Toshiba 27AF44, SANSUI TVS273 Schematic

0 (0)

SERVICE MANUAL

COLOR TELEVISION

27AF44

FILE NO. 050-200401

DOCUMENT CREATED IN JAPAN, Feb., 2004

SERVICING NOTICES ON CHECKING

6. AVOID AN X-RAY1. KEEP THE NOTICES

As for the places which need special attentions,

they are indicated with the labels or seals on the

cabinet, chassis and parts. Make sure to keep the

indications and notices in the operation manual.

3. USE THE DESIGNATED PARTS

5. TAKE CARE TO DEAL WITH THE

CATHODE-RAY TUBE

Safety is secured against an X-ray by consider-

ing about the cathode-ray tube and the high

voltage peripheral circuit, etc.

Therefore, when repairing the high voltage pe-

ripheral circuit, use the designated parts and

make sure not modify the circuit.

Repairing except indicates causes rising of high

voltage, and it emits an X-ray from the cathode-

ray tube.

Please include the following informations when you order parts. (Particularly the VERSION LETTER.)

1. MODEL NUMBER and VERSION LETTER

The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be

found at the end of the SERIAL NUMBER.

2. PART NO. and DESCRIPTION

You can find it in your SERVICE MANUAL.

HOW TO ORDER PARTS

Inferior silicon grease can damage IC's and transistors.

When replacing an IC's or transistors, use only specified silicon grease (YG6260M).

Remove all old silicon before applying new silicon.

IMPORTANT

2. AVOID AN ELECTRIC SHOCK

There is a high voltage part inside. Avoid an

electric shock while the electric current is

flowing.

The parts in this equipment have the specific

characters of incombustibility and withstand

voltage for safety. Therefore, the part which is

replaced should be used the part which has

the same character.

Especially as to the important parts for safety

which is indicated in the circuit diagram or the

table of parts as a mark, the designated

parts must be used.

4. PUT PARTS AND WIRES IN THE

ORIGINAL POSITION AFTER

ASSEMBLING OR WIRING

There are parts which use the insulation

material such as a tube or tape for safety, or

which are assembled in the condition that

these do not contact with the printed board.

The inside wiring is designed not to get closer

to the pyrogenic parts and high voltage parts.

Therefore, put these parts in the original

positions.

In the condition that an explosion-proof cathode-

ray tube is set in this equipment, safety is

secured against implosion. However, when

removing it or serving from backward, it is

dangerous to give a shock. Take enough care to

deal with it.

PERFORM A SAFETY CHECK AFTER

SERVICING

Confirm that the screws, parts and wiring which

were removed in order to service are put in the

original positions, or whether there are the

portions which are deteriorated around the

serviced places serviced or not. Check the

insulation between the antenna terminal or

external metal and the AC cord plug blades.

And be sure the safety of that.

(INSULATION CHECK PROCEDURE)

Unplug the plug from the AC outlet.

Remove the antenna terminal on TV and turn

on the TV.

Insulation resistance between the cord plug

terminals and the eternal exposure metal

[Note 2] should be more than 1M ohm by

using the 500V insulation resistance meter

[Note 1].

If the insulation resistance is less than 1M

ohm, the inspection repair should be

required.

[Note 1]

If you have not the 500V insulation

resistance meter, use a Tester.

[Note 2]

External exposure metal: Antenna terminal

Earphone jack

A1-1

SERVICING NOTICES ON CHECKING.....................................................................................

HOW TO ORDER PARTS ..........................................................................................................

IMPORTANT ...............................................................................................................................

TABLE OF CONTENTS..............................................................................................................

GENERAL SPECIFICATIONS....................................................................................................

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF ANODE CAP ...............................................................................................

2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ................................................

SERVICE MODE LIST ................................................................................................................

CONFIRMATION OF HOURS USED .........................................................................................

WHEN REPLACING EEPROM (MEMORY) IC ..........................................................................

ELECTRICAL ADJUSTMENTS..................................................................................................

BLOCK DIAGRAMS ...................................................................................................................

PRINTED CIRCUIT BOARDS

MAIN ........................................................................................................................................

CRT/VM COIL..........................................................................................................................

SCHEMATIC DIAGRAMS

MICON .....................................................................................................................................

CHROMA .................................................................................................................................

DEFLECTION ..........................................................................................................................

POWER ...................................................................................................................................

SOUND ....................................................................................................................................

TUNER/STEREO.....................................................................................................................

AV ............................................................................................................................................

COMB/FILTER.........................................................................................................................

CRT/SVM.................................................................................................................................

WAVEFORMS .............................................................................................................................

MECHANICAL EXPLODED VIEWS...........................................................................................

MECHANICAL REPLACEMENT PARTS LIST .........................................................................

ELECTRICAL REPLACEMENT PARTS LIST...........................................................................

