHz

1N4148

100

Delay

Q1

Q2
Q3
Q4
Q5
Q6Q7

GND

11

9
6
5
4

1N4148

1N4148

1N4148

028

220pF

091

2H Dly.

024

4H Dly.

025

8H Dly.

027

16H Dly.

15.8K

381

+24V

72

The vertical oscillator one shot (LA7851 pin 16)
supplies the start timing for the auto bias vertical
sync. This signal is conducted to the emitter of

379

379 by jumper 389 . The base of 379 is connected

to the retrace boost pulse by resistor divider
and 384 . Combining these signals in this way

384

089 379

383

383

produces a collector waveform which has the vertical
oscillator one shot timing and is dependent on the
retrace boost pulse.

For the 15KHz case, transistor

100

100 inverts the

vertical oscillator one shot signal to produce the

099

CRT auto bias vertical sync signal. Resistor
is the pullup and resistor 006 reduces the

006

099

chance of arc damage to the transistor.
For the 31KHz case, the vertical oscillator one

shot signal is directed to the clear of the 7 bit
counter

100

100 . This O/S time out must occur after

the autobias delay time out and come before the
bias active pulse from the CA3224E. When the
clear is low, the counter counts horizontal pulses,
by the clock connected voltage divider 099 and

201 . When the counter outputs ones at each diode

201

099

connected output, further counts are inhibited by

006

diode 006 and pullup 381 . This diode "or" signal

381

is also used for the CRT auto bias vertical sync.
The delay is set to locate the grid pulse generated
3 faint lines at the top of the screen with full
vertical deflection. Capacitor

091 produces a

091

delay to avoid a race condition between the counter
clock and the auto bias horizontal sync.

10K 1K

873 855

330pF

871

VIDEO

INTERFACE

+12V Line

Green &
Red BEAM
CURRENT

14

15

18

TC 10

V. Osc. O/S
V. Blanking

Filament Pls.

Bias active
Grid pulse
Program pulse

Vs7.8 to 8.8Vdc

8.4Vp-p 95uS

To CRT Grid #1

-15V to -27V

CRT AUTO BIAS AND AUTO BRIGHT SCHEMATIC.

1,000pF

956

FDH400

958

C7

2SA1370

954

C

11

5

+

Video
Amp.

Blue BEAM CURRENT

For XX92

2.74K

1.82K

C4

4K

C10

2,200pF

941

4K

C11

2,200pF
818

4K

C14

2,200pF

815

6

13

3

2

16

12

13

19

GND

1

+12V

1.8K

933

MPS2907

1.8K

874

1.8K

931

1.8K

955

1.8K

948

900Ω

C17

920

+

1/4

LM324

12

5K

C9

+

1/4

LM324

17

5K

C12

+

1/4

LM324

14

20

5K

C15

V. osc o/s or Delayed V. osc o/s

Grid pulse

9.6Vp-p 95uS

928

AUTO BRIGHT CIRCUIT

Adjust the bottom pot
on the FBT for +4.2V

8

920

15.8K

914

10

10

+

1/4
LM324

9

Blue video BIAS control line.

1N4005 X3

905 906903

3.8-

4.2V

7

Ω

200

C8

68.1K

C3

7

.1uF

921

.047uF

1

922

Ω

200

C13

68.1K

200

C16

68.1K

18

GND

C2

C1

Vs9 to 10Vdc

Ω

2.7K

884

5

4

1

.1uF

923

.047uF

924

.1uF

925

.047uF

926

22K

1N4148

+10V

.1uF

907

891

888

2,200pF

889

100K

852

3.3K

909

1.2-

2.5V

5.7-

6.3V

1.2-

2.5V

5.7-

6.3V

1.2-

2.5V

.2­.6V

2­3V

10

1/2W

2SC3675

850

TC9

169K

858

100K,

856

R

G

B

1N4005

+12V

090

2.2nF, 1KV

878

Beam current off on
power down circuit.

68.1K

085

127K

087

board at DD1.

G2G1

100uF

+

089

On main

FBT

2.2K

1/2W

881

CRT

+16V

AUTO BIAS CIRCUIT

AUTO BIAS IC

1

GND Vcc

22

CA3224E

927

2

320

4

input

Blue

sw.

normal

comp.
sw. in grid pls. pos.

Green input

sw.

Blue

hold

cap.

Green

hold

cap.

5

comp.

6

Red input

sw.

Red
hold

cap.

7

comp.

6V REF.

8

9

11

START

COUNTER

FFCLQ

GND

21 H. LINE

COUNTER

CL

DECODER

sw. control

GRID
PULSE

EN

BIAS

5V REF

AUTO

BIAS

ACTIVE

PROGRAM

PULSE

21

19

18

17

16

15

14

13

12

10uF

+

895

2.5-

6.7V

10uF

+

894

2.5-

6.7V

10uF

+

892

2.5-

6.7V

4.6-5.2VDC

To
Vertical
Blanking

4.2Vp-p 360uS

33K

908

Green
Video Amp.
BIAS.

33K

910

Red
Video Amp.
BIAS.

33K

911

ABA

TC 6

Vs2.2 to 2.7Vdc

73

Monitor, Block Diagram Review.

GAME

VIDEO

RGB

SYNC

V. & H.

3

SYNC

Interface

VIDEO

Interface

BLANKING

V retrace

Beam limit

M. gain

High temp. limit

VERTICAL

J

2

V

DELAY

VERTICAL

s

OSCILLATOR

HORIZONTAL

CONTROL

s

H

H. Pos.

Sync delay

On Video Board.

3

AB

F.B.P.

VIDEO

AMPS.

Bias

3

3

3

Auto

Bright

CRT AUTO

I

SYNC

F

BIAS IC

H. sync (FBP)
V. sync

CA3224E

Beam

3

Current

Feedback

G

Beam current

buffer

Program pulse

Grid pulse

E

VERTICAL

CONTROL &

OUTPUT

LA7851

I. V. Feedback

Driver

NO

LA7851

V. Size &

V. Ras. Pos.

K

M

PINCUSHION

C

3

LA7838

Output

G2≈290V

G1≈–20V

3

2 For Dual Focus

CRT

H

V

DY

EHT≈25KV

DY

H

D

Dynamic Focus
used only on Dual
Focus CRTs

Horizontal
Dynamic
Focus

H2

EHTG2

V+
Vertical
Dynamic
Focus

H1

2

P

L

+

H.H.

FBT

REMOTE

CONTROLS

ISOLATION

Transformer DOUBLER

(IN GAME)

DEGAUSSING

CIRCUIT

Z

+24V

74

(PCB)

QR

VOLTAGE

Raw DC

320V

V-

+52V to +129V

LOAD

T

-200V

FAULT

DETECTOR

Y

HORIZONTAL

Size Control

(VIDEO & DEFLECTION)

SWITCHING

REGULATOR

Shutdown

OVER
VOLTAGE
PROTECT

Sync

X

DIODE

Modulator

Beam Current

+16V
+24-27V
U

FBP

Regulator

Vertical Deflection

V

+12V

Supply

S

+12V

W

BLANKING, MASTER GAIN, AND FAULT CIRCUIT, FUNCTION, DESCRIPTION.

SIMPLIFIED GAIN CONTROL CIRCUIT:

+12V

1K

MASTER GAIN

485

HORIZONTAL BLANKING

FLYBACK PULSE

0VDC

56Vpp 62,D6

Vertical Bias O/S

Hs

BIAS ACTIVE

HIGH Z

+2.5V

3

2

SIGNAL
CONDITIONING
CIRCUIT

+2.5V

+

1/2

LM393

1

210

GAIN SELECT
RESISTORS

1K

062

VERTICAL BLANKING

VIDEO GAIN LINE

PN2222

072

6

5

1/2

LM393

+

210

1N4148

253

.047uF

207

VIDEO INTERFACE

C5346

241

3.6K

One of three input circuits.

FAULT CIRCUIT

To P/S OVP

BEAM CURRENT LIMITER

+6V

MPSA64

7

PN2222

D

036

071

+12V

200Ω

LM324

033

+

+7.5V

1/4

10uF

014

3

+3.4V

2

beam current

From FBT

High Temp.
Beam Limit

1N4148

018

+

Video
Amp.

Total

+12V

28.0K

020

100K

T

@ 25°C

To

CRT

180

Blanking in this monitor is accomplished by
reducing the video gain to zero during the
vertical and horizontal blank time. During
video time, the gain is set by the master gain
control which is located on the remote control
PCB. If the overall beam current exceeds
.75mA or 1.5mA (depending on model) for
more then ten frames, the beam current
limiter circuit will reduce the video gain to
protect the FBT. A high temperature sensor,
close to the FBT, will also reduce the beam
current if the high temperature limit (70°C) is
exceeded.

The fault circuit senses the temperature
or beam current line and will turn off the
monitor if either of these signals exceeds the
beam current shut off value. If an abnormal
condition exists in the monitor or the cooling
system of the enclosure fails, the high
temperature sensor will activate the fault
circuit at 80°C. The fault circuit is also
turned on when the beam current becomes
large enough to damage the FBT. This
condition will happen if the video bias supply
(V+ –9V) on the video board fails. An OP
Amp. is used to sense the fault condition and
a transistor is used to transmit the fault
signal down to the power supply.

The video P-P voltage amplitude at the
cathodes, is the video input signal
amplitude times the master gain control
setting times the video amplifier gain.
The gain select resistors set the maximum
video gain via the master gain line. For a
greater range of brightness, (highlighting)
the video system is allowed to supply high
peak video currents which could damage
the FBT if sustained. The beam current
limiter circuit insures that the long term
maximum beam current is not exceeded.

Horizontal blanking is achieved by
amplifying the flyback pulse (FBP) with
transistor 072 . Vertical blanking starts

072

as soon as the LA7851 starts the vertical
retrace sequence and is terminated by the
auto bias, bias active signal. A comparator
is used to sense the vertical bias O/S, at pin
16 of the LA7851, which goes low when
vertical retrace starts. Capacitor 207

207

holds the vertical blanking active, between
the vertical bias O/S pulse, and the bias
active pulse. When the bias active line
goes high, the capacitor 207 is reset and

207

vertical blanking ends, after the bias active
line returns to it's high impedance state.

75

BLANKING, MASTER GAIN, AND FAULT CIRCUIT DESCRIPTION.

The master gain control 485 is connected

485

to the video gain line through a 1K resistor

062

062 . The voltage range of the video gain
line is programmable via resistors 064 , 076
and solder bridges at S , T , & U .

S

064

UT

076

The solder bridges may connect resistors

244 245

244 , 245 , 258 , and 260 to the video gain

258

260

line. This arrangement permits a variety of
input signals and picture tubes to be used
with the same monitor PCB.

Horizontal blanking ( ) is added
to the gain line by transistors 072 . This

H

B

072

transistor pulls down on the gain line when
the flyback pulse is high. Capacitor 081 is
charged by diode 080 and resistor 093 such

080

081

093

that, as soon as the flyback pulse starts going
positive the NPN transistor 072 turns on

072

and horizontal blanking starts. The time
constant of capacitor 081 and resistors 078
and 093 is chosen such that the capacitor

093

081

078

will lead the FBP on the downward slope and
turn the horizontal blanking transistor off
just at the end of the FBP. This advanced
timing compensates for the turn off delay of
transistor 072 .

072

Vertical blank time is started when a low
going pulse from the LA7851 pin 16 causes
the output, pin 1, of the dual comparator

210

210 to go low. Capacitor 207 is discharged
through resistor 208 at this time. After the

208

207

end of the LA7851 pulse, the capacitor

207

207 holds the output, pin 7 of the
comparator, low until the bias active pulse
recharges the capacitor 207 through diode

253

253 . During the high time of the bias

207

active pulse, the comparator output pin 7 is
still low, because of the voltage drop across
the diode 253 . The end of vertical blank

253

time occurs when the bias active line
returns to it's high impedance state. The
capacitor 207 holds the charge from the

207

bias active pulse until the next vertical
blank time. The advantage of this type of
vertical blanking circuit is that, if the CRT
auto bias IC fails to produce a bias active
pulse, the screen stays blanked. This action
protects the CRT when the vertical
deflection system fails since the output of the
LA7838 boost pulse is needed for the CRT
auto bias vertical sync (CA3224E pin 8).

The video gain line will source up to 32mA
during blank time, which is the reason for
buffering the vertical blank comparator with
a PNP transistor 212 .
Resistors 251 and 252 supply a voltage

251 252

212

that is midrange relative to the LA7851 pulse
for maximum noise immunity.
Resistors 248 and 250 also supply another

248

250

midrange voltage for the bias active pulse
and the, vertical blanking, hold capacitor
207 to work against. Resistors 211 and

207

368

368 are used as jumpers.

211

The beam current limiter circuit uses the
base to emitter voltage of a darlington
transistor 036 to set the maximum beam

036

current. To sense the beam current,
capacitor 010 integrates the current pulses

010

produced by rectifying the high voltage
flyback pulses. The beam current is
converted to a voltage across resistor 009 .

009

This voltage is applied to a long time
constant RC circuit, resistor 011 and
capacitor 014 , before it is sensed by the

014

011

darlington transistor. The sharpness of the
limiting response is set by resistors 012 ,

065

and 066 . Transistor 071 then,

065

066

071

012

reduces the video gain by pulling down on
the master gain line upon excessive beam
current. The beam current is also reduced if
the FBT temperature sensor exceeds 74°C.
Resistor 020 sets the temperature at which

020

this circuit becomes active. The resistance
of thermistor 180 decreases with increasing

180

temperature until the voltage at the cathode
of diode 018 is low enough to turn on
transistor 036 which turns on transistor
071 and darkens the screen.

071

018

036

The fault circuit senses the temperature
or beam current line with a, comparator
connected, OP Amp. 033 at pin 2 (– input).

033

The + input of the OP Amp. is biased to
3 volts by a voltage divider, resistors 034

037

and 037 . The output of the, OP Amp. is
connected to a low pass filter, resistor 017
and capacitor 035 to insure that the fault

035

034

017

circuit does not become active on power up.

008

Transistor

008 conducts the fault signal to

the over voltage protect input of the power
supply IC. Resistor
translator transistor 008 and the power

005

005 protects the voltage

008

supply controller IC.

76

BLANKING, MASTER GAIN, BEAM LIMITER, AND FAULT CIRCUITS SCHEMATIC.

