Compaq P900 Service Manual

SERVICE MANUAL

N. Hemisphere Model

P900

P900

US Model

Canadian Model

AEP Model

AUS Model

Japan Model

UK Model

Chassis No. SCC-L30M-A

Picture tube

Video image area

Resolution

Standard image
area

Input signal

Video

Sync

SPECIFICA TIONS

0.24 mm (center) -0.25mm (edge)
aperture grill pitch
19 inches measured diagonally
90-degree deflection

(17.99" maximum viewing image)
Approx. 365 X 274 mm (w/h)

3/8

7/8

x 10

x 10

4/5

inches)

2/5

inches)

(14

Horizontal: Max. 1920 dots
Vertical: Max. 1440 lines

Approx. 352 x 264 mm (w/h)
(13

Analog RGB (75 ohms typical)

0.7 Vp-p, Positive
Separate Horizontal and Vertical
TTL level, Positive or Negative
Video Composite (Sync on Green)

0.3 Vp-p

F99

Power Consumption

Deflection frequency

AC input voltage/current

Dimensions

Mass

Design and specifications are subject to change without notice.

Maximum
Nominal

140 W, 478 BTU/h
100 W, 341BTU/h

Horizontal: 30 to 107 KHz (automatic)
Vertical: 48 to120 Hz (automatic)

100 to 120 V, 50/60 Hz,

1.8A (RMS) at 100VAC

220 to 240V, 50/60Hz,

1.0A (RMS) at 240 VAC

449 x 475 x 462 mm (w/h/d)
(17

Approx. 26.0 kg (57 lb 5 oz)

CHASSIS

2/3

7/10

x 18

x 18

1/5

inches)

COLOR MONITOR

P900

POWER MANAGEMENT MODES

If you have VESA's DPMS compliance display card or software installed in your PC, the monitor can automatically reduce
its power consumption when not in use. If input from keyboard, mouse, or other input devices is detected, the monitor
will automatically "wake up." The following table shows the power consumption and signaling of this automatic power
saving feature.

SELF DIAGNOSTIC FUNCTION

When a failure occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.

TIMING SPECIFICA TIONS

— 2 —

1.5 k

Ω

0.15 µF

AC
Voltmeter
(0.75 V)

To Exposed Metal
Parts on Set

Earth Ground

SAFETY CHECK-OUT

P900

After correcting the original service problem, perform
the following safety checks before releasing the set to
the customer:

1. Check the area of your repair for unsoldered or poorly­soldered connections. Check the entire board surface
for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires
are “pinched” or contact high-wattage resistors.

3. Check that all control knobs, shields, covers, ground
straps, and mounting hardware have been replaced.
Be absolutely certain that you have replaced all the
insulators.

4. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous
repair. Point them out to the customer and
recommend their replacement.

5. Look for parts which, though functioning, show
obvious signs of deterioration. Point them out to the
customer and recommend their replacement.

6. Check the line cords for cracks and abrasion.
Recommend the replacement of any such line cord
to the customer.

7. Check the B+ and HV to see if they are specified
values. Make sure your instruments are accurate; be
suspicious of your HV meter if sets always have low
HV.

8. Check the antenna terminals, metal trim, “metallized"
knobs, screws, and all other exposed metal parts for
AC Leakage. Check leakage as follows.

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part
having a return to chassis, must not exceed 0.5 mA (500
microampere). Leakage current can be measured by any one
of three methods.

1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers' instructions to
use these instructions.

2. A battery-operated AC milliammeter. The Data Precision
245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of
a VOM or battery-operated AC voltmeter. The "limit"
indication is 0.75 V, so analog meters must have an
accurate low voltage scale. The Simpson's 250 and Sanwa
SH-63TRD are examples of passive VOMs that are
suitable. Nearly all battery operated digital multimeters
that have a 2V AC range are suitable. (See Figure A)

WARNING!!

NEVER TURN ON THE POWER IN A CONDITION IN WHICH THE
DEGAUSS COIL HAS BEEN REMOVED.

SAFETY-RELA TED COMPONENT W ARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE P ARTS
LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL
COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS
SUSPECTED.

Figure A

AVERTISSEMENT!!

NE JAMAIS METTRE SOUS TENSION QUAND LA BOBINE DE
DEMAGNETISATION EST ENLEVEE.