A1-1

A2-1

A3-1~A3-5

B1-1

B2-1, B2-2

C1-1

D-1~D-5

E-1, E-2

F-1~F-4

F-5, F-6

G-1, G-2

G-3, G-4

G-5, G-6

G-7, G-8

G-9, G-10

G-11, G-12

G-13, G-14

G-15, G-16

G-17, G-18

H-1, H-2

I-1, I-2

J1-1

J2-1~J2-10

A2-1

GENERAL SPECIFICATIONS

G-1 TV CRT CRT Size / Visual Size 27 inch / 676.0mmV

System CRT Type Flat

Deflection 106 degree

Magnetic Field BV/BH +0.45G/0.18G

Color System NTSC

Speaker 2 Speaker

Position Front Side

Size 1.8 x 3.9 Inch

Impedance 8 ohm

Sound Output MAX

5.0+5.0 W

10%(Typical)

4.0+4.0 W

NTSC3.58+4.43 /PAL60Hz No

G-2 Tuning Broadcasting System US System M

System Tuner and System 1Tuner

Receive CH Destination USA(W/ CATV)

Tuning System F-Synth

Input Impedance VHF/UHF 75 ohm

2 - 69, 4A, A-5 - A-1,

CH Coverage A - I, J - W, W+1 - W+84

Intermediate Picture(FP) 45.75MHz

Frequency Sound(FS) 41.25MHz

FP-FS 4.50MHz

Preset CH No

Stereo/Dual TV Sound Yes

Tuner Sound Muting Yes

G-3 Power Power Source AC 120V AC 60Hz

Power Consumption at AC

135 W at AC 120 V 60 Hz

Stand by (at AC) 3 W at AC 120 V 60 Hz

Per Year -- kWh/Year

Protector Power Fuse Yes

Safety Circuit Yes

IC Protector(Micro Fuse) No

G-4 Regulation Safety UL/CSA

Radiation FCC/IC

X-Radiation DHHS/HWC

G-5 Temperature Operation +5oC ~ +40oC

Storage -20oC ~ +60oC

G-6 Operating Humidity Less than 80% RH

A3-1

GENERAL SPECIFICATIONS

G-7 On Screen Menu Yes

Display Menu Type Icon

Picture Yes

Contrast Yes

Brightness Yes

Color Yes

Tint Yes

Sharpness Yes

Sound Yes

Bass Yes

Treble Yes

Balance Yes

BBE On/Off Yes

Stable Sound On/Off Yes

Surround On/Off Yes

Set Up Yes

TV/CATV Yes

Auto CH Memory Yes

Add/ Delete Yes

Option

Yes

Language Yes

CH Label Yes

Favorite CH Yes

V-Chip Yes

Lock Yes

On/Off Timer Yes

Color Stream DVD/DTV Yes

Control Level Yes

Volume Yes

Brightness Yes

Contrast Yes

Color Yes

Tint Yes

Sharpness Yes

Tuning No

Bass Yes

Treble Yes

Balance Yes

Back Light No

Stereo,Audio Output,SAP Yes

Video Yes

Color Stream Yes

Channel(TV/Cable) Yes

CH Label Yes

Game Timer Yes

Sleep Timer Yes

Sound Mute Yes

V-chip Rating Yes

16: 9 Yes

G-8 OSD Language English French Spanish

G-9 Clock and Sleep Timer Max Time 120 Min

Timer Step

10 Min

On/Off Timer Program(On Timer / Off Timer) Yes

Wake Up Timer No

Timer Back-up (at Power Off Mode) more than -- Min Sec

A3-2

GENERAL SPECIFICATIONS

G-10 Remote Unit RC-GW

Control Glow in Dark Remocon Yes

Format Toshiba

Custom Code

TV:40-BF h

Power Source Voltage(D.C) 3V

UM size x pcs UM-4 x 2 pcs

Total Keys

50 Keys

Keys Power Yes

1 Yes

2 Yes

3 Yes

4 Yes

5 Yes

6 Yes

7 Yes

8 Yes

9 Yes

0 Yes

100 Yes

CH Up Yes

CH Down Yes

Volume Up Yes

Volume Down Yes

TV/Caption/Text Yes

CH1/CH2 Yes

TV/Video(TV/AV) Yes

CH RTN/CH ENT(Quick View) Yes

Sleep Yes

RE Call(Call) Yes

Reset Yes

Menu/Enter Yes

Mute Yes

Exit Yes

MTS(Audio Select) Yes

Fav.Up Yes

Fav.Down Yes

16: 9 Yes

Multi Brand Keys CH Up(VCR) Yes

CH Down(VCR) Yes

Pause/Still Yes

TV/VCR(VCR) Yes

FF Yes

Rew Yes

Rec Yes

Play Yes

Stop Yes

TV Yes

VCR Yes

Cable Yes

DVD Yes

CODE Yes

Volume Up(DVD) Yes

Volume Down(DVD) Yes

DVD CLEAR Yes

TOP MENU Yes

DVD MENU Yes

DISPLAY Yes

A3-3

GENERAL SPECIFICATIONS

G-11 Features Auto Degauss Yes

Auto Shut Off Yes

Canal+ No

CATV Yes

Anti-theft No

Rental No

Memory(Last CH) Yes