Remote control PCB

+12V

1K

485

GND

6.8K

251

2

2.3-

2.7V

1.8K

3

368

1.8K

252

(BIAS ACTIVE)

From auto bias IC pin 13

2-3VDC

4Vpp 63,C4

Vs

(VERTICAL BIAS O/S)

From LA7851 pin 16

4.5-5.3V
5Vpp 16,E5

Vs

VIDEO GAIN LINE

4-7VDC

4-9Vpp 61,B4

Vs

VERTICAL

BLANKING

MPS2907

7

212

4-7VDC

4-9Vpp 61,B4

Hs

HORIZONTAL BLANKING

LM393

210

1/2

1K

062

RC2

MASTER

GAIN

+12V

6.8K

250

6

1N4148

253

5

+

1.8K

248

0Ω

8

211

1/2

1

LM393

1K

208

+

4

.047uF

GND

207

PN2222

072

0Ω

077

GND

+12V

BEAM CURRENT
LIMITER CIRCUIT.

PN2222

071

75Ω

066

Power supply

controller IC

C5184

115

078

1N4937

080

GAIN SELECT RESISTORS

1K

1K

1.62K

012

065

S

260

MPSA64

OVP

TU

604Ω 1.21K

244

1.21K
258

D

036

14

245

+

10uF

014

1N4148

018

7-10VDC

61, C2

GND

high temperature comparator.

Shutdown

270Ω

081

093

12

1.62K

+12V

Temperature

Excessive beam current or

076

GND

28.0K

020

T

Sensor

2.7K

064

62K

011

CPR0432

180

+6V

+3.4V

(FLYBACK PULSE)

From FBT pin 8

0VDC

56Vpp 62,D6

M

GAIN

VIDEO INTERFACE IC

FBT

453

Return

12.1K

034

009

BEAM CURRENT

.1uF

15.8K

037

010

GND

FAULT
CIRCUIT

3

22K

1

017

200K

005

2

1/4
LM324

033

0Ω

109

Hs

C5346

241

EHT

LIMIT

100uF

+

035

0Ω

2SA1371

8

4

019

GND

008

77

Composite

Sync

VERTICAL AND HORIZONTAL SYNC CIRCUIT DESCRIPTION.

Vertical Sync
Horizontal Sync

{

Sync Interface
2 Comparators

For Interlaced Vertical Sync.

Vertical Sync To Horizontal Cycle Synchronization
and Composite Sync Decoder

+

To LA7851 pin 19
To LA7851 pin 1

Composite sync or separate vertical and horizontal sync
are buffered by two comparators in the sync interface
circuit. A vertical sync synchronization circuit is used to
insure a stable raster and functions as a sync separator.

Vertical Sync

7.15K

366

Horizontal

Sync

H

VC

1

GND

s

V

VC

2

364

1K

246

1.8K

325

0Ω

328

1.8K

331

s

Vertical
Sync

0Ω

Interlace (15KHz)

10uF

+

259

47nF

254

1.8K

257

+12V

22K

323

4

270Ω

326

5

6

270Ω

330

.14-.16V

GND

7

270Ω

327

1/4

LM339

+

1/4

LM339

+

12

0Ω

318

3

2

355

1

355

The synchronization circuit is bypassed, for interlaced
vertical sync, because this circuit rejects the half
horizontal line time variation used to generate the
interlaced vertical raster.

+12V

7.15K

364

6.8K

321

6.8K

322

Horizontal Sync

+

1/4

14

LM339

355

1.5-2VDC

+

1/4

13

LM339

355

200K

246

PN2222

255

100K

257

.047uF

318

GND

200K

256

9

8

59,D6

11

10

.05VDC

7V pp 60,C5

PN2222

33K

247

15.8K

353

1K

357

3.92K

356

Vs,Hs

254

FBP

354 360

2.1-2.4VDC

4.6Vpp 58,D6

358

15.8K68.1K

Hs

The sync interface comparators are biased to .15 volts,
by resistors 323 & 327 , to permit receiving low level

323

327

sync signals such as RS170. For low level composite
sync, the vertical and horizontal lines are tied together
and jumper 328 is left off. For normal amplitude sync,
(greater than 2.3 volts) resistors 325 & 326 form an

328

326325

attenuator to protect the sync interface comparators and
normalize the sync amplitude. This combination also
reduces noise sensitivity since the sync voltage amplitude
is low at the comparator input which slows the
comparator response and acts as a low pass filter.

For the interlaced sync case, the pullup resistor 321 is
left off and the voltage divider resistors 246 and 257 act

246

321

257

as the pullup. Also the vertical sync synchronization
comparators are disabled by changing the input resistors
to bias the comparators in the high output state and
resistor 366 is left off. Capacitor 254 acts as a sync

366

separator for composite interlaced sync. Capacitor 259
and jumper 364 are used to couple the composite sync to

364

254

259

the LA7851 vertical sync input pin 19.
The vertical sync synchronization window comparator

generates a pulse, a little after the midpoint of each
horizontal cycle. This pulse is shorted to GND by
transistors 255 except when vertical sync is active. The

255

two transistor circuit permits using either positive or
negative pulses for vertical sync.

Capacitor 318 couples the vertical sync pulses to
transistors 254 & 255 . When no sync pulse is present,
transistor 255 is turned on by resistor 246 . For a
negative vertical sync pulse, transistor 255 is turned off
by the negative pulse applied to resistor 257 and the

318

255

254

255

246

255

257

window comparator pulse is allowed to be the vertical sync
pulse. For positive vertical sync pulse, transistor 254 is
turned on by resistor 247 & 256 , which shorts the base
of transistor 255 to GND also allowing the window

255

247 256

254

comparator pulse to act as the sync pulse.
A sawtooth waveform is produced on integrating

354

358

353

360356

capacitor 358 by applying the flyback pulse to resistors

360 357

360 & 357 . This sawtooth waveform is connected to two
comparators which are biased by resistors 353 ,
356 , 354 , & 360 such that both comparator outputs are
high between 1.8 volts to 2.3 volts. This circuit would
produce a pulse on both the positive and negative slope
parts of the sawtooth waveform. Resistor 357 eliminates

357

the output pulse on the negative slope by introducing part
of the flyback pulse to pin 8 which keeps the comparator
from going high at this time. Resistors 364 & 366 act as

364 366

a pullup for the window comparator and apply a 6 volt bias
to the vertical sync input, LA7851 pin 19. At 6 volts, the
vertical sync input is inactive. It becomes active only
when the window comparator output and the ± sync
transistors are all high.

78

VERTICAL DEFLECTION CIRCUIT, FUNCTION, DESCRIPTION.

The LA7851 IC is used for the vertical oscillator. The LA7838 is a vertical deflection control
and high efficiency vertical yoke driver IC. Together they form a compact and efficient
vertical deflection system.

Vertical Sync

Vertical Oscillator

LA7851

Vertical

Linearity

Fine Tuning

6V

Vertical

Size

Clamp Enable Pulse

SIMPLIFIED VERTICAL DEFLECTION CIRCUIT

One

2

Shot

5V

*

Clamp

+6V

Ramp Control Circuit

375

403

*

Voltage on 401

Current

Source

46 7

1uF

401

Drive

388

Retrace
Booster

Output

LA7838

392

391

9

13
12

Voltage Feedback

390393

Current Feedback

+23V to +27V

Vertical

Yolk

+

449

385

Yoke Current

Yoke Drive

The vertical oscillator in the LA7851
supplies timing to the vertical deflection IC
to maintain a raster with no sync present.
Vertical sync supplies the timing when sync
is present.

The one shot in the LA7838 clamps the
ramp forming capacitor

401

401 to 5V during the

first half of vertical retrace.
The ramp forming capacitor is supplied with
current by a current source at pin 6. The
current source has a fixed 6 volt input voltage
at pin 4. A linear ramp is generated if a fixed
resistor is connected from pin 4 to GND.
Feedback from the yoke current, via resistor
403 , is used to modify the linear ramp which

403

helps correct for nonlinearity introduced by
the voltage feedback circuit connected to
pin 7. The vertical size control is connected to
the current source input since adjusting the
slope of the ramp adjusts the vertical size.
This ramp with the clamp, as the discharge,
produces a sawtooth waveform which is
connected to the + input of the vertical control
differential amplifier at pin 6.

The combination, voltage and current,
feedback circuit senses the parabolic
waveform on the yoke coupling capacitor

449

449 and is connected to the yoke current
sense resistor 193 . This circuit is then

385

connected to the other input of the differential
amplifier at pin 7. A capacitor

391

391 smoothes the parabolic waveform and a
voltage divider is used to set the output bias
voltage. The time constant, of the capacitor
391 and resistor 392 , is set to produce good

392391

vertical linearity. An additional linearity
correction circuit is added to fine tune vertical
linearity. This circuit can be set to add or
subtract deflection from the upper and lower
portions of the raster.

The differential amplifier controls the
power output stage which drives the vertical
deflection yoke. The retrace booster is
turned on when the ramp voltage is set to
the clamp voltage and is reset when the yoke
feedback voltage balances the ramp voltage.

79

VERTICAL DEFLECTION CIRCUIT DESCRIPTION.

378

LA7838

Vertical

Deflection

+12V

HEAT

SINK

12 34 567 8 910

Remote Control Board

Vertical

Size

Vertical

Raster

Position

RC3

500Ω

482

1K

483

RC8

RC6

750Ω

486

RC4

510Ω

004

0Ω

203

1,000pF

369

18Ω

+12V SUPPLY

367

VERTICAL SYNC

Vs

The vertical sync comes from the
synchronized vertical sync interface
circuit for monitors without interlace.
For monitors with interlace the vertical
sync comes from the sync comparator
via a coupling capacitor and bypasses
the synchronizing circuit. Pin 19 of the

1N4005

382

H.+12V

LA7851 is the vertical sync input and will
start the next oscillator cycle on either the
positive or negative sync pulse. The vertical

410

oscillator capacitor

410 discharges to 4 volts

on the leading edge of the vertical sync by the
action of an internal transistor and resistor.
Capacitor 410 is then charged by resistor
362 until the next sync pulse or to

362

410

8 volts, which ever comes first. The V. osc.
frequency is set low such that the adjustment
resistor 363 can be used to act as a vertical
hold adjustment. Solder connection V is

363

V

used to make this adjustment.

The vertical oscillator triggers the vertical
oscillator one shot, which outputs a pulse to
trigger the vertical sync input, pin 2, of the
LA7838. This one shot is also used to
synchronize the CRT auto bias IC.
Resistor 361 & capacitor 414 set the

361

414

timeout which must be longer than the CRT
auto bias Vs delay and shorter than the
vertical blanking. Resistors 370 & 408

370 408

supply the pullup for this one shot.

377

375

100uF

+

376

VERTICAL

Ramp

Reset

One Shot

out

Tr.

R/C

5.5-6.4V
3Vpp 21,D5

44.2K

402

See

Table

403

V.+12V

GND

5.5-6.5V

1.2Vpp 19,D5

Vs

or

20 19

V+

VERTICAL VERTICAL

± SYNC INPUT

.01uF

Ramp
Reset

Slope

Vs

374

CPC1058

out

Gen.

Ramp

1.2Ω, 1W

385

.1uF

410

VERT.

OSC.

V. size

Control

50/60Hz

5-6VDC

1.4Vpp 22,E5

Vs

1uF

401

365K

362

V

V. osc.

ADJ.

OSCILLATOR

Vert.

Drive

+27V

5.5-6.5V

1.4Vpp

68.1K

GND

388

2.2M

363

4-6VDC

2.8Vpp 18,D5

Vs

23,F4

393

392

+

391

127K

361

Vs

18 17

VERTICAL

OSC. O/S

Retrace

Booster

Drive

470uF

390

.01uF

414

.1-.3VCD

3.8Vpp 17,E5

The one shot in the LA7838 clamps the ramp
forming capacitor 401 to 5 volts for about half of
the vertical retrace time. Capacitor 374 and
resistor

402

402 form the RC circuit for the ramp

401

384

reset one shot.
The ramp capacitor 401 is charged by current

401

from a current generator with a 6 volt input node
at pin 4. The vertical size is adjusted by the

482

vertical size control
4 via resistors 003 & 375 . The adjustment
range is set by resistor 375 and the maximum
deflection is set by resistor 403 . A third input

482 which is connected to pin

003

375

375

403

to pin 4 comes from the vertical linearity circuit.
This circuit uses the above and below GND parts of
the vertical current waveform separately.
Transistor

411 conducts when the vertical current

411

waveform is below GND. This transistor’s emitter
is referenced to GND by diode

371 . The emitter is connected to the vertical

371

current waveform through resistor

406 and resistor

406

407 which is

407

adjusted for each tube and yoke combination.

380

Vs

80

VERTICAL DEFLECTION SCHEMATIC.

22-28V

.8Vpp 24,F7

Vs

Thermal Protection

Vert.
Out

Boost

GND

11 12 13

Vertical Linearity Circuit

V.+12V

DECREASES

TOP AND
BOTTOM

VERT. SIZE.

200K

412

I

D5

200K 200K

1N4005

382

1.5-2.7V

24Vpp 24,E4

Vs

0Ω

395

4.7Ω

396

.1uF

397

PN2222

1N4148

406

411

See

Table

GND

22K

370

4.5-5.3V
5Vpp 16,E5

Vs

15.8K

408

16 1415

GND

V. Ref.

LA7851

In similar manner, the positive half of the
vertical current waveform is conducted by
transistor 373 diode 405 , and resistors 372

404

and 404 . Both transistors 373 and 411 may

405373 372

373 411

be connected to pin 4 via solder connection H or
they may be connected to inverting transistor

409 and resistors 412 and 413 .

409

412

413

The inverting transistor is connected with
solder connection I and decreases the vertical

I

size at the top and bottom of the screen.
The ramp capacitor 401 is connected to a

401

differential amplifier at pin 6 and the negative
feedback from the yoke return line is connected
to pin 7. This negative feedback, which senses
the DC component of the vertical output voltage,
is also the current feedback for the LA7838. It is

388

made up of voltage divider resistors

390 + 393 and a wave shaping integrator.

390 393

The wave shaping integrator, capacitor
resistor 392 , is used as the primary vertical

392

388 and

391 and

391

linearity adjustment.

MPS2907

372371

PN2222

1N4148

405

1,000uF
35V

H

200K

D5

INCREASES

TOP AND
BOTTOM

VERT. SIZE.

373

See

Table

404407

+

449

196

Capacitor multiplier for the 2793.

+

270Ω

196

30Ω

198

1,000uF

119

413

409

H

.1uF

399

GND

2SC4159E

197

1N4005

199

2SC3467

RAS. POS.