ATTENTION AUX COMPOSANTS RELA TIFS A LA SECURITE!!

LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET P AR UNE
MARQUE SUR LES SCHEMAS DE PRINCIPE, LES VUES
EXPLOSEES ET LES LISTES DE PIECES SONT D'UNE
IMPORTANCE CRITIQUE POUR LA SECURITE DU
FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST
INDIQUE DANS LE PRESENT MANUEL OU DANS DES
SUPPLEMENTS PUBLIES PAR SONY. LES REGLAGES DE
CIRCUIT DONT L'IMPORTANCE EST CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS
LE PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE
CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU
LORSQU'UN MAUVAIS FONTIONNEMENT SUSPECTE.

— 3 —

P900

TABLE OF CONTENTS

Section Title Page

SAFETY CHECK-OUT ............................................................................. 3

1. DISASSEMBL Y

1-1. Cabinet/Shield Removal ............................................... 5

1-2. Service Position ............................................................. 5

1-3. D, A, H and N Board Removal....................................... 5

1-4. Picture Tube Removal ................................................... 6

2. SAFETY RELATED ADJUSTMENT .................................................. 7

3. ADJUSTMENTS .............................................................................. 8

4. DIAGRAMS

4-1. Block Diagram ............................................................. 11

4-2. Circuit Boards Location ............................................... 1 4

4-3. Schematic Diagrams and Printed Wiring Boards ...... 14

1. D Board - Schematic Diagram .............................. 15

2. H Board - Schematic Diagram .............................. 21

3. N Board - Schematic Diagram .............................. 22

4. A Board - Schematic Diagram ............................... 23

4-4. Semiconductors .......................................................... 2 6

5. EXPLODED VIEWS

5-1. Chassis ....................................................................... 28

5-2. Packing Materials ........................................................ 29

6. ELECTRICAL P ARTS LIST............................................................30

— 4 —

SECTION 1

DISASSEMBLY

P900

1-1. CABINET/SHIELD REMOV AL

Push in the tip of a screwdriver
about 5mm to unlock the claw.

4

Four screws
(+ BVTP 4 x 8)

5

8

Three screws
(+BVTT 4 x 8)

9

Side cover

Top cover

9

Side cover

T o remove the rear cover of the unit, press in and unsnap the claw on
the right side of the unit, then press in and unsnap the right claw at the
top of the unit. Repeat this with the claw on the left side and top left
of the unit and remove.

Bezel assembly

7

8

Three screws
(+BVTT 4 x 8)

6

Video shield

1-2. SERVICE POSITION

Cabinet

1

Two screws
(+ BVTP 4 x 16)

Cabinet

2

Two claws

1

A board

1 When the D board is placed in service position, the Safety Earth Wire

(black wire) is disconnected.

2 After service is completed and the D board reinstalled, the Safety Earth

Wire must be reattached to the chassis. This must be confirmed before
any subsequent procedures are attempted.

Cabinet

2

Two claws

Three screws
(+BVTT 4 x 8)

Bezel assembly

3

rotate 180º

2

D board

1-3. D, A, H and N BOARD REMOVAL

9

Two screws

(BVTT 4 x 8)

11

H board

10

N board

8

D board

7

One screw

(BVTT 4 x 8)

6

Five screws

(BVTP 3 x 8)

5

Holder

7

One screw

(BVTT 4 x 8)

3

One screw

(BVTT 4 x 8)

4

Cable bracket

2

A board

1

Three screws

(BVTT 4 x 8)

— 5 —

P900

1-4. PICTURE TUBE REMOVAL

2

A board

3

Neck assembly

4

Deflection yoke

5

Two screws
(BVTP 4 x 16)

6

Four screws

(Tapping screw 5)

Picture tube shield

9

Demagnetization coil

Tension spring

7

Two screws

(BVTP 4 x 16)

1

Anode-cap

8

Stand
assembly
(D board)

Cushion

REMOVAL OF THE ANODE-CAP

WARNING: Short circuit the anode of the picture tube and the anode-cap to the metal chassis, CRT shield or carbon painted on the

REMOV AL PROCEDURES

1. Turn up one side of the rubber cap in
the direction indicated by arrow .

HOW TO HANDLE AN ANODE-CAP

1. Do not use sharp objects which may cause damage to the surface
of the anode-cap.

2. Do not squeeze the rubber covering too hard to avoid damaging the
anode-cap. A material fitting called a shatter-hook terminal is built into
the rubber.