Memory(Last Volume) Yes

V-Chip Yes

Type

USA,Toshiba Type

BBE Yes

Auto Search No

CH Allocation No

SAP Yes

Just Clock Function No

CH Label Yes

VM Circuit Yes

Full OSD No

Premiere No

Comb Filter Yes

3 Lines

Auto CH Memory Yes

Hotel Lock No

Closed Caption Yes

Stable Sound Yes

FBT Leak Test Protect Yes

CH Lock Yes

Video Lock Yes

Game Timer (Max Time:120 Min) Yes

Energy Star No

Favorite CH Yes

Surround Yes

16:9 Mode Yes

G-12 Accessories Owner's Manual Language English / French

W/ Warranty Yes

Remote Control Unit Yes

Rod Antenna

Poles

Terminal

Loop Antenna

Terminal -

U/V Mixer

DC Car Cord (Center+)

Guarantee Card

Warning Sheet

Circuit Diagram

Antenna Change Plug

Service Station List

Important Safety Instruction

Dew/AHC Caution Sheet

AC Plug Adapter

Quick Set-up Sheet

Battery Yes

UM size x pcs UM-4 x 2

OEM Brand

AC Cord

AV Cord (2Pin-1Pin)

Registration Card (NDL Card) Yes

PTB Sheet

ESP Card Yes

300 ohm to 75 ohm Antenna Adapter

A3-4

GENERAL SPECIFICATIONS

G-13 Interface Switch Front Power Yes

System Select No

Main Power SW No

Sub Power No

Channel Up Yes

Channel Down Yes

Volume Up Yes

Volume Down Yes

Rear AC/DC No

TV/CATV Selector No

Degauss No

Main Power SW No

Indicator Power Yes(RED)

Stand-by No

On Timer No

Terminals Front Video Input = VIDEO3

RCA

Audio Input = VIDEO3

RCA x 2

Other Terminal

Head Phone

Rear Video Input(Rear1) = VIDEO1

RCA

Video Input(Rear2) = VIDEO2

RCA

Audio Input(Rear1) = VIDEO1

RCA x 2

Audio Input(Rear2) = VIDEO2

RCA x 2

Video Output

RCA

Audio Output

RCA x 2

Euro Scart

Color Stream

RCA x 3

S Input Yes

Diversity No

Ext Speaker No

DC Jack 12V(Center +) No

VHF/UHF Antenna Input

F Type

AC Outlet No

G-14 Set Size Approx. W x D x H (mm)

740 x 495 x 574.5

G-15 Weight Net (Approx.) 40.0 kg

( 88.2lbs)

Gross (Approx.) 46.5 kg

( 102.5lbs)

G-16 Carton Master Carton

Content ----

Sets

Material --

/--

Dimensions W x D x H(mm) -- x -- x --

Description of Origin

Gift Box Yes

Material Double/Brown

Dimensions W x D x H(mm) 850 x 620 x 665

Design As per Buyer's

Description of Origin Yes

Drop Test

Natural Dropping At 1 Corner / 2

es / 4 Surfaces

Height (cm) 40 (ORION SPEC:25)

Container Stuffing

156

Sets/40' container

G-17 Cabinet Material Cabinet Cabinet Front PS 94V0 DECABROM

Cabinet Rear PS 94V0 DECABROM

PCB Non-Halogen Demand

Eyelet Demand Yes

G-18 Environment Pb Free Lead-free Solder No

Cd Free No

A3-5

B1-1

1. REMOVAL OF ANODE CAP

Read the following NOTED items before starting work.

After turning the power off there might still be a potential

voltage that is very dangerous. When removing the

Anode Cap, make sure to discharge the Anode Cap's

potential voltage.

Do not use pliers to loosen or tighten the Anode Cap

terminal, this may cause the spring to be damaged.

REMOVAL

1. Follow the steps as follows to discharge the Anode Cap.

(Refer to Fig. 1-1.)

Connect one end of an Alligator Clip to the metal part of a

flat-blade screwdriver and the other end to ground.

While holding the plastic part of the insulated Screwdriver,

touch the support of the Anode with the tip of the

Screwdriver.

A cracking noise will be heard as the voltage is discharged.

Flip up the sides of the Rubber Cap in the direction of the

arrow and remove one side of the support.

(Refer to Fig. 1-2.)