V

0 TO 7 VDC

390Ω, 2W

421

12-16VDC

50Vpp 28,F6

420

100Ω
1/2W

394

Vs

YC1

426

YC2

427

VERTICAL

YOKE

The output of the vertical drive, differential
amplifier, is connected to the power amplifier
which drives the yoke. A booster circuit is
connected to the the power amplifier supply via
capacitor

380

380 and clamp diode 382 such that

382

when the booster is active, during vertical
retrace, the power supply to the vertical output
amplifier is doubled. Resistor

396

396 and capacitor 397 make up a high

397

frequency vertical output stabilization circuit.
The vertical output at pin 12 is connected to

421

the vertical yoke. Resistor

421 is a load resistor

across the yoke which stabilizes the vertical
deflection feedback loop. The yoke return is
decoupled by capacitor 449 and the vertical
current is sensed by resistor 385 . The vertical

449

385

raster position is adjusted by injecting current in
the vertical yoke return. This is accomplished
by transistor 420 , with emitter resistor 394 ,
and the V. RAS. POS. control 483 .

483

394420

A capacitive multiplier circuit is connected in
series with the 27 volt line, in the 27” monitor, to
reduce the ripple voltage due to beam current
variations. Transistor 197 conducts current

197

from the 27 volt line to the LA7838 deflection
supply input pin 8. Capacitor
196 and 198 form a low pass filter which is

198196

119 and resistors

119

connected to the base of this transistor. Diode
199 conducts the inductive current from the

199

vertical yoke during the first part of retrace.
A jumper at 196 replaces the capacitive

196

multiplier circuit in the chassis with smaller
CRTs.

81

HORIZONTAL DEFLECTION CIRCUIT DESCRIPTION.

+12V Supply

Remote
Control
PCB

Horizontal

Position

20K

484

56pF

352

7.3VDC

5.5Vpp 01,D6

Horizontal

Sync

Hs

RC7
RC4

1N4007

333

0Ω

202

3

17

220uF

334

1.8K

I1

3.92K

418

2.7K

2

+24V to 27V Supply

5.4-6VDC
11, E5

Horizontal

SYNC INPUT

1 64 52 3

8

I4

7

NEG.

12K

I2

I3

GND

Hs

IA

8.8K22K

I12

1,000pF-15KHz

12

PICTURE

POSITION

330pF-31KHz
330pF-38KHz

11

+

comp.

-

O/S

7.3-8.7V
4Vpp 02,D6

351

100uF

338

200Ω 2W

GENERATORTR.

-.2VDC

6.8K

I13

45K

I6

I PRA

416

1N4007

340

Hs

2.2K.5W

+

341

3.92K

417

DELAYED

SYNC O/S SAW TOOTH

Hs

9

25K

I5

6,10

+24V

7.3-8.7V
4Vpp 03,D6

56Vpp 62,D6

Vs 3-4VDC

330pF

350

GND

0VDC

1.5Vpp 04,E6

11

1

Hs

2SC4159E

342

1.4Vpp 05,E6

348

6,800pF-15KHz

3,300pF-31KHz
3,300pF-38KHz

12-18VDC

33Vpp 27,E7

337

GND

MULTIPLIER

BIAS

Hs 2.4-3.4VDC

0Vpp

+

1uF

347

18

1uF

+

344

Hs

06,E6

10K

I7

The functions of the horizontal control circuits are:

1. To provide the horizontal output circuit
with a stable frequency with or without
incoming horizontal sync.

2. To be able to adjust the picture position,
horizontally, with respect to the raster.

3. To operate stability through periods of
missing horizontal sync pulses.

4. To keep the picture from drifting within
the operating temperature range.

All of these functions except for the picture
position adjustment are accomplished by the
phase locked loop. Delaying the horizontal
sync with an adjustable timer produces the
picture position adjustment.

The horizontal sync input circuit (pin 1) will
trigger the picture position one-shot (O/S) on
either the rising edge, or the falling edge, of the
horizontal sync pulse. To accomplish the edge
triggering, the sync pulse is differentiated by
capacitor

352 into two short pulses, one for the

352

rising edge and one for the falling edge of the
sync pulse. Which edge is the trigger depends
on the bias voltage at pin 1. For positive edge
triggering, the bias voltage is set to 7.8 volts by
resistors

I2 and I3 . For negative edge

I2 I3

triggering, the bias voltage is set to 4.1V by
connecting

I 12 via the solder connection IA .

I12

IA

The picture position O/S clamps timing capacitor

351

351 to 8.2 volts until horizontal sync triggers this O/S.
The voltage on the timing capacitor drops at a rate set
by the horizontal position control 484 and resistor
I 4 . When the voltage, at pin 2, drops below 4 volts

I4

the delayed sync O/S is triggered and capacitor 351 is

484

351

reset to its clamped voltage. The delayed sync O/S
functions the same as the picture position O/S with the
exception that it is not adjustable.

The flyback pulse, connected to pin 4 through

I6

resistor

I6 , starts the negative slope of the saw

tooth generator. When the sawtooth wave, which is
produced by a current to capacitor 348 , drops to 3

348

volts, the sawtooth generator switches back to the
positive slope part of the wave till the next FBP.

During the active part of the delayed sync pulse,
the multiplier gates current to capacitor 346 which

346

is dependent on the sawtooth voltage at the
delayed sync pulse time. Capacitor

347

347 sets the

"0" voltage for the multiplier which is the average
value of the sawtooth waveform.

If the delayed sync pulse occurs when the
sawtooth is at a low voltage part of its cycle,

346

capacitor

346 discharges and the oscillator

frequency lowers. If the delayed sync pulse occurs
at the top part of the sawtooth wave no current
flows to capacitor 346 . This action, phase locks

346

the horizontal oscillator to the incoming sync
pulses.

82

19

20

100Ω

I11

2.2nF

343

Horizontal

Drive

Transformer

HORIZONTAL DEFLECTION SCHEMATIC.

1N4007

435

1.2Ω

434

2SC5690

433

GND

2

1

3
4

332

NO DVM

.9KVpp

Hs

27,G6

Video
Board

800

Fil.

Fil. Rtn.

Screen

FOCUS

EHT

To Yoke

TC11
TC12

170Ω

I14

+200Hz

16

E

I8

107V-127V

10.8-12V

10, E6

336

17

HORIZONTAL
OSCILLATOR

DISCHARGE

415

H. V+

9 107 8

LA7851

5.5-6.3V

Hs 5-6VDC

.2Vpp 07,E6

33K

13

.01uF

3.6Vpp 08,E6

14

1K

I8

345346

6,800pF-15KHz
3,300pF-31KHz
3,300pF-38KHz

The voltage on capacitor 346 controls the

Hs3-7VDC

7Vpp

H.Fo ADJ.

15

I10

680Ω

I16

+800Hz

G

I9

9.31K

Hs

09,E6

340Ω

I15

+400Hz

F

346

horizontal oscillator frequency via I8 . In the case
of missing horizontal sync pulses, the multiplier does
not sink current and flywheel capacitor 344 holds
the horizontal frequency constant. Resistor I7

344

I7

permits small rapid changes of the control voltage at
pin 7 for locking of the oscillator to horizontal sync.

The horizontal oscillator capacitor 345

345

charges to its upper voltage limit through resistors
I10 , I16 , I15 , I 14 , and 336 . This capacitor is

I14I15I10 I16

336

then discharged to the lower voltage limit through the
action of discharge pin 9 and resistor I 9 . The free

I9

running frequency (Hfo) may be adjusted by making
solder connections on the I PRA. (see page 65 for the I
PRA layout). In some cases where there are many
missing horizontal sync pulses, it is necessary to
adjust the Hfo closer than ±200 Hz. For fine tuning
the Hfo, resistor 336 is replaced with a pot.

336

The horizontal phase locked loop then consists
of an oscillator which sets the flyback timing.
The flyback pulse is then compared to the incoming
sync pulse and the difference voltage holds the
oscillator at the sync frequency.

The duty cycle of the horizontal drive transistor
is generated by comparing the oscillator waveform
against a fixed voltage. This fixed voltage is set by
resistors 417 and 418 .

417

418

451

452

452

To P/S

V-

FLYBACK

TRANSFORMER

10

6

EHT

1K

465

FOCUS

092

092A

9
8

7
5

SCREEN

Beam

4

Current

3

FIL.

2

1

453

GND

The horizontal output transistor 433 conducts

0Ω

467

433

about three amps of horizontal flyback
transformer primary current and deflection
yoke current. This transistor has a beta as low
as three. To supply the high base current, a
horizontal output transistor drive transformer is
used. The drive transformer 332 builds up

332

energy during the on time of the drive
transistor, 337 which is the off time of the
horizontal output transistor 433 . Capacitor
343 and resistor I 11 damps the drive

343

337

433

I11

transformer primary waveform. To reduce
power dissipated by the horizontal output
transistor during turnoff, a clamp circuit is
connected to the drive transformer primary.
This clamp consists of resistor 341 , capacitor

338 , and diode 342 .

338

342

341

The flyback transformer's main function is to
supply EHT to the CRT. It also supplies the
focus and screen grid voltages which are taps on
the EHT supply. There are three low voltage
secondaries. One supplies the filament
current, negative G1 voltage, and timing on the
video board. Another supplies sync and EHT
information to the power supply. The third
secondary drives the horizontal blanking circuit
and supplies sync for the horizontal PLL, the
horizontal width control, & the vertical sync
synchronizing circuits.

83

HORIZONTAL RASTER WIDTH CONTROL CIRCUIT DESCRIPTION.

The purpose of the horizontal width control is to:

1. Provide a convenient means for adjusting
the horizontal raster size.

2. Correct pincushion distortion in the vertical axis.

3. Correct horizontal raster distortion caused by
periods of high beam current.

The horizontal width control circuit is comprised of
two main parts; The control circuit and the diode
modulator (DM). The control circuit combines four
signals in the monitor to produce the width control
circuit. These signals are:

Horizontal size - - - - - ­Vertical current (Iv) - ­Vertical parabolic + Iv

4. EHT return on the FBT

Beam current - - - - - - -

H. Size Pot.1.
V. current feedback resistor2.
Vertical yoke return.3.

The diode modulator controls the horizontal yoke
current which affects the horizontal size. This is
accomplished by the diode forward current. In effect,
the diode shorts out the horizontal width coil to the
extent of the diode forward current during the previous
horizontal trace time. The current used to control the
diode forward current comes from the diode modulator
and is controlled by the control circuit and the
switching mode driver.

The horizontal size voltage from the remote control
PCB 490 is applied directly to the current node
(LM392 Pin 5) of the control amplifier by resistor 043 .

490

043

For pincushion correction, two separate signals are
used. The inverted vertical current waveform
(TP 34) and the yoke return waveform (TP 33). The
yoke return waveform includes a parabolic and linear
component. The inverse of the linear component is
added to the yoke return waveform to correct the
pincushion. The vertical current waveform (Iv) is
inverted by an Op Amp and resistors 029 and 051 .
Resistor 031 level shifts the inverted Iv to + 6V.

031

029 051

The (vertical parabolic + Iv) is AC coupled by capacitor

082

082 and resistor 038 and 040 . It is then

040038

amplified by an Op Amp connected as a voltage
follower. Resistor 038 protects the Op Amp against
arc related voltage spikes. Load resistors 050 and

053 prevent cross over distortion of the Op Amps by

053

038

050

using only the current source transistors.
The inverted Iv and (parabolic voltage +Iv) are added
to the current node of the control amplifier by resistors
041 , 042 , 030 , & 052 which then makes up the

041

042 030 052

pincushion correction signal.
The beam current from the FBT is converted to a

voltage by resistors 009 and is filtered by capacitor

010

010 . Resistor 097 then connects the signal to the

009

097

current node of the control amplifier, which
accomplishes the blooming correction function.

These circuits are designed around a virtual ground,
the +6 volt line. This line is generated by buffering a
voltage divider

021

Resistor

021 and capacitor 026 form the output filter.

022 023

022 and 023 with an OP Amp.

026

The power output stage of the horizontal width
control circuit is a high efficiency switching mode
driver. The FBT pulse is integrated by capacitor
through resistor 095 and level shifted by resistor 058

095

057

057

058

to produce a saw tooth waveform. See waveform block
TP 39. By connecting one input of the comparator, in
the LM392 049 , to this sawtooth signal and the other

049

input to the control amplifier a switched signal with a
duty cycle dependent on the control voltage is
produced at the output. Resistors 055 and 056 form

055

056

a voltage divider which limits the control voltage
amplitude to be within the sawtooth waveform.
Resistor 060 acts as a pullup for the comparator
output. Resistor 461 couples the power MOSFET 460
to the comparator. Capacitor 463 and resistor 464

060

461

463

460

464

are connected as a snubber circuit to reduces noise due
to rapid drain transitions.

When the MOSFET is on (gate voltage high)
current increases in inductor 458 and when the

458

MOSFET is turned off the current is dumped in to the
24-27V line through diode 462 . The magnitude of

462

this current, from the diode modulator, is determined
by the duty cycle of the MOSFET which is a function
of the control voltage.

Diodes 477 and 478 with current equalizing
resistors

477 478

475 and 476 rectify the flyback waveform

475 476

present on the GND referenced node of the
horizontal tuned circuit. This current is conducted

457

through inductor

456

456 and then is controlled by the driver circuit.
Diodes 477 and 478 are the diode modulator

477

457 and integrated by capacitor

478

diodes and the forward current which the drive
circuit controls is the current which determines the
turn on delay of the GND referenced node of the
horizontal tuned circuit. An increase in the current
of diodes 477 and 478 produces a greater delay in

477 478

the GND referenced node, and reduces the amplitude
of the flyback pulse at this node, which results in an
increased horizontal size.

Capacitors 441 and 442 are the primary

441 442

horizontal tuning capacitors and must be the specified
value for a given chassis horizontal frequency and
yoke combination for proper operation of the monitor.
Capacitors

439 are the diode modulator horizontal tuning

439

capacitors. Diodes 440 and 438 clamp the GND

437

437 and

440

438

referenced node voltage to GND. Horizontal linearity
coil 431 stores energy from the flyback pulse and

431

injects it into the horizontal yoke in the reverse
direction of the yoke current to decrease deflection at
the start of trace to balance the decreased deflection at
the end of the horizontal trace due to I R losses in the
yoke during trace time. Capacitor 432 and resistor
428 keeps the linearity coil from ringing after retrace.

428

2

432

The raster may be shifted by making solder
connections: left SL or right SR . The amount of the
shift is set by solder connections S1 , S2 , & S4 .
Inductor

447 permits only the DC current to pass to

447

the yoke return. Resistors

SL

SR

S1 S4S2

423 424 425

423 , 424 , & 425 define

the size of the shift together with the V+ plus 5V and
V+ minus 5V supplies. Resistor 189 supplies a load

189

on the V+ ±5V lines to avoid over-voltage of the filter
capacitors. Resistors 185 , 195 act as fuses to protect
the PCB in the case where both SL and SR

185 195

SL SR

connections are made.