3. Do not force turn the foot of the rubber cover. This may cause the
shatter-hook terminal to protrude and damage the rubber.

CRT, after removing the anode.

2. Use your thumb to pull the rubber cap firmly
in the direction indicated by arrow .

3. When one side of the rubber cap
separates from the anode button, the
anode-cap can be removed by turning
the rubber cap and pulling it in the

direction of arrow .

— 6 —

SECTION 2

SAFETY RELA TED ADJUSTMENT

P900

When replacing parts shown in the table below, the
following operational checks must be performed as a safety
precaution against X-ray emissions from the unit.

Part Replaced ( )

HV ADJ RV901

Part Replaced ( )

HV Protector T901 (FBT), R917, R918, R923, R920,
Circuit R919, R1004, C920, D91 1, D912

Beam Current R933, R932, R921, R1006, D915,
Protector Circuit D917, IC901, T901 (FBT)

HV Regulator T901 (FBT), IC901, R924, R925,
Circuit RV901

Allow the unit to warm-up for one minute prior to checking

the following conditions:

HV Regulator Check

1) Input white cross hatch signal. (fH = 106.3 kHz)

2) CONT and BRT Control normal condition.

3) Input voltage: 120 ± 2 VAC

4) Confirm that the voltage is within the voltage range shown
below.

Standard voltage: 27.0KV ± 0.2KV

5) When replacing components identified by
sure to recheck the High Voltage.

6) Verify the High V oltage as shown above (27.0KV
+0.2KV) is within specification. If not, adjust RV904 on
the D board.

7) After adjusting the High Voltage within specification, put
the RV cover on RV901 as shown below and apply
sufficient amount of RTV around RV901.

, make

HV Protector Check

1) Confirm the voltage between D912 cathode and GND on D
Board is more than 15.0 VDC.

2) Using an external DC power supply, apply the voltage
shown below between cathode of D915 on D Board and
GND.

Confirm that the HV protector circuit (Hold down) works
and CRT screen disappears when applying the voltage
protector as shown below.

Standard DC Voltage: 21.1 +0.00 / - 0.05 VDC

Check Condition

• Input voltage : 120 ± 2 VAC

• Input signal : (fH = 31.4 kHz), Cross Hatch

• CONT and BRT Control: Normal Condition

Beam Current Protector Check
(Software Logic)

1) Using an external current source, apply 1.68mA from pin
of T901 (FBT) to GND on D Board. Confirm that the
software logic beam current protector works and that the
CRT screen disappears.

Check Condition

• Input voltage : 120 ± 2 VAC

• Input signal : (fH = 31.4 kHz), Cross Hatch

• CONT and BRT Control: Normal Condition

B± Maximum Check

1) Input white cross hatch (fH = 106.3 kHz) signal.

2) Beam control: Normal condition

3) Input voltage: 100 - 120 VAC

Note: Use NF power supply or make sure that
distortion factor is 3% or less.

4) Confirm that the voltage is within the voltage range
shown below.

Standard voltage: 195.0 -205.0 VDC

RV901

— 7 —

P900

a

b

SECTION 3

ADJUSTMENTS

Connect the communication cable of the connector located on the D board on the monitor. Run the service software and then follow
these instructions.

IBM AT Computer

as a Jig

1-690-391-21

1

D-sub
(9 Pin [female])

*The parts above ( ~ ) are necessary for DAS adjustment.

mini Din
(8Pin)

1

A-1500-819-A

2

Interface Unit

3

4 Pin

3

4 Pin 4 Pin

Allow a 30 minute warm-up period prior to making the following adjustments:

3-1. Landing Rough Adjustment

1. Enter the full white signal.

2. Adjust the contrast to the maximum.

3. Input full green signal.
(Note: Turn off the outputs from R ch and B ch of SG)

4. Move the DY backward and adjust the purity magnet so that a
green raster positions in the center of screen.

5. Moving the DY forward, adjust so that an entire screen
becomes pure green.

14. If landing does not meet specifications, correct with a

6. Adjust DY Tilt, use TLV of DY for this adjustment. Adjust the
Register "TILT" to 0.

7. Lightly tighten the DY screw.

15. Perform auto-degauss.

16. Remove sensor and wobbling coil.

17. Confirm that there is no DY tilt. Affix purity magnet on

3-2. Landing Fine Adjustment

1. Place the set in the Helmholtz coil.

2. Set TLH plate to the zero position.

3. Adjust Purity Magnet on the Neck Assembly to zero position
and secure it with white pin.

3-3. Convergence Rough Adjustment

1. Enter the white crosshatch signal.

2. Roughly adjust the H. STAT and V. STAT with a

4. Set "VPIN SAW TOP" and "VPIN SAW BTM" to zero
position.

3. Roughly adjust HMC and VMC with a six-pole magnet.

5. Display a plain green pattern.

6. Degauss CRT and shield with hand-degausser .

7. Perform auto-degauss.

8. Attach a wobbling coil to the specified position of CRT.

3-4. Convergence Fine Adjustment

1. Display crosshatch pattern with R and B.

2. Adjust H. STAT and V. STAT with 4-pole magnet.

9. Attach a landing adjuster sensor on the CRT.

10. Using a landing checker, adjust the DY position, purity,
tilt of DY.

11. Tighten the DY screw.

Clamping torque: 22 ± 2 kg.cm (2.2 ± 0.2 N.m)

12. Perform auto-degauss.

13. Adjust top and bottom pin pitching DY with two wedges so
that (a) is equal to (b)(see the figure at top of next column).
Also, leave the yaw of DY to the physical center position with
another two wedges.

3-702-691-01
Connector Attachment

To BUS CONNECTOR

Fasten wedges so that DY does not move.

disc magnet.

DY using white paint.

four-pole magnet.

(Do not adjust H.STAT and V.STAT with resistor.)

TLV VR (Unused)

CRT

DY

XCV Core

2 Pole

6 Pole Mg

A Board

Neck Assy

2 Pole (Unused)

4 Pole Mg

TLH Plate

— 8 —

A

B

b

b

a

a

3. Display white crosshatch pattern.

4. Adjust HMC and VMC with 6-pole magnet.

5. Display crosshatch pattern with R and B.

6. Adjust H.STAT and V.STAT with 4-pole magnet.

7. Fine adjust H. STAT and V. STAT with use register
'HSTAT" and "VSTAT" in the range of 0 ± 10.

8. Adjust H.TILT with TLH plate.

3-7. Vertical and Horizontal Position and

Size Specification

fH < 60 KHz

2.4 mm

2.4 mm

fH > 60 KHz
a

< 2.0 mm

b

< 2.4 mm

P900

or

Move of THL Plate

9. Adjust XCV with XCV core.

or

Move of XCV Volume

10. Repeat steps 2-8 to optimize condition of whole screen.

11. Affix 4-pole magnet, 6-pole magnet and TLH plate and

XCV core with white paint.

3-5. Zero Positions of Ring Magnets

are Indicated by Arrows

A B
264 352

3-8. Convergence Specification

C

A

Horizontal and Vertical

B

Prime Mode
A

< 0.25 mm

B

< 0.30 mm

C

< 0.35 mm

Other Mode

0.30 mm

0.35 mm

0.40 mm

3-9. Focus Adjustment

Adjust focus (V) and focus (H) for optimum focus.

[2pole magnet on DY] [4pole magnet]

[2pole magnet on Neck Assy][6pole magnet]

3-6. White Balance Adjustment

Specification

1. 9300K

x=0.283
y=0.298

2. 5000K

x=0.346
y=0.359

+0.015

+0.015

(All White)

+0.015

+0.015

(All White)

— 9 —

P900

NOTES:

— 10 —

P900

— 14 —— 13 —— 12 —— 11 —

4-1. BLOCK DIAGRAM

SECTION 4
DIAGRAMS

D

A

H

N

Note:

• All capacitors are in µF unless otherwise noted. pF: µµF 50
WV or less are not indicated except for electrolytic.

• Indication of resistance, which does not have one for rating
electrical power, is as follows.

• All resistors are in ohms.

• : nonflammable resistor.

•

: fusible resistor.

•

: internal component.

•

: panel designation and adjustment for repair.

• All variable and adjustable resistors have characteristic curve

B, unless otherwise noted.

• : earth-ground

•

: earth-chassis.