DISASSEMBLY INSTRUCTIONS

GND on the CRT

Screwdriver

Alligator Clip

Support

CRT

GND on the CRT

Rubber Cap

CRT

Support

Fig. 1-1

Fig. 1-2

3. After one side is removed, pull in the opposite direction to

remove the other.

NOTE

Take care not to damage the Rubber Cap.

INSTALLATION

1. Clean the spot where the cap was located with a small

amount of alcohol. (Refer to Fig. 1-3.)

Location of Anode Cap

Fig. 1-3

NOTE

Confirm that there is no dirt, dust, etc. at the spot where

the cap was located.

Arrange the wire of the Anode Cap and make sure the

wire is not twisted.

Turn over the Rubber Cap. (Refer to Fig. 1-4.)

Fig. 1-4

4. Insert one end of the Anode Support into the anode button,

then the other as shown in Fig. 1-5.

Confirm that the Support is securely connected.

Put on the Rubber Cap without moving any parts.

CRT

Support

Fig. 1-5

B2-1

Masking Tape

(Cotton Tape)

DISASSEMBLY INSTRUCTIONS

REMOVAL

Put the Masking Tape (cotton tape) around the Flat

Package IC to protect other parts from any damage.

(Refer to Fig. 2-1.)

Fig. 2-1

NOTE

REMOVAL AND INSTALLATION OF

FLAT PACKAGE IC

Some ICs on the PCB are affixed with glue, so be

careful not to break or damage the foil of each IC leads

or solder lands under the IC when removing it.

NOTE

Masking is carried out on all the parts located within 10

mm distance from IC leads.

Blower type IC

desoldering machine

Heat the IC leads using a blower type IC desoldering

machine. (Refer to Fig. 2-2.)

Fig. 2-2

NOTE

Do not add the rotating and the back and forth

directions force on the IC, until IC can move back and

forth easily after desoldering the IC leads completely.

When IC starts moving back and forth easily after

desoldering completely, pickup the corner of the IC using a

tweezers and remove the IC by moving with the IC

desoldering machine. (Refer to Fig. 2-3.)

Blower type IC

desoldering

machine

Fig. 2-3

Tweezers

Peel off the Masking Tape.4.

Absorb the solder left on the pattern using the Braided

Shield Wire. (Refer to Fig. 2-4.)

NOTE

Do not move the Braided Shield Wire in the vertical

direction towards the IC pattern.

Braided Shield Wire

Soldering Iron

Fig. 2-4

IC pattern

B2-2

DISASSEMBLY INSTRUCTIONS

Supply soldering

from upper position

to lower position

Supply the solder from the upper position of IC leads

sliding to the lower position of the IC leads.

(Refer to Fig. 2-6.)

Fig. 2-6

Soldering IronSolder

Absorb the solder left on the lead using the Braided Shield

Wire. (Refer to Fig. 2-7.)

Fig. 2-7

Soldering Iron

Braided Shield Wire

NOTE

Do not absorb the solder to excess.

When bridge-soldering between terminals and/or the

soldering amount are not enough, resolder using a Thin-tip

Soldering Iron. (Refer to Fig. 2-8.)

Fig. 2-8

Thin-tip Soldering Iron

NOTE

When the IC leads are bent during soldering and/or

repairing, do not repair the bending of leads. If the

bending of leads are repaired, the pattern may be

damaged. So, always be sure to replace the IC in this

case.

Finally, confirm the soldering status on four sides of the IC

using a magnifying glass.

Confirm that no abnormality is found on the soldering

position and installation position of the parts around the IC.

If some abnormality is found, correct by resoldering.

Solder temporarily

Soldering Iron

INSTALLATION

Take care of the polarity of new IC and then install the new

IC fitting on the printed circuit pattern. Then solder each

lead on the diagonal positions of IC temporarily.

(Refer to Fig. 2-5.)

Fig. 2-5

Solder temporarily

SERVICE MODE LIST

This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.

To enter the Service Mode, press both set key and remote control key for more than 1 second.

Set Key

Remocon Key Operations

VOL. (-) MIN

Releasing of V-CHIP PASSWORD.

VOL. (-) MIN

Initialization of the factory.

NOTE:

Do not use this for the normal servicing.

If you set a factory initialization, the memories are reset such as the channel setting,

and the POWER ON total hours.

VOL. (-) MIN

POWER ON total hours is displayed on the screen.

Refer to the "CONFIRMATION OF HOURS USED".

Can be checked of the INITIAL DATA of MEMORY IC.

Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

VOL. (-) MIN 8

Writing of EEPROM initial data.

NOTE: Do not use this for the normal servicing.

VOL. (-) MIN

Display of the Adjustment MENU on the screen.

Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).

CONFIRMATION OF HOURS USED

POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.

NOTE: If you set a factory initialization, the total hours is reset to "0".

Set the VOLUME to minimum.

Press both VOL. DOWN button on the set and Channel