84

+

V+(+5V)

V+(-5V)

Vert. Output

Vertical
Yoke

1,000uF

449

1.2Ω

385

.33uF

082

6V

FBT Pin 4

6V

009

I BEAM

.1uF

010

+6V

H. Width Adjustment

Range.

043

12.1K

045

H. Size
Control

GND

FBP, FBT Pin 8

HORIZONTAL RASTER WIDTH AND POSITION CONTROL SCHEMATIC.

Horizontal Raster Position Adjustment

0Ω

191

22K

189

4.7Ω

185

4.7Ω

195

H. S. +12V

10.0K

022

10.0K

023

0Ω

188

13

12

GND

SR

SL

+6V

4

1/4
LM324

11 100uF

14

033

+6 Volt
Source

68Ω 1W

425

150Ω 1/2W

424

270Ω

423

510Ω

021

+

026

S4

S2

S1

18Ω

063

+

12mH

447

+12V
Line

100uF

026

HORIZONTAL YOKE

HORIZONTAL WIDTH CONTROL

972

107V or 127VDC

250Vpp

120Vpp 32,F6

YC3

446

0Ω

430

Horizontal

Linearity

coil

431

20VDC

4VDC

200Vpp

30Vpp 35,H7

Min.Max.

Hs

457

50uH

458

0Ω

454

1nF

100V

463

460

Hs

470

1/2W

464

Min.Max.

Ω

Hs

H Size

428

432

Hs

H Size

4VDC
11Vpp

456

0Ω

194

10K

038

200K

040

5

6

Beam Current
Load Resistor.

097

GND

HS +12V

5

6

1/2

LM392

Amp.

8

4

.01uF

047

HS +12V

10.0K

1/4
LM324

033

Parabolic

Pincushion

Blooming
Correction.

.01uF

054

7

049

10.0K

029

7

5.6-6.2VDC
2-3.6Vpp 33,B2

Correction

044

44.2K

058

10K

055

095

10.0K

3.3K

050

031

6V

GND

Vs

9

10

1/4
LM324

3.3K

Pincushion

Correction

5.6-6.2VDC

1-1.7V 34,B2

041 030

See

6V

Q R

Table

042

1N4937

+24-27V Line

28.0K

1/2

LM392

Comp.

096

1

049

2

3

6.8K

056

2-2.5VDC

4.4Vpp 39,B3

Hs

057

10.0K

051

033

053

-Linear

462

2.7K

060

0Ω

8

Vs

See

Table

052

4-19VDC

27Vpp 36,J7

MTP

8N08

510Ω

461094

0.8-7VDC

12Vpp 38,J7

HORIZONTAL WIDTH DRIVE

YOKE

Matching

FR205

440

FR205

438

1.5KV 1.5KV

442

200V

444

200V

443

HER105 HER105

477

.68Ω

1W
475

20VDC

15Vpp

Min.Max.

478

.68Ω

1W
476

Vs

37,I6

H Size

100V

GND

Horizontal

Output

FBT Pin 10

YC4

445

441

.022uF

630V

437

439

85

DYNAMIC FOCUS CIRCUIT FUNCTION AND CIRCUIT DESCRIPTION.

Model 1793-31.5DF

12-18VDC

50Vpp 29,F6

1,000uF
35V

+

449

0VDC

1.6Vpp

1.2Ω, 1W

385

Vs

13-15VDC

3-5Vpp

Horizontal Drive
Transformer
CPT1505

2

1

YC1

426

YC2

427

Vs

31,F5

Vs

0Ω

502

332

3
4

VERTICAL

DEFLECTION

.33uF

500

1N4007

435

1.2Ω

434

YOKE

V+

1KΩ

501

NO DVM

.8KVp-p

433

1.00MΩ

504

2SC3467

191K

503

Hs

27,G6

0Ω

V+

452

H PLL
DM Drive

GND

OVP

P/S Sync

V-

Vs

509

36K

10

9

8

7

5

1

2.2MΩ

510

505

FLYBACK

TRANSFORMER

CPT1555

2,200pF

2.2MΩ

511

200KΩ

514

330pF

500V

515

GND

EHT

1/2W, CC

470Ω

13

520

FOCUS

#2 FOCUS

SCREEN

12

Dynamic Focus

11

4

0Ω

465

Beam Current

3

Filament

2

453

1KV

507

CPT1556

12

GND

1N4007

512

0.1uF

34

518

Hs

CRT

G1

Red Wire.

White Wire.

Screen Grid.

Vs

HORIZONTAL YOKE

Horizontal
Linearity &

250V

270Ω

517 1.6KV

Width coils.

516

.47uF

443

Horizontal Width Control.

(Diode Modulator)

.47uF

200V
444

.01uF

441

The dual focus CRTs require a waveform on the #2 focus grid. This voltage waveform is dependent on the
position of the beam on the CRT. The lowest voltage part of the waveform is in the center of the screen and the
highest voltage part of the waveform is at the corners of the screen.

The dynamic focus circuit produces a composite waveform which consists of the horizontal parabolic waveform
and the vertical parabolic waveform. This composite waveform is applied to the dynamic focus input, of the
flyback transformer, and produces a sharp picture on the dual focus picture tubes. Typically dual focus picture
tubes produces a sharper picture than the single focus picture tubes.

Dynamic Focus Circuit Operation: The vertical component of the dynamic focus circuit is derived by
amplifying the voltage waveform across the vertical yoke coupling capacitor. The horizontal component of the
dynamic to focus circuit is produced by applying the voltage waveform across the horizontal yoke coupling
capacitor to the dynamic focus transformer primary. This transformer steps up the horizontal parabolic
voltage from about 33V to about 300V to produce the horizontal component of the dynamic focus circuit.

Circuit Description: Transistor 509 amplifies the vertical parabolic waveform which exists across capacitor
449 . This waveform is coupled to the transistor base via capacitor 500 and resister 501 . The bias for this
transistor is generated by resistors
Note; Resister

505

505 is connected to the vertical feed back line and not to ground. The supply voltage for the

collector is produced by diode
The load resisters for this transistor are resistors
vertical parabolic waveform, is conducted through resister
focus input of the flyback transformer. Resisters

509

500

503

503 and 504 . The gain of this amplifier is defined by resister and 505 .

512

512 which rectifiers the primary flyback pulse and is integrated by capacitor 507 .

504

510 511

510 and 511 . The waveform on the collector, which is the

514 and through transformer 518 to the dynamic

514

514

514 and 501 provides arc protection for transistor 509 . The

501

501449

505

507

518

509

horizontal component of the dynamic focus waveform is produced by coupling the primary of the dynamic focus
transformer at 518 to the horizontal yoke coupling capacitors at 443 and 444 . Capacitor 515 provides a low

518

443

515444

impedance pass to ground for the horizontal parabolic waveform which is developed across the dynamic focus
transformer secondary at 518 . Capacitor 517 insures that there is no D. C. component across the
transformer primary. Resister 516 protects the dynamic focus transformer primary from overload.
The flyback transformer

518 517

516

453 couples the dynamic focus waveform to the #2 focus grid via an internal capacitor.

453

86

+24V

8

Vertical Booster Amplifier Circuit, Circuit And Function Description.

Monitors with vertical deflection current which exceeds

LA7838

Vertical

Deflection

Retrace
Booster

Drive

Thermal Protection

Vert.

Out

377

GND

Boost

910111213

2.2 Ap-p cannot be driven directly by the LA7838 vertical
deflection IC. The vertical booster amplifier circuit
reduces the output current of the LA7838 by amplifying
the vertical deflection current. The LA7838 is mounted
on the vertical booster amplifier circuit board to allow the
boosters circuit to be inserted at the output of the LA7838.

1.2Ω

.68Ω

385

605

TIP31A

609

4.7Ω

608

4.7Ω

607

606

2,200uF

449

+

3.3Ω

610

+

+24V

602

FR205

470uF

380

TIP31A

603

TIP32A

601

Vertical

Deflection

Yoke

604

#3
#2

YC2

1N4007

382

FR205

611

#1

YC1

NPN
603

NPN
602

PNP
601

E

604

C
B

E
C
B

E
C
B

605

607

606

Vertical Amp. PCB

CPB1615

612, LA7838

135791113

608

609

610

611

Vertical Booster Circuit,
Operation. The following
waveforms are taken from
the 2793-VGA monitor.
See waveform #1 for the
vertical deflection current.
Waveform #2 shows the
LA7838 output current.
Waveform #3 shows the
current supplied by the
vertical booster amplifier
circuit. These current
waveforms describe how the
vertical booster circuit
reduces the LA7838 output
current to a current which is
well within the specification
of the IC.

PCB View;
Foil Side.

Vertical yoke drive, voltage waveform.

#1

Vertical yoke drive, current waveform.

#2

LA7838 output, current waveform.

#3

Vertical booster, current waveform.

44Vp-p

3.0Ap-p

0.6Ap-p

2.4Ap-p

The output of the LA7838 is connected to the yoke by a 3.3Ω resister at 610 . It also drives the
bases of transistors 601 and 603 through 4.7Ω stabilization resistors. When the voltage drop
across resistor 610 reaches ±.7V the respective transistor (601 for -.7V & 603 for +.7V) takes

601 603

610

610

over most of the additional vertical yoke drive current.
The retrace booster pulse, from the LA7838 pin 9, is connected to the retrace booster capacitor at

380

380 and is also buffered by an NPN transistor at 602 . The output of the retrace boost is

connected to the LA7838 at pin 13 and to the vertical booster NPN transistor at
Diodes 604 and 611 conduct current, right at the start of retrace. This current is produced by

604

611

the energy in the yoke, from the end of the last trace. Diode 382 supplies the deflection current

602

382

603

603 .

to both the LA7838 and the booster amplifier circuits during trace time.
Stabilization capacitors 606 and 609 are not used at present, but may be needed with other

606

609

output transistors.

87

SIMPLIFIED POWER SUPPLY CIRCUIT, FUNCTION, DESCRIPTION.

OSC.

V+

Res.

Comp.

ENABLE

C5184

DRIVER

115

FET

136

V-

FLYBACK

DIODE

142

GND

137

+

SECONDARIES

166

When the FET is turned off, the stored
energy in the inductor continues supplying
current to GND. But in this case, the
current path is from V+ to GND, instead of
V-to GND. During this part of the cycle,
the current in the inductor is decreasing.

+52V to +127V

AC

line

User supplied
Isolation

Transformer

+

+

V-

(-200V)

GND

Error Amp.

V

REF.

The switching regulator includes the
power FET 136 which passes current from
V- to GND through the inductor

136

166

166 .

During the time the FET is on, the current
in the inductor is increasing and the
inductor is storing energy.

Under normal conditions, the current will decrease to zero and the voltage will ring.

FET drain voltage

Current in inductor Current supplying GND

LOAD

H Dy & EHT

VIDEO

Voltage across

Current in diode

137

142

Current from V­Current added to the +127V line

Flyback pulse

As can be seen from the waveforms, the
largest number of changes occur when the FET is
turned off. Also, the FET drain voltage switches
fast due to the high inductor current. To
minimize video interference from the power
supply, the power supply is synchronized to the
horizontal oscillator such that horizontal
blanking is coincident with the FET turn off time.

For the shorted +127V to GND condition, which also occur right on power up,

The C5184
IC. All of the control circuits that are
built into this IC work together to produce
one output signal, which is the FET drive
signal. This signal can take on many
shapes depending on the load conditions of
the power supply. The waveforms for
normal operation are shown above.

115

115 is the series regulator

the waveforms are:

FET Gate Drive

FET Drain Voltage

Inductor Current

The first FET pulse is a full on pulse
which causes current to flow in the inductor.
After the FET is turned off the current in
the inductor drops much more slowly than
normal since the inductor is discharging
into a much lower than normal voltage. If
the FET were turned on for full power in the

88

next cycle with current still flowing in the
flyback diode, a current spike of 6A would
occur, which is a power spike of 2,000W.
The reason for this is that the diode stores
charge when current flows which turns into
reverse current for a short time when the
voltage is reversed across the diode.

SIMPLIFIED POWER SUPPLY CIRCUIT DESCRIPTION.

The FET drive circuit avoids this problem
by sensing flyback diode conduction. If the
flyback diode conduction is sensed, the low
current start mode is selected. This mode
turns the FET on, to a current of .1A, for not
more than 4uS. If before or during the low
current FET on time, the flyback diode breaks
free, and the FET drain voltage goes down,
the flyback diode voltage comparator will
signal the regulator to permit the FET to be
turned on for a full power cycle. The cycle
after the last low power cycle in the waveform,
on the previous page, is an example of this
condition. The flyback diode voltage
comparator inputs are located at pins 12 & 13
of the C5184. The two resistor dividers ( see
next page ) J10 , J11 and J12 , 134 connect
the comparator across the flyback diode 142 .

J12 134J10 J11

142

The comparator enables the FET drive only
after a 10% voltage drop is measured across
this diode.

Another fault condition exists when the
FET exceeds 5A drain current. This
condition can occur if the oscillator frequency
is too low, the FET drain is shorted to GND or
V+, the transformer has a shorted secondary,
or the core is broken. In these cases the
voltage across the FET source resistor

137

137

exceeds 1.6V which is sensed by the over
current comparator at pin 11. If pin 11
exceeds 1.6V, the FET drive is set to 0V for
the rest of the cycle. In some cases, this
condition can produce an output waveform
which looks normal, but the voltage across the
load (+127V to GND) would be low or
unstable. A quick check for this condition is
to check the peak voltage across the FET
source resistor. CAUTION; Whenever
connecting a scope ground to V-, be sure that
the other scope probe or common grounded
devices are not connected to the monitor GND.

A 0-30 volt @ 1A, DC, isolated power supply
is a tool necessary for trouble shooting
CERONIX monitors. When trouble shooting
the power supply, it can be connected to V­and the +17V line to keep the power supply
running while checking the voltages and
waveforms to find the fault. Caution, do not
exceed 20 volts on the 17 volt line. It can also
be used to supply the GND to +16V line for
checking the horizontal circuit. If the
horizontal circuit does not work, the power
supply will chirp. Without the horizontal
circuit working, there is not enough load on
the power supply for transformer action to
keep the regulator IC +17V line up to the
minimum of +12V. A quick check for this
condition is to clip a 2-4K @ 10W power
resistor from GND to V+. If the chirping
stops, the horizontal is probably not working.