• The components identified by in this basic schematic

diagram have been carefully factory-selected for each set in
order to satisfy regulations regarding X-ray radiation. Should
replacement be required, replace only with the value
originally used.

• When replacing components identified by

, make the
necessary adjustments by using RV901 ( ) as indicated.
(See page 7)

• When replacing parts shown in the table below, be sure to
perform the safety related adjustment.

• All voltages are in volts.

• Readings are taken with a 10 M W digital multimeter

• Readings are taken with a color-bar signal input.

• Voltage variations may be noted due to normal production
tolerances.

• * : Cannot be measured.

• Circled numbers are waveform references.

•

: B +bus.

• : B - bus.

Pitch: 5 mm
Rating electrical power 1/4 W (CHIP: 1/10 W)

Note: The components identified by shading and
mark are critical for safety. Replace only with
part number specified.

Note: Les composants identifies per un trame et une
marque sont critiques pour la securite. Ne les
remplacer que par une piece portant le numero specifie.

4-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS

4-2. CIRCUIT BOARDS LOCATION

Part Replaced ( )

RV901

HV ADJ

Part Replaced ( )

D board T901, IC901, R924, R925,

RV901

HV Regulator
Circuit

D board T901, R917, R918, R923, R920,

R919, R1004, C920, D911,
D912

HV Protector
Circuit

D board R933, R932, R921, R1006,

D915, D917, IC901, T901

Beam Current
Protector
Circuit

861 Block Diagram.p65 09/03/1999, 11:58 AM1

— 18 —— 17 —— 16 —— 15 —

P900

board

D

1234

A

B

C

D

E

F

G

H

I

J

K

L

M

N

D BOARD SCHEMATIC DIAGRAM

56789101112131415

16 17 18 19

20

D610 A-6 D703 I-8 D1009 E-2 IC701 I-2 Q516 F-3

D401 I-5 D611 A-8 D705 H-1 D1010 C-2 IC702 J-4 Q517 C-3

D402 H-2 D612 A-7 D901 H-9 D1011 C-2 IC703 B-2 Q519 C-4

D405 I-5 D613 B-6 D903 H-10 D1012 C-2 IC901 G-10 Q605 B-7

D501 F-8 D614 D-9 D904 H-10 D1013 C-2 IC1001 D-1 Q606 D-8

D502 G-10 D615 D-8 D906 E-12 D1014 C-2 IC1003 C-3 Q607 D-10

D503 F-6 D616 E-8 D907 F-12 D1018 C-1 IC1005 D-2 Q608 D-13

D504 F-8 D617 E-8 D908 H-10 D1021 E-1 Q609 B-4

D505 F-6 D618 D-8 D909 E-11 D1022 E-1 Q501 F-3 Q701 I-8

D506 F-3 D619 E-7 D910 G-12 D1024 C-3 Q502 F-2 Q702 H-8

D507 G-1 D620 D-7 D911 H-13 D1025 E-2 Q503 F-2 Q703 I-8

D508 G-1 D621 D-7 D912 I-13 Q504 F-9 Q704 I-7

D509 F-2 D622 D-6 D913 I-13 IC401 I-6 Q505 H-8 Q705 I-7

D510 F-1 D623 D-4 D914 I-13 IC501 F-1 Q506 F-5 Q706 J-11

D511 G-1 D624 C-5 D915 J-12 IC502 C-5 Q507 F-3 Q901 E-13

D512 G-1 D625 C-11 D916 I-12 IC503 G-1 Q508 G-3 Q902 E-11