The heart of the power supply is the
oscillator which supplies the basic timing.
The FET drive is always low during the
negative slope of the oscillator or, when
synchronized, after the start of the sync pulse.
The low to high transition of the FET drive,
pin 10, is determined by the voltage at the
output of the error amplifier. If V+ goes up in
voltage, the error amplifier voltage goes up,
which then intersects the oscillator waveform
at a higher voltage and causes the FET on
time to start later and be shorter. This
negative feedback accomplishes the control
loop of the power supply.

The regulator IC has a built in reference
voltage which is used by the error amplifier
to set and hold the V+ constant. Solder
connections on the J PRA are used to adjust
V+ in steps of ±1.5V.

Most of the power supply fault conditions
cause the power supply to chirp because the
source of +17V for the C5184 is generated by
the power supply. A special circuit is built
into the C5184, which permits charging the
+17V line filter capacitor with only a very low
load from the C5184. This circuit turns the
rest of the C5184 on only after the voltage at
pin 15 reaches 17V. If the transformer does
not supply at least 12V to this line before the
filter capacitor discharges to 12V, the C5184
turns off. The reason for the audible chirp, is
that, the power supply is not full on for each
cycle which produces a frequency low enough
to hear. See the bottom waveform on the
previous page.

The over voltage protect ( OVP ) circuit,
when activated, turns off the regulator IC
until power is disconnected. This circuit is
connected to the rectified flyback pulse, which
outputs a voltage that is proportional to the
EHT. The circuit's main purpose is to protect
the user against excessive x-ray which is
caused by excessive EHT. The OVP circuit is
also activated if the monitor temperature goes
too high or if too much beam current is
demanded from the FBT. The purpose of the
last two functions is to protect the FBT and
the CRT from component failure on the main
or video boards.

89

SWITCH MODE POWER SUPPLY CIRCUIT DESCRIPTION.

Oscillator waveform without sync:

Oscillator waveform with sync:

FET drive, C5184 pin 10:

115

The series regulator IC

115 , controls

current to the monitor GND by pulse width
modulation. A PNP transistor

112

112 , has an

emitter current, that is directly proportional to

J1

the 127V line voltage due to resistor
adjustment resistors J13 & J14 . This

J13

J14

J1 and

current is transmitted to the power supply V­line, and is applied to a resistor J5 , J15 , &

J16

J16 . The voltage across these resistors is

J15J5

compared to a reference voltage by the error
amplifier. If the +127V line goes up the output
of the error amplifier voltage goes up.
The pulse width modulation, which controls the
+ 127V line voltage, is accomplished by turning
the FET drive on at some particular voltage
along the rising slope of the oscillator waveform.
This particular voltage is the error amplifier
output voltage. See waveforms above.

The FET drive is always off during the
negative slope of the oscillator, or just after the
sync pulse. Since the FET drive pulse is started
by the error amplifier voltage and terminated by
the end of the oscillator cycle, a control system
via pulse width modulation has been established.
The oscillator waveform is produced by charging
capacitor 102 with a constant current set by
resistor J7 to a voltage of 5V and then

102

J7

discharging the capacitor with double the
charging current to 2.5V. Adding the flyback
pulse, via capacitor 123 to this waveform

123

synchronizes the oscillator, since the oscillator
frequency is set below the horizontal frequency.
Resistors J2 , J4 and capacitor 108 limit the

J2

J4

108

error amplifier's AC gain, to hold the control loop
stable. Capacitor 107 holds the error amplifier
stable. Capacitor 110 reduces power supply

107

110

noise, but, if too large, will cause the power
supply to be unstable. The 127V line is adjusted
by making solder connections on the J PRA (refer

to page 65 for the layout)

and JD are used to raise the 127V line up to 4.5

JD

volts in steps of 1.5 volts. Connections JA and JB

. Solder connections JC

JC

JA JB

lower the 127V line as much as 4.5V.

The FET 136 works together with the
transformer 166 to provide a low resistance

136

166

current path from V- to GND. This low
resistance coupled with no large voltage times
current products is what makes the power
supply efficient. Resistor 137 provides a

137

means for sensing the FET current. In the low
current mode, it is used to set the 300mA current
and in the full on mode it is used to

Error Amp. V.

Fet Drive

With Sync

sense the max. current. Resistors 140 , 133
and capacitor 138 reduce power supply
electrical noise. Transistor

116

116 short the FET drive to V- when the

138

127 and diode

127

140

133

monitor is turned off to protect the FET from
conducting current with a still large drain
voltage. Resistors J10 , J11 , J12 and 134

J10

J11

J12 134

provide a means for checking flyback diode
142 conduction via a comparator. If the

142

comparator measures low flyback diode voltage
the FET is turned on to the .3A low current
mode. This mode is necessary for power up,
since initially the +127V line is 0V and no
reverse diode voltage exists. The over voltage
protect circuit, at pin 14, has a trip voltage of
8V and when it is activated, it shuts down the
power supply. The EHT is measured by
rectifying the flyback pulse, with diode 130 ,

130

from a secondary winding of the FBT.
Capacitors 125 , 124 and resistors 126 , J9

126 J9125 124

are connected as a low pass filter to smooth out
the simulated EHT voltage which is then
applied to the C5184 at pin 14. Resistor J8

J8

protects the IC current sense input from
voltage spikes and resistor 113 protects the

113

PNP transistor from momentary overvoltage
damage due to line spikes. Zener diode 181

181

protects the horizontal and video circuits from
overvoltage due to power supply failure. If the
+127V line exceeds 160V, the zener diode 181

181

shorts to GND the +127V line.

At the input to the power supply is a
voltage doubler which outputs between 240 to
425VDC depending on the AC line voltage. It
has a three amp fuse 146 to protect the PCB
traces, an inrush current limiter 159 to
protect the rectifier diodes 148 & 156 .
Capacitors 150 and 155 are used to reduce

150

146

159

148 156

155

diode noise from the monitor to the AC input.
For 220VAC operation the voltage doubler is
replaced by a full wave rectifier by adding
diodes 151 , 154 , capacitors 152 , 153 and
removing the jumper at 152 . 144 & 163
are the raw DC filter capacitors. Resistor J6

151 154

152

144

153152

163

J6

supplies the power supply start current and
resistors 143A and 143B balances the series

143B143A

connected filter capacitors for 220VAC
operation.

Caution! When working on a monitor with a
degaussing relay, 468 unplug the degaussing coil

468

to avoid causing the residual current relay to
close on a cold posistor. This can happen if the
24V line is energized by a external power supply.

90

2.2nF

CC1

CC2

150

FR205

148

2.2nF-230V

152

FR205

230V

151

REMOVE

FOR

230V

0Ω

152

2.2nF

155

FR205

156

2.2nF-230V

153

FR205

230V

154

+24V

.5A,240V

Relay

GND

468

0Ω

471

CC3

-1.5V -3V

2.33K

J13 J14

193K

J1

2SA1371E

1

112

10.6K

J5

J16

J15

JD

+3V

JC

+1.5V

260Ω

130Ω

11K

J2

2

23.2K

See

Table

105

106

62K

143A

36K

144

143B

0Ω

250V

114

163

7

8,14

90K

J6

100uF

128

Inrush Current Limit

C-200-7

159

25-.5Ω

158

Posistor

CPR0430
CPR0434

TR250-145U

160

Degaussing

Connector

162

Degaussing Coil

SWITCH MODE POWER SUPPLY SCHEMATIC.

V+ plus 20V ---Video Supply +24, 28V to Vertical Deflection.

V+ plus 5V---H. Raster Shift

V+ minus 5V---H. Raster Shift

JBJA

113

5

88K

J4

3.3nF

108

20

1N5954B

160V Zener

181

6.5-7.5VDC

41,D1

6.5-7.5VDC

.5-.8VDC

56pF

107

3.4-4.2VDC

.1-.5VDC

9

5.7-6.3VDC

250V

175

GND

16.3-19VDC

1

INPUT

ERROR

AMP.

2

INPUT

3

COMP.

4

Output

CONTROL &

FAULT SENSE

4uS

5

DELAY

6

Rx

4.67K

100K

6

1,000pF

27

110

5

3

4

56pF

J3

104

103

33.2K

J7

Osc.

7

Cx

102

8

+7.5VREF.

3-4VDC

3Vpp

47,D2

220pF

123

V- V-

0VDC

27Vpp 57,F1

Hs

SCOPE GND MUST

POWER

SUPPLY
LOW VOLTAGE
SECONDARIES

V+ MODIFIER

SECONDARIES

The degaussing coil drive
circuit may use a dual posistor

158

158 or a single posistor with a
shorting relay 468 . The off
current of the single posistor is
large enough to cause raster
movement when there is a

PC

differance between the line

1

frequency and the vertical

161

PC

2

3A Fuse

146

145

230VAC
120VAC

INPUT

sync frequency.

+16V, 18V to 12V Regulator.

167A

V+

+

100uF

120

1N4937

121

+15V

+17V

INPUT

Over

Voltage

Protect
INPUT

COMP.

OUTPUT

Current

SENSE

DRIVE

XRC5184

115

J PRA PINS:

POWER SUPPLY VOLTAGES REFERENCED FROM V-.NOTES:

VOLTAGE CURRENT CIRCUIT SUPPLIED DIODE

(V+)+20VDC

+

1N4937

55, E1

16
15

14

}

12
13

+

11

10

9

V-

J PRA

3,10,15,

17VDC
16VDC

24-27VDC
(V+) -5VDC
(V+)+5VDC

468

100uF

118

122

14.8-18VDC

132

18Vz

5.5-6.8VDC

3-5VDC
5Vpp

3-6VDC

0.1VDC
1Vpp 51,F1

1-4VDC

12Vpp

+

52,F1

50,E2

182

167

30Ω

139

149

0Ω

198A

+16V

+

1,000uF

171

V+

1N4937

141

12

.1uF

124

20

1.00M

17 18

14.7K

V-

J10

J11

12

1
2

8
5

9

From Fault Crcuit

16

1.00M

134

15.8K

J12

510Ω

J8

18Ω

133

D

1N4005

127

MPSA64

111

2,200pF

&19

131

NOT BE CONNECTED TO GND AND V- AT THE SAME TIME.

POWER SUPPLY CONTROL

7mA
500mA
350mA
150mA
150mA
60mA

VIDEO AND INPUT

V. & H. DEFLECTION
H. RASTER SHIFT - LEFT
H. RASTER SHIFT - RIGHT

1VIDEO BOOSTER

+

1mF

387

SMXFR

166

126

38.3K

J9

116

170

1N4937

169

GND

6
3

4

1N4937

168

10

3,300pF

125

2SK1446LS

136

13

0.33Ω
2W

137

100pF

129

141
170
168
121
122
167

1N4937

1,000uF

+

450

+28V

FR205

142

1N4148

130

No DVM

300Vpp 40,G1

HEAT
SINK

135

220pF

1KV

138

47Ω

1/2W

CC

140

V-

TP49, G1

FILTER CAP.

100uF
1,000uF
1,000uF

100uF

100uF

220uF

GND

128
171
173
118
120
174

91

OSCILLOSCOPE

Equipment Setup For Repairing The Model XX93 Monitor.

+17.1

DVM

No DVM

320Vpp

1-4VDC

12Vpp 50,E2

115

VAC

40,G1

0 to 30V 0 to 30V

ISOLATION

TRANSFORMER

ISOLATED

DUAL 1A DC

POWER

SUPPLY

VARIABLE

Test

Generator

or

Signal

Source

No.

LTR.No.

X

X

X­Y V

X-Y VDC

X-Y VDC

WAVEFORM

Sync.

TP-REF.Vp-p

CERONIX Model XX93

Legend Description

Represents the XX93 board part number. The parts list gives the

{

CERONIX PART NUMBER which is indexed to the board part number.

Part numbers of the resistors on the PRA indicated by LTR.

PRA pin number. To determine which PRA the pin number

{

belongs to, look for the nearest PRA part number on that line.

DC voltages are measured to GND except in the power supply
where V- is the reference. Use a DVM for DC measurements.

Test Point, board cross REFerence location.
The waveform is normally checked with a oscilloscope.

{

It has a P-P voltage amplitude of

CAUTION: When making measurements
on the power supply be sure that the other
scope probe is not connected to GND.

Vp-p

.

Measurements
are taken with

a white screen.

Hs - 5uS/div.
Vs - 2mS/div.

No
.

LTR.No
.

X

X­Y

X-Y VDC

WAVEFORM

TRANSFORMER

When all else fails,
connect 20 volts to the
power supply 17 volt
line and slowly
increase the AC
voltage up to just
before the the power
supply chirps. This is
called the smoke test.

LEGEND

BOARD PART No.
PART No. ON PRA.

X

X-Y VDC

Sync.

TP-REF.Vp-p

PRA PIN No.

DC VOLTAGE RANGE,

{

USING A DMM.

USE V. or H. SYNC.

AC VOLTS

Peak to Peak

Measured with scope

TEST POINT

ASS. REF.

92

Ausrüstung Gegründet Für Die Reparatur Des Monitors Des Modells XX93.

OSZILLOGRAPH

+17.1

DVM

No DVM

320Vpp

1-4VDC

12Vpp 50,E2

40,G1

115

VAC

0 to 30V 0 to 30V

LOKALISIERUNG

TRANSFORMATOR

LOKALISIERTE
DOPPEL 1A
GLEICHSTROM
VERSORGUNGSTEIL

VARIABLER

Prüfen Sie
Generator
oder
Signalquelle

No.

LTR.No.

X

X

X­Y V

X-Y VDC

X-Y VDC

WAVEFORM

Sync.

TP-REF.Vp-p

TRANSFORMATOR

Wenn ganz sonst
ausfällt, schließen Sie
20 Volt an das
Versorgungsteil eine
17-Volt-Zeile an und
erhöhen Sie langsam die

CERONIX Modell XX93

AC Spannung bis, kurz
bevor das
Versorgungsteil
zwitschert. Dieses wird

Legende Beschreibung

Dieses stellt die Teilnummer des Brettes XX93 dar. Die Stückliste gibt die

{

CERONIX-Teilnummer, die zur Brettteilnummer registriert wird.

die Feuerprobe genannt.

Teilnummern der Widerstände auf dem PRA angezeigt von LTR.

PRA Anschlußstiftzahl. Gehört, um festzustellen welchem PRA die

{

Anschlußstiftzahl, suchen Sie nach der nächsten PRA Teilnummer auf dieser Zeile.

Gleichstromspannungen werden gemessen, um ausgenommen in das Versorgungsteil
zu reiben, in dem V- die Referenz ist. Verwenden Sie ein DVM für Gleichstrommessen.

Prüfpunkt, Brettquerverweisstandort.

Die Wellenform wird normalerweise mit einem

{

Oszillograph überprüft. Sie hat einen P-P
Spannung Umfang .

VORSICHT: Wenn Sie Messen auf
dem Versorgungsteil bilden, seien Sie
sicher, daß die andere

Vp-p

Messen werden
mit einem
weiflen
Bildschirm
genommen.

Bereichprüfspitze nicht an Erden
angeschlossen wird.

Hs - 5uS/div.
Vs - 2mS/div.

No

LTR.No
.

X

X­Y

V

X-Y VDC

Wellenform

LEGENDE

X

X-Y VDC

Sync.

TP-REF.Vp-p

BRETTTEIL-Nr.

TEIL-Nr. AUF PRA.

PRA Anschlußstift-Nr.

GLEICHSTROM

{

{

Spannung

STRECKE MIT A DMM
VERWENDEN Sie V.- oder
H.-Synchronisierung.

Volt

Wechselstrompaek

zur Spitze.

Gemessen mit oszillograph.

PRüFPUNKT

ASS. REF.

93

POWER SUPPLY, TROUBLE SHOOTING TIPS.

SAFETY FIRST; Use only one hand when working on a powered up monitor to avoid electrical shock.

Always wear safety glasses.

Many of the failures that cause burnt
components and boards are eliminated by the
load sensitive switching mode power supply in
the CERONIX monitor. This feature can cause
problems with servicing the monitor if the proper
trouble shooting approach is not used. The
equipment setup, shown here, is necessary for
efficient trouble shooting of the CERONIX
monitors.

Problems that cause the power supply to chirp are:

1. Insufficient V+ line load.

2. Overloaded V+, +24V, or +16V lines.

3. Shorted V+, +24V, or +16V lines.

4. Power supply component failure.

5. Raw DC (V+ to V-) voltage too low.

A quick check for the insufficient V+ load is to

1.
connect a 2K to 4K ohm 10 watt power resistor
from GND to the V+ (cathode of diode 181 ). If the

181

chirping stops, proceed to check the horizontal
deflection circuit. First disconnect the board from
the AC supply. Then connect 16 volts to the 16V
line at the cathode of 169 . Also connect 24 volts
to the 24V line at the cathode of diode 168 and to
V+ at the cathode of diode 181 on the monitor.

169

168

181

Now the complete horizontal and vertical circuits
can be checked with the oscilloscope and DVM.
The flyback waveform will be about 170Vp-p
instead of 900Vp-p which permits checking even
the H. output transistor, collector, waveform.

For the overloaded supply line problems, the

2.
monitor power supply can be made to run
continuously by connecting the external power
supply to the 17V line. To accomplish this,
connect the external supply 0V clip lead to V­(resistor

137

137 lead by the power transformer) and

+20V clip lead to the monitor power supply +17V

141

line (cathode of diode

141 ). Sometimes the

monitor will operate normally in this mode, in
which case, watch for smoke and after a few
minutes of operation disconnect the power
connections and carefully feel around the
conductor side of the board for hot spots. Overload
conditions will not harm the power supply unless
there is a problem in the power supply. If the
power supply is suspect, read the

TEST section on this page. Next check the DC

POWER SUPPLY

voltage of each of the power supply outputs. The
overloaded line will have a lower than normal
voltage reading. The defective component can be
located by measuring the voltage drop along the
trace of this line.

3.

If the V+ crowbar zener 181 is shorted, a fault

181

exists in the power supply which permitted the V+
line to exceed +160V. First replace the zener.
Never operate the monitor without the crowbar
zener installed. Then read the

TEST section on this page. Shorts on the V+, 24V,

POWER SUPPLY

and 16V lines other than the crowbar zener are not
likely to be connected to the power supply even
though the power supply chirps. By operating the
power supply with the +20V external power supply
many of these problems can be found using the
same procedure as are used in trouble shooting
monitors with linear power supplies.

The power supply may chirp if:

4.
The transformer core is broken or a

winding is shorted.
The .33 ohm current sensing

resistor value is too high.
The +17V line is open. (goes away

when external. PS is used)

There is a line voltage range of about 60% to

5.

70% AC line voltage where a correctly
operating monitor will chirp.

POWER SUPPLY TEST

To verify that the power supply is working
correctly, connect the 17V line, as indicated in
section 2 on this page. Also connect the
oscilloscope GND to V- and the oscilloscope probe to
the FET drive (anode of diode 116 ). There should

116

be a waveform at this point. If there is no FET
drive waveform, check the voltages and waveforms
on the C5184 pins and compare them to the
voltages and waveforms on the schematic.
Connect the AC power cord with the AC voltage,
from the variable transformer turned down to 0
volts. TAKE CARE NOT TO TOUCH THE
OSCILLOSCOPE AND MONITOR CHASSIS
DURING THIS TEST, SINCE THE VOLTAGE
DIFFERENCE CAN BE AS HIGH AS 400 VOLTS.
Connect the DVM to GND and V+. Slowly
increase the AC line voltage and observe the power
supply response. Do not exceed +145V on V+. If
the monitor runs normally, a fault may still exist
in the power supply +17V line circuit. Note; if
the crowbar zener is shorted and the FET is
internally shorted, the C5184 IC 115 should also

115

be replaced.

94

Trouble Shooting Handbook
The information that is written in this handbook is to help repair XX93 Monitors.

Here is a guideline in which this handbook will follow:

1.

2.

3.

4.

5.

Color problems.
No video with power.
No V-H sync.

Retrace lines.

No power.

Always wear safety glasses.
Caution; Use only one hand

when working on a powered up
monitor to avoid electrical
shock.

Color Problems.

A helpful hint when working with color problems is by identifying the
color of the three grid lines at the top of the screen.

When there is a missing color and the lines are white the problem lies in the video
interface section. This means it can be found between the customers game and pin 8 of
the Video Amplifier (K-Film). If the lines are not white it would be a output problem,
which is anything after pin 8 to the picture tube.

If the problem is excessive blue, green, or red background color,
tap on related K-film to see if it is defective.

If blue is the problem, check for damaged traces around the outside of
the video board, since most of these traces go to the blue K-film.

If monitor shuts down due to excessive color, disconnect the filament for
voltage tests. (Desolder CRT socket pin 9.)

Note: All voltage measurements are: DC with -lead to GND unless other wise noted.

Problem Tests Probable Solution

Missing

Check voltage on 75Ω input

1.
resistors

288 286 284

,, &.

If 0V to .05V, check video
connector and drive electronics.

Color.

241

Refer to the
schematic for
the specific pin
numbers of
each color.

Pins, listed in

table, are in

order of Red,

Green,

and Blue.

Tests should
preformed in order
to reduce chance of
replacing wrong
component.

If voltage, IC

2.

241 pins 16, 13, or 9

less than 7V & K-Films pin 1>8V.
If voltage, K-Film pin 1 is 10V and

3.
IC 241 Pins 1,15, & 8 are .3 to.7V.

If voltage, K-Film pin 1 over 10.6V

4.
Desolder pin 1. Make open to trace.

Color may be tested by connecting a clip
lead to GND and a 1.62KΩ resistor.
Contact the resistor to K-Film pin 1.

If voltage, K-Film pin 20, different

5.
than voltage at CRT socket pin.

If voltage, K-Film pin 20 is

6.
over 115V.

Arc

suppression

diodes:

Red
Green
Blue

835 899

845
886 959

Check for open between IC and
associated K-Film.

Ohm gain resistors at pins, if OK
replace video interface IC

If pin 1 over 10.6V, replace K-Film.
If pin 1 is 10V, replace the diode of

213 086 084

missing color

,, &.

If still missing color, replace IC

Resistance between these two
points should not exceed 1.1KΩ.

First replace, for shorted arc
suppression, diodes of affected color.

Then try replacing the K-Film.

849

If not solution, change the
transistors in the amplifier.

241

241 .

241

241 .

95

Problem Probable Solution

Turn down M. Gain.

Excessive

color.

Turn down
G2 (bottom
pot of FBT)

1.
Measure voltage of K-Film pin 1

for each color. If affected color
has a .3V difference then others
Desolder pin 1. Make open to trace.

2.

Measure voltage across cap. 846 .

if excessive

color is too

Tests

846

If pin 1 still different
replace K-Film.

If pin 1 voltage same as others,
replace IC .

241

If this voltage is less than 5V,
check filament pulse. If OK
replace capacitor

bright.

3.

Refer to the
schematic for
the specific pin
numbers of
each color.

Tests should
preformed in
order to reduce
chance of
replacing
wrong
component.

Turn up M. Gain.
Measure voltage,
of affected color,
base to emitter:

4.

Ohm check,
CRT socket.
pin of effected
color to pin 12.

5.

Measure voltage, of affected color,

Red
Green
Blue

Red, pin 8
Green, pin 6
Blue, pin 11

K-Film pin 4.

837

842
954

If the voltage is greater than .7V
or 0V , Replace the transistor.

If resistance is below 2K, replace
the CRT socket.

If voltage is 3-8V replace the
2SC3467 & the PNP transistor pair.

If voltage is less than 2V replace
PNP transistor connected to pin.

857

857 .

Problem Probable Solution

1.

No Picture.

Check that the
master gain pot
is turned up.

Note; Blanking should be > 5V.
Measure blanking voltage on

215

jumper

215 . If .6V to 1V check

vertical output for waveform.

2.

Check light from filament.
If no light check FBP before and
after capacitor

Measure voltage on Blue K-Film

3.

pin 7. This voltage should be 9.3V.

Measure G2 voltage on

4.
CRT socket 877 pin 7.

877

Tests

854 .

The vertical booster pulse supplies
part of vertical sync to the auto bias

927

927 . With no sync to pin 8 of

IC

927

927 , vertical blanking is not reset.

If FBT waveform is the same on both
sides of the filament adjustment cap.

854854

854 , ohm out the filament circuit.
If this voltage is over 10V, replace

transistor 942 .

942

If this voltage is under 100V, check
that the FBT bottom pot is turned
up. Replace CRT Socket if GND to
G2 is less than 100KΩ.

Measure voltage on LM324 920

5.
pin 8.

Problem Probable Solution

1.

No

Sync.

Tests should
preformed in
order to reduce
chance of
replacing wrong
component.

Vertical osc. frequency adjustment;

2.

Check H. free running freq. (Hfo)
Check sync waveforms at input of

3.

LA7851. Hs=pin 1, Vs=pin 19.

4.

Check voltage, LM339,
Normal range is 5V to 7V.

Tests

920

355

355 pin 14.

If this voltage is 9-11V, replace the
C-Film 917 and or LM324 920 .

917 920

Add or remove V solder connection. p30
If out ±500Hz of sync, adj. Hfo.

If input sync to the LA7851 is OK
and picture roles replace IC

Also should check other voltages in this circuit.

If outside range replace IC 355 .

415

415 .

355

p75

96

Problem Probable Solution

1.

Retrace

Lines .

Turn down M. Gain to minimum.
Measure voltage, auto bias IC 927
pins 2, 4, & 6 for 5.5V to 6.5V.

Also measure voltage, pins 3, 5,

Tests

927

If any of the voltages are
not in the listed voltage
range, replace IC 927 .

& 7 for 1.1V to 2.7V

927

2.

Measure voltage, LM324 920
pin 5. Should be less than 4.5V.

920

connection) & pin 5 voltage is 4.8V
add a 7.15K resistor pins 8 to 11.
Otherwise replace C-Film.

If old style C-Film (no solder

215

3.

Check video gain line (J
scope sync on Vs

215

331 , .2mS/cm,

and verify V. & H. blanking.

Problem Probable Solution

Monitor

Shuts

Down.

1.

2.

If shutdown right after power up.

3.
Disable shutdown; clip V- to 109 .

4.

Problem Probable Solution

1.

No

With power applied, check voltage
ground to (V-) anode of diode

Tests

019

Tests

215 )

109

156

156 .

If either V. or H. blanking is
missing, go to that circuit for
further tests.

Check voltage across cap. 846 5-10VIf screen turns bright & shutdown.
Check V+, Hfo, & EHT at power up.

If solution, check fault circuit.Disable fault; clip 019 to GND.

Measure EHT,

should be less than 27KV.

If 0V to 100V, ohm out fuse 146 &

inrush current limiter 159 25Ω to .5Ω.

Power.

Measure voltage, V+ line is 0V &

2.
PS chirps

Ohm out crowbar zener diode 181 .
Also ohm out H. output Xsr 433 .

846

146

159

181

433

If fuse is blown.

3.
Ohm out 160V crowbar zener

If the power supply chirps and

4.
high voltage can be heard.

If the power supply chirps, check

5.
for shorted secondary voltages by;

Disconnect power to chassis.
Apply external DC PS to 16V

line at cathode of diode
Apply second DC voltage to 24V

line at cathode of 168 .

168

FBT Check at low voltage;

169

169 .

181

181 .

If the zener is shorted and the fuse

115

146

146 ,

136181

is blown, replace fuse
zener 181 , power FET 136 ,
and the C5184 IC 115 .

Ohm out the 17V line; V- to anode

141 139

of

141 , 141 , 149 , 139 , 132 ,

149141

J-Film pins 8-14 & IC

First, ohm out diodes;

132

115

115 pin 15.

142 168

142 , 168 ,
169 , 181 .

169 181

If PS current less than .5A and 12V
line=11.5V to 12.5V, go to next test.

If PS current less than .3A, line OK.

433

Check base of H. output

433 for

drive waveform. If OK connect 24V
line to V+ line and check flyback
waveform at collector of

433

433 .

(Without H. deflection load, PS
chirps) If large and small pulses
observed, replace the FBT.

97

Filament Voltage Test.

When replacing either the flyback transformer or the video
board, the filament voltage may not be correct.

Measuring the filament voltage is not accurate using a true
RMS voltage meter, because of the high frequency components,
which make up the filament voltage. An oscilloscope, with RMS
capability, may be used to measure the filament voltage.

Although a visual check of the filament color is a indicator of the
filament voltage, it is a good practice to check the filament voltage if
there is any doubt about this important monitor parameter.

The following filament voltage test is an accurate method of
finding the true RMS voltage to the filament. This is accomplished
by comparing the light output of the filament when it is driven by
the monitor to the light output of the filament with an applied DC
voltage using a loaded photocell.

62K,912

0Ω, 902

250V

RED

H400

899

.015uF

901

900

903

1N4005

470Ω, CF

G2

6

GREEN

5

G1

1K

CF

855

0Ω, 904

905

8

0Ω, 898

7

RED

1N4005

9

8

7

6

5

877

1N4005

FIL.FIL.