D514 C-4 D626 D-11 D917 I-9 IC603 A-7 Q509 G-2 Q903 G-10

D515 C-4 D627 D-10 D920 H-1 IC604 D-5 Q510 F-4 Q904 H-11

D516 F-6 D628 D-12 D921 H-1 IC605 D-4 Q511 G-5

D517 I-8 D629 A-3 D1001 E-2 IC607 A-6 Q512 H-5 X1001 D-2

D518 B-4 D630 A-5 D1003 D-2 IC608 A-6 Q513 H-4

D608 A-6 D701 H-8 D1007 C-3 IC609 B-4 Q514 H-3

D609 B-8 D702 H-8 D1008 C-3 IC610 B-5 Q515 G-4

TRANSISTOR

IC

CRYSTAL

DIODE

D BOARD LOCATOR LIST

123

456

789

5.8 Vp-p (H) 4.8 Vp-p (V)

3.3 Vp-p (8MHz)

12.9 Vp-p (H) 12.8 Vp-p (H) 1.14 KVp-p (H)

12.3 Vp-p (H) 18.7 Vp-p (H) 10.4 Vp-p (H)

D BOARD WAVEFORMS

10 11 12

13

1.14 Vp-p (H) 70.0 Vp-p (H) 1.5 Vp-p (V)

55.0 Vp-p (V)

861 D Schematic .p65 09/08/1999, 12:54 PM1

[CONVERGENCE, DEFLECTION, POWER]

D

— 22 —— 21 —— 20 —— 19 —

P900

1234

A

B

C

D

56

H BOARD SCHEMATIC DIAGRAM

1234

A

B

C

D

E

F

5678

N BOARD SCHEMATIC DIAGRAM

[FUNCTION CONTROL]

1234A5678

123

A

B

[MICRO, DSP]
(CONDUCTOR SIDE)

N

123

A

B

[MICRO, DSP]
(COMPONENT SIDE)

N

1234

A

B

C

D

E

F

G

H

I

5678910111213

J

861 DHN Schematic.p65 09/08/1999, 1:05 PM1

— 25 —— 24 —— 23 —

P900

13

A BOARD SCHEMATIC DIAGRAM

1234

A

B

C

D

E

F

G

H

I

56789101112

1234

A

B

C

D

E

5678

[VIDEO]

A

D012 C-8 D101 E-6 D311 D-6 IC007 D-8 Q005 C-6

D002 C-6 D014 B-7 D108 B-2 IC008 E-5 Q006 A-6

D004 C-6 D016 E-8 D111 D-6 IC001 E-4 IC009 B-6

D005 D-8 D019 E-8 D201 E-6 IC002 D-3 X001 C-7

D007 D-8 D023 B-7 D208 B-2 IC003 B-7 Q001 A-7

D008 D-8 D024 B-7 D211 D-7 IC004 A-1 Q002 D-4

D010 E-8 D025 C-7 D301 D-6 IC005 B-8 Q003 D-3

D011 E-8 D026 B-7 D308 B-2 IC006 C-3 Q004 C-5

DIODE

IC

TRANSISTOR

CRYSTAL

A BOARD LOCATOR LIST

12

3

4

5

7

9

0.7 Vp-p (H)

0.7 Vp-p (H) 0.7 Vp-p (H)

4.2 Vp-p (H)

4.2 Vp-p (H)

4.1 Vp-p (H) 49.6 Vp-p (H)

47.1 Vp-p (H)

47.1 Vp-p (H)

A BOARD WAVEFORMS

12

6

8

11

10

board

A

— 26 —

4-4. SEMICONDUCTORS

5

1

1

2

3

4

1

2

3

CATHODE

ANODE

CATHODE

ANODE

~

~

+

-

~

~

+

-

CATHODE

ANODE

CATHODE

ANODE

1

2

3

2

1

3

E

C

B

B

C

E

E

C

B

E

LETTER SIDE

C

B

BA05T

PST574CMT-T1

1PS226-115

RDS.65B
DTZ-TT11-15B
DTZ4-7C
MA111

1SS119-25
MTZJ-39B
MTZJ-6.2B
RD15ESB3
RD18ESB2
RD3.0ESB2
RD3.6ESB2
RD4.7ESB2
RD10ESB2
RD16ESB3
RD5.1ESB2
RD5.6ESB2
RD8.2ESB2

2SC2362K-G
2SC3941A-Q(TA)

2SC3209LK

2SA1049-GR
2SC2784-E
2SC2785-HFE

DTC143ESA

HZS9.1NB2
1SS367-T3
EGP10D
HSS82
RGP02-17EL­UF4007G23
1N4148S
ERC81-004
ERA91-02
RH-1A
ERB38-06V1

FMQ-G5FMS
FMC-26UA
YG911S2R

D2L40-TA
D4SB60L

LA6500-FA
LA6510

TLP621D4-Y

E

C

B

2SC3421-Y
2SC1358-Y

STK391-110

57

14

MARKING SIDE VIEW

861 A Schematic.p65 09/08/1999, 1:07 PM1