0Ω, 896
0Ω, 897

10

9

CELL

906

18Ω, 879

10

BLUE

11

12

1

CRT

10uF

895

2.2nF,889

11

GAPS

GND

SOCKET

XX93

Video Board

+

12

SETUP:

62K,852

10
11

13
14

205Ω

15
16

17
18

19

20

470Ω, CF

FR205

853

.033uF, 854

100K, CF

To find the filament voltage;

1. Solder two short buss wires to the filament pins to clip on.

+

10uF

0 to 30V 0 to 30V

+6.30V

DVM

+

ISOLATED

DUAL 1A DC

POWER

SUPPLY

++

.150V

DVM

24.3K

98

2. Use black tape to secure the photocell over the hole in
the plastic CRT socket connector. Caution: Be sure
not to move the photocell between the two tests.

Record the DC voltage output from the photocell with the monitor running normally.

3.
The monitor should be powered up for 10 minutes before making this measurement.

4.

Turn off the monitor.
Connect the variable voltage, 1 amp, DC power supply to the filament.

5.
The negative lead to the filament ground at the CRT socket pin 10.

Adjust the power supply voltage for the photocell reading, recorded in step 3.6.
The equivalent filament RMS voltage is now recorded by measuring the DC voltage

7.
at the CRT socket pins 9 and 10.

HeizfadenSpannung Test.

Wenn der EHT-Transformator oder die Videokarte geändert wird, kann
die Heizfadenspannung falsch sein.

Die Heizfadenspannung besteht aus Hochfrequenzbestandteilen. Genaues Messen
der Heizfadenspannung kann nicht mit einem Effektivwertmeßinstrument erhalten
werden. Ein Oszillograph mit Effektivwertmessen-Fähigkeit kann benutzt werden,
um die Heizfadenspannung zu messen.

Obgleich ein Sichtprüfen der Heizfadenfarbe eine Anzeige der
Heizfadenspannung ist, ist es gutes üblich, die Heizfadenspannung zu
überprüfen, wenn es irgendeinen Zweifel ¸ber diesen wichtigen
Monitorparameter gibt.

Der folgende Heizfadenspannung Test ist eine genaue Methode des
Findens der zutreffenden Effektivwertspannung zum Heizfaden. Dieses
wird vollendet, indem man die helle Ausgabe des Heizfadens vergleicht,
wenn es durch den Monitor zur hellen Ausgabe des Heizfadens mit einer
angewandten Gleichstromspannung mit einer einprogrammiert Fotozelle
angetrieben wird.

62K,912

0Ω, 902

RED

H400

899

.015uF

250V

901

900

903

1N4005

470Ω, CF

G2

6

GREEN

5

G1

1K

CF

855

0Ω, 904

905

8

0Ω, 898

7

RED

1N4005

9

8

7

6

5

1N4005

0Ω, 896

0Ω, 897

9

877

CELL

10

FIL.FIL.

906

18Ω, 879

10

BLUE

11

12

1

CRT

10uF

895

2.2nF,889

11

GAPS

GND

SOCKET

Videokarte

+

12

XX93

+

10uF

0 to 30V 0 to 30V

+6.30V

DVM

+

KONFIGURATION:

10
11

13
14

205Ω

15
16
17
18
19

20

470Ω, CF

62K,852

FR205

853

.033uF, 854

100K, CF

LOKALISIERTE
DOPPEL 1A
GLEICHSTROM
VERSORGUNGSTEIL

++

.150V

DVM

24.3K

Die Heizfadenspannung finden;

Löten Sie zwei kurze bussleitungen zu den Heizfadenanschlußstiften weich.1.

2.

Benutzen Sie schwarzes Band, um die Fotozelle über der Bohrung im
Plastik-CRT-Einfaßung Stecker zu sichern.
Vorsicht: Seien Sie sicher, die Fotozelle nicht zwischen die zwei Tests zu
verschieben.

Speichern Sie die Gleichstromspannung, die von der Fotozelle mit dem

3.
Monitor ausgegeben wird, der normalerweise läuft. Der Monitor Muß
laufen damit 10 Minuten die Heizfadenspannung messen.

4.

Drehen Sie weg den Monitor Ab.
Schließen Sie die variable Spannung, 1 Ampere, Gleichstrom-Versorgung zum

5.
Heizfaden an. Das Negativ führen zu den Heizfaden, der am CRT-Einfaßung

Anschlußstift 10 gerieben wird.

Stellen Sie die Versorgungsteilspannung auf das Fotozelle Messen ein, gespeichert

6.

in Jobstep 3.

Die gleichwertige Heizfadeneffektivwertspannung wird jetzt gespeichert, indem man die

7.
Gleichstromspannung an den CRT-Einfaßung Anschlußstiften 9 und 10 mißt.

99

SETUP AND CONVERGENCE PROCEDURE

Use a knife to brake free the magnetic rings

1.
on the yoke, which are usually locked with
red varnish. Bring the adjustment tabs on
each pair of magnetic rings in line for the
starting point.

Loosen the yoke clamp. Remove the yoke

2.

wedges and the tape from the CRT.

3.

Connect a test generator to the video input.

Adjust the yoke position, on the CRT neck,

7.
to the center of purity. One way to locate
this yoke position is to make a felt pen mark
on the CRT neck at the rear extreme of
purity and another mark at the front extreme
of purity. Make a third mark between the
two marks and set the yoke to this position.
Rotate the yoke to line up, the raster top line,
with the top of the picture tube. Tighten the
yoke clamp. Tilt the yoke side to side and up
and down while watching the red field to
verify that purity is good.

Turn the monitor on. Switch the test

4.
generator to red field. Adjust the horizontal
and vertical raster size, on the remote control
board, for under scan. Let the monitor run
for at least half an hour.

Check the auto bright control voltage with a

5.
DVM. Connect the DMM to GND and pin 8
of the LM324

920

920 on the video board. The

voltage range is 4.0V to 4.4V. If out of
range, adjust this voltage to 4.2V by using
pliers to rotate the bottom knob on the FBT.

Degauss the picture tube and front part of

6.
the frame.

CAUTION: To avoid electrical shock,
take care not to touch the yoke conductors or
push against the anode cap.

Always keep one hand free to avoid making a
complete electrical circuit.

8. If the yoke position adjustment does not
produce good purity, adjust the purity
magnets. Tabs closest to the yoke winding.

Switch the generator to the red/blue grid.

9.
Adjust the 4 pole magnets (center pair)
for convergence of the red and blue guns in
the center of the screen.

Tilt the yoke up and down for the best

10.
convergence around the edge of the grid.
Insert the top yoke wedge. Tilt the yoke side
to side for the best convergence around the
edge of the grid and insert the rest of the
yoke wedges. Secure the wedges with tape.

Switch the generator to the white grid.

11.
Adjust the 6 pole magnets (Pair closest to the
video board) for convergence of the green
gun. Step #10 and this step may have to be
repeated for optimum convergence.

100

If the corner convergence is still not

12.
acceptable, shunts may be used to correct
this problem.
Shunts are available from CERONIX.
Shunt order number is CPM2011.

SETUP UND KONVERGENZ PROZEDUR

1.

Benutzen Sie eine scharfes Messer, um die
magnetischen Ringe auf dem Joch frei zu
bremsen, die normalerweise mit rotem Lack
gesperrt werden. Holen Sie die
Justagetabulatoren auf jedem Paar
magnetischen Ringen in der Zeile für den
Ausgangspunkt.

Lösen Sie den Klemmring des Jochs.

2.
Löschen Sie die Jochkeile von der CRT.
Löschen Sie das Band von der CRT.

3.

Schließen Sie einen Testgenerator an den
videoinput an.

4.

Schalten Sie den Monitor ein. Schalten Sie
den Testgenerator zum roten Feld. Justieren
Sie die horizontale und vertikale
Rastergröße, mit dem Fernbedienungbrett,
für Unterscan. Lassen Sie den Monitorlauf
für mindestens halbe Stunde.

Überprüfen Sie die helle

5.

Steuerselbstspannung mit einem DVM.
Schließen Sie das DMM an erden und
Anschlußstift 8 des LM324 920 auf der
Videokarte an. Die Spannung Strecke ist

4.0V zu 4.4V. Wenn aus Strecke heraus,
justieren Sie diese Spannung auf 4.2V, indem
Sie Zangen verwenden, um den unteren
Drehknopf auf dem FBT zu drehen.

Degauss die CRT und das Vorderteil des

6.

Monitorchassis.

920

Justieren Sie das Joch auf die CRT, um

7.
Mitte der Reinheit zu erreichen.
Ein Weg, diese Joch Position zu finden, soll
eine Kugelschreiber Markierung auf dem
DATENSICHTGERäT Hals an der
Hinterseite und den vorderen Extremen der
Reinheit machen.
Machen Sie eine dritte Markierung
zwischen den zwei Markierungen und Satz
das Joch zu dieser Position.
Drehen Sie das Joch auszurichten, die
raster oberste Linie, mit dem Oberteil Rohr
des Bilds.
Ziehen Sie die Joch Klammer fest. Kippen
Sie die Joch Seite zu Seite und auf und ab
während Zuschauen des roten Felds zu
beglaubigen, daß jene Reinheit gut ist.

8.

Wenn die Joch Position Regelung gute
Reinheit nicht herstellt, stellen Sie den
Reinheit Magneten ein. Diese sind die
magnetischen Ringe der nächst Joch
Winden.

9.

Schalten Sie den Generator zum rot/blauem
Raster. Stellen Sie den 4 Stange Magneten
(Mitte Paar) für Zusammenlaufen vom roten
und blauen in der Mitte des Schirms ein.

Kippen Sie das Joch auf und ab für das

10.
beste Zusammenlaufen um die Kante des
Rasters. Fügen Sie den obersten Joch Keil
ein. Kippen Sie die Joch Seite zu Seite für
das beste Zusammenlaufen um die Kante des
Rasters und fügen Sie den restlichen Joch
Keile ein. Befestigen Sie die Keile.

VORSICHT: Um elektrischen Schlag zu
vermeiden, berühren Sie nicht sich zu den
Jochleitern oder -presse gegen die Anode
Schutzkappe.

Halten Sie immer eine Hand frei beim
Arbeiten auf Elektronik.

Schalten Sie den Generator zum weißen

11.

Raster. Stellen den 6 Stange Magneten
(Paaren nahst zum Videoausschuß) für
Zusammenlaufen vom grünen. Schritt #10
und dieser Schritt können für das günstigste
Zusammenlaufen wiederholt werden müssen.

Wenn die Eckkonvergenz noch nicht

12.

annehmbar ist, können Shunts benutzt
werden, um dieses Problem zu beheben.

Shunts sind von CERONIX vorhanden.
Shuntauftragsnummer ist CPM2011.

101

Date

CERONIX, INC.
13350 New Airport Road
Auburn, California 95602-7419

Tel. (530) 886 - 6400
Fax. (530) 888 - 1065
WEB. www.ceronix.com

REPLACEMENT PARTS PURCHASE ORDER FORM

Purchase Order No.
Name

BILL TO

STREET & N0.

CITY

Phone No.
Shipping Information
Comments

CERONIX

Part No.

1
2

STATE ZIP

Requisition No.

SHIP TO

STREET & N0.

CITY

STATE ZIP

Fax No.

Description PriceQuantity

3
4
5
6
7
8

9
10
11
12

Please copy form and fill in, parts order, on copy.

102

DEGAUSSING COIL ATTACHMENT SPECIFICATION.

.

.

103

ATTACH THE
GROUNDING
STRAP FIRST.

With the degaussing coil leads centered on the bottom of the
CRT, FORM THE COIL to avoid the remote control board.

For The Model 1493 Video Monitor

Use degaussing coil part number CPS1766.

INSTALL A WIRE TIE through
the top hole in the left CRT ear.

INSTALL WIRE TIES through
the bottom hole in the left CRT ear.

INSTALL A WIRE TIE through
the top hole in the right CRT ear

INSTALL WIRE TIES through
the bottom hole, with the
grounding strap spring, in the

right CRT ear.

Degaussing Coil & Grounding Strap Attachment Specification.

For The Model 1793, 1993, 2093 Video Monitor.

The first item to attach to the picture tube is the grounding strap. Lay the tube face

1.
down on a soft surface. Slide the folded over end of the braided wire over the top left
CRT mounting ear (The braided wire is oriented to the left). Attach the spring at the
other end to the left hole of the right bottom mounting ear.

2. Next attach the degaussing coil. Locate the connector wires at the bottom center of
the CRT. Form the degaussing coil to the contour of the tube at the top two corners.
Attach and tighten two 3" wire ties on the inside hole of the top two corners.
Loosely attach two 15" wire ties around the degaussing coil and around the bottom
ears. Tighten the wire ties.

CAUTION: The ground cable from the enclosure to the monitor chassis

must be connected before applying power to the monitor.

3" Wire Tie

2PL

CPM2003

Grounding Strap

CPS1791

Degaussing coil Connector

Plugs in main board left side of fuse.

Top of CRT

Anode Connection

Degaussing

coil
CPS1771
CPS1828
CPS1847
CPS1860

Ground

Connector.

Attach to

CRT socket

board.

15" Wire Tie

2PL

CPM2013

Spring

104

3 Blue

2

Blue

1

Black

Schematic:

1

2

Bottom
View
(pins)

3

Plugs in main board left side of

flyback transformer.

Yoke Connector.

Degaussing Coil & Grounding Strap Attachment Specification.

For The Model 2793 and 3693 Video Monitor.

1. The first item to attach to the picture tube is the grounding strap. Lay the tube face
down on a soft surface. Slide the folded over end of the braid over the left top CRT
mounting ear. Attach the spring at the other end to the, right side top, slot in the
rimband. Pull the bare wire through the bottom slot in the rimband (tension the
spring) and back around the braid. The coils of the spring should measure about 1.25".

2. Next attach the degaussing coil. Locate the connector wires at the bottom center of
the CRT. Loosely attach the degaussing coil with 5" wire ties as shown below.
Adjust the coil for an equal size top and bottom coil half. Tighten the wire ties.

3. Plug the yoke connectors on the yoke as shown below.

CAUTION: The ground cable from the enclosure to the monitor chassis

must be connected before applying power to the monitor.

Grounding Strap

Yellow

Brown

Degaussing coil Connector

Plugs in main board left side of fuse.

Top of CRT

Anode Connection

Blue

Red

Degaussing

coil
CPS1786
CPS1856

Ground

Connector.

Attach to

CRT socket

board.

3 Blue

2

Blue

1

Black

Schematic:

1

2

Bottom
View
(pins)

Yoke Connector.

3

Plugs in main board left side of

flyback transformer.

105

Highpot, For Shock Hazards, Circuit Description.

For the models 1493,1793, 1993, 2093, 2793, and 3693 video monitors.

It is the responsibility of the company which uses the Ceronix
monitor in there system to make sure that no shock hazards
exist. Below is a description of the highpot test to verify that
the monitor is properly connected to an isolation transformer.

Once the monitor is installed in the enclosure, the protective
earth ground connection must be connected. The connection
point is located on the inside of the main board metal frame
behind the serial number label.

Building wiring

AC line

Primary Line

GROUND

Machine in which the monitor is used.

The MONITOR is connected to
the enclosure ground via the
signal cable, monitor support
hardware, and the protective
earth ground wire.

The chassis ground must be
connected to earth ground.

All the large accessible metal
parts are connected to ground.

FUSE

Isolation

Transformer

106

HIGH

POT

TESTER

Highpot, Für Schock Gefahren, StromkreisBeschreibung.

Für die Modelle 1493,1793,1993,2093,2793, und 3693 videomonitoren.

Es ist die Verantwortung der Firma, die den Ceronix Monitor in dort
system benutzt, sich zu vergewissern, daß kein Schock Gefahren
existieren. Unten ist eine Beschreibung Prüfung des highpot zu
beglaubigen, daß der Monitor ordentlich an einen Isolierung Umformer
angeschlossen wird.

Nachdem der Monitor in der Einschlieflung installiert wird, muß der
schützende Erde Erdanschluß verbunden werden. Der Anschluß Punkt
wird sich auf dem innerhalb des Hauptausschusses Metalls Rahmens
hinter dem Seriennummer Etikett befunden.

Gebäudeverdrahtung

Wechselstromezeile

PrimärZeile

ERDEN

Maschine, in der der Monitor benutzt wird.

Der MONITOR wird an den
Einschließung Erden über das
Signalkabel, Monitor Stütze
Hardware und den schützende
Erde Erdungsdraht
angeschlossen.

Der Chassiserden muß an die
Masse Erdletung angeschlossen
werden.

SICHERUNG

Lokalisierung

Transformator

Alle großen zugänglichen
Metallteile werden an erden
angeschlossen.

HIGHPOT

Prüfvorrichtung

107

Wire Routing Instructions.

,

.

d

n

e
s

Attach the protective earth
green / yellow, ground wire

Rout yoke wires
over CRT neck.

Fold remote cable to clear
CRT and add wire tie.

Shorten EHT wire
and add wire tie.

Shorten focus wire
and add wire tie.

Plug in video board.

Rout G2 wire aroun
CRT socket, shorte
with loop, and add
wire tie.

108

Fold video flat cable to
avoid contacting the
metal frame. Secure
fold with a wire tie.

Finished assembly with th
different voltage type wire
not touching each other.

1

Program

Precision Resistor Arrays (PRAs).

Make solder connection CA when using these C PRAs for replacement parts on the XX92 product line.

ΩΩ

200ΩΩ

68.1K

C13

RED

GREEN BLUE 12V 4.8V BLUE BLUE

ΩΩ

200ΩΩ

C16

23 5678910 131415161718192011412

H.

Program

BlankPULSE i BeamPULSE

200ΩΩ

Program

ΩΩ

C8

20K 1.82

K

GND

C6C5

NC

68.1K68.1K
C3C2C1

2.74K 1.82

CA

ΩΩ

900ΩΩ

C17

LINE LINE Amp out Amp FBPULSEi Beam i Beam i sense Amp FBi sense Amp out Amp FBi sense Amp out

K

C4C7

5.00K

4K

C9

BLUE GREEN GREEN

4K

C11C10

5.00K
C12

GREEN RED RED RED

14

4K

C14

13 14576LM324 Pin No. 2

5.00K
C15

AUTO BIAS RESISTOR ARRAY "C Film"

C

P/N CPR0506

IA - Inverts Horizontal Sync. IB, IC, & ID Adjust the Horizontal Oscillator Frequency. For 31.5KHz Operation; IB=Hfo +400 Hz, IC=Hfo +800Hz, & ID=Hfo +1,600Hz.

2.78K

20K

I13

I5

PLL

O/S

45K

I6

1

FBP

1.8K

I1

12K

I2

23 5678910 1314151617181920

H. Pos.

H. Sync

POT

Cap.

8.8K

I12

IA

22K

HORZ.

GND GND

+12V

2.7K

I4

I3

H. Sync

H. Pos.

Output

O/S

1 LA7851 Pin No.

IB IC ID

ΩΩ

340ΩΩ

ΩΩ

11

PLL

SYNC

170ΩΩ

10K

I7

I15

I14

33K

PLL

output

Cap.

1K

I8

OSC.

680ΩΩ

ΩΩ

I16

I9

Osc.Dis-

charge

987432

9.31K

Hfo
SET

I10

H. +12V

Line

Fly-

wheel

Cap.

200

1/2

I11

H. Drive

Damper

200

1/2

I11

Damper

Cap.

I

Horizontal Control Resistor Array "I Film"

P/N CPR0502

JA - Decreases V+ line by 1.5V
JB - Decreases V+ line by 3V

91.4K

2.33K
J13

J1

JA JB

11K

23.2K

J3

J2

1

V+

SENSEV+Adj.

2345678910 121314151617181920

V-

-FB CAP.

E. AMP.

JC - Increases V+ line by 1.5V
JD - Increases V+ line by 3V

4.67K
J14

130ΩΩ

ΩΩ

JC

J15

ΩΩ

260ΩΩ

J16

JD

127K

10.6K

J4

E. Amp
Output

J5

1/2 Raw

E. Amp

+Input

21 C5184 Pin No. 11 15 14 13 12

V-, 100V to 300V below GND.

POWER SUPPLY RESISTOR ARRAY. "J"

P/N CPR0501

45K

J6

33.2K

Osc.

17V V-

DC

Rx

45K

J17

ΩΩ

510ΩΩ

J7

FET

i Sense

J8

FET

Source

Normally GND -200V.

Power Supply Resistor Array "J Film"

Power Supply Resistor Array "J Film"

101.6K

JE

+17V V-

J18

38.8K

J9

O.V.P.
LOAD

1M

14.7K

D 142

+ Comp.

15.8K

J11 J12

D 142

- Comp. V-

J10

V+

J

J

P/N CPR0501

P/N CPR0501

109

Precision Resistor Arrays (PRAs).

1234 13 14 15 16 17 18 19 20

678 10115912

K

A - Increases Output Voltage by 10V

100Ω

301Ω

VIDEO
INPUT

1.62K

K21

K2

K1

3904

B

C

1N4148

+12V

LINE

K34

606Ω

E

K36

K7

1N4148

K35

150Ω

150Ω

K3B

NPN 9.25V

+16V

LINE

GND

K3A

689Ω

NPN

K6

0Ω

K33

21K
K22

820Ω

A

K13

5.62K
K11

PNP E

CAP.

K10

18Ω

K14

PNP

E

12.1K
K15

140Ω

PNP

40.2K
K19

560Ω

180Ω

K16

K17

PNP B

120V

DIODE

B

LINE

K18

PNPCAMP

Output

K

P/N CPR0510

12

2.2K

34567

1.2K

NE592

K8

K32

11 12

10

9

8

13

K5

1.49
K

K9

14

15Ω

3.32K 75Ω

33Ω

K20

K4

LINE

NE592
OutputB

E

+12V

GND GND

LINE

AUTO

BIAS

K12

127V

LINE

Video Amplifier Resistor Array "K Film"

110

Precision Resistor Arrays (PRAs).

1234 13 14 15 16 17 18 19 20

678 10115912

BLUE

A - Increases Output Voltage by 10V

100Ω

240Ω

VIDEO
INPUT

1.29K

K1

K21

K2

3904

B

+12V

LINE

606Ω

C

K34

1N4148

E

K36

K7

1N4148

K35

150Ω

150Ω

K3B

NPN 9.25V

+16V

LINE

GND

K3A

689Ω

NPN

K6

0Ω

K33

21K
K22

820Ω

A

K13

5.62K
K11

PNP E

CAP.

K10

18Ω

K14

PNP

E

12.1K
K15

140Ω

PNP

40.2K
K19

560Ω

180Ω

K16

K17

PNP B

120V

DIODE

B

LINE

K18

PNPCAMP

Output

12

2.2K

34567

1.2K

NE592

K8

K32

11 12

10

9

8

13

K5

1.49
K

K9

14

15Ω

3.32K 75Ω

33Ω

K20

K4

LINE

NE592
OutputB

E

+12V

GND GND

LINE

AUTO

BIAS

K12

127V

LINE

BLUE

P/N CPR0511Video Amplifier Resistor Array "BLUE Film"

111

CPM2501

1

CPM2501

x 3

2

CPM2005

x 3

CPM2002

x 3

3

VERTICAL DEFLECTION

BOOSTER ASSEMBLY

CERONIX CPA4267

603

603

NPN

NPN

TIP31ATIP31A

E

C

B

E

C

B

FR205

604

604

1W

605

605

1.2Ω,

606

606

607

4.7Ω, 607

608

4.7Ω, 608

609

609

VWXYZ

610

610

1W

3.3Ω,

FR205

611

611

602

602

NPN

NPN

E

C

B

E

C

B

CPB1615

CPB1615

Vertical Amp. PCB

Vertical Amp. PCB

PNP

PNP

ECB

ECB

HEATSINK

CPM2141

601

601

TIP32A

612, LA3838

612, LA7838

Complete Assembly View (Top view)

 CABLE: CPS1858

CABLE: CPS1858

12345678910111213

12345678910111213

VWXYZ

9

112

Board Assembly View (Component side)

1

2

3

The "Drive Signals To The Monitor Input" form is included here for those people who have
problems interfacing their drive electronics with the Ceronix Monitor.

DRIVE SIGNALS to the MONITOR INPUT
voltage and waveforms, work sheet.

CERONIX
13350 New Airport Road
Auburn, CA, USA 95602-7419
Fax [phone]

VIDEO:

With no load, the black level voltage of the video drive signal is:

To simulate the monitor input resistance.

With 75Ω load on the video drive signal
or other load.Ω

If available, sketch the video drive circuit on the back of a copy of this form.

For the following measurements use an oscilloscope.

With no load, the saturated color voltage is:

Company name:

Date:

For CERONIX Monitor

Model number:

RED GREEN BLUE

RED GREEN BLUE

the black level voltage is:

the saturated color voltage is:

Horizontal or composite sync:

Horizontal frequency:
Horizontal sync pulse time:

Compare your sync to
this table and check
the best fit.

For composite sync.

Sketch if different.

KHz

uS

"High" voltage:
"Low" voltage:

Vertical sync:

Vertical frequency: Hz "High" voltage: V
Vertical sync pulse time: uS "Low" voltage: V

Check correct polarity.

V

V

call [phone].

Complete form and send to:
or FAX us [phone]

CERONIX, INC.If there are any questions,
13350 New Airport Road
Auburn, CA. 95602-7419

113

DECLARATION OF CONFORMITY

Manufacturer:

Equipment:

Standards:

C. CERONIX
13350 New Airport Road
Auburn, California 95602
USA

Component Color Monitor.
Models: 1493-CGA, 1493-VGA, 1493-SVGA.

1793-VGA, 1793-SVGA.

1993-VGA, 1993-SVGA.
2093-CGA, 2093-VGA.
2793-CGA, 2793-VGA.
3693-CGA.

Component Isolation Transformer Assembly.
Models: ISOXFR-75W, ISOXFR-100W.

IEC 60950, 3rd Edition
'National Differences: AT, AU, CA, DE, ES, FR, GB, HU, RU, US, ZA.'

CAS/CAN 60950-00
UL 60950, 3rd Edition
IEC 65:85 + A1:87 + A2:89 + A3:92, 5th Edition
'National Differences: KR.'

Authorized
Signatory:

Title:

Date:

I hereby declare that the equipment named above has been tested and
found to comply with the relevant sections of the above referenced
specifications. The unit complies with all essential requirements of
the standards. The declaration is issued under the sole responsibility
of the manufacturer.

Don Whitaker

President

February 26, 2002

02

114

Models:

ISO XFR-75W

ISO XFR-100W

SAFETY ISOLATING TRANSFORMER

115

Circuit Function Description.

The basic function of the ISO XFR-75W and ISO XFR-100W is to
isolate the line power for monitors requiring an isolation transformer.
The transformer is designed to have a low leakage flux value which
allows it to be mounted close to the CRT. To accomplish the low
leakage flux, the transformer has two sets of primary and secondary
coils mounted on a modified toroid type core. The ideal transformer
would be a toroid but this type transformer is expensive because it is
difficult to wind.
A relay is used to connect the two primary coils in series or parallel to
accommodate 240VAC or 120VAC line voltages. Before power is
applied, the relay connects the transformer primary windings in series to
avoid excessive primary current for the 240VAC case. The control
circuit energizes the relay when the line voltage is 120VAC.

240VAC

or

120VAC

50 or 60 Hz

Input

240VAC

or

120VAC

Relay Control

Output

Circuit Description.

T518

T506

T504

T514

T507

T503

T511

T508 T502

T515

T520T517

T508

T510T513

T512

T518

T512

T516

T505T509

T504

T513

The fuse 506 protects the mains wires and the control PCB.
The power transformer has two internal 2 amp temperature sensitive fuses.
Each primary half has one, built in, series connected fuse.
A resettable fuse 507 is connected to the relay driver power supply.
This fuse protects the relay control circuit from square wave input which would
occur if an inverter is used as the power source. Capacitor 512 supplies
current from the line to capacitor 513 through diode 510 which forms the, relay
control, power supply. Diode 511 charges capacitor 512 during the negative
going part of the line wave. Transient Voltage Suppressor 516 regulates the
24V power supply and protects the relay coil from over heating.
The Mos Fet 514 shorts out the 24 volt power supply when the input line
voltage is 240VAC.
The input line voltage, at which the Mos Fet turns on, is set by the Mos Fet turn
on voltage (about 4V), the voltage drops across resistors 509 , 505 , 504 , and
the zener diode 503 . 154VAC is the approximate line voltage at which the
relay 518 switches. Capacitor 508 and diode 502 keep the Mos Fet turned
on for the complete AC cycle to eliminate ripple current in the capacitor 513 .
Resistor 504 limits the peak current to capacitor 508 to avoid relay switching
due to line transients. The zener diode 515 which is connected from the Mos
Fet source to gate protects the Mos Fet gate against over voltage. Resistor

T519

519 is needed to limit the mains current when the relay arcs across both sets of

contacts. Capacitors 517 and 520 reduce the relay T518 contact noise which
may be generated when switching.

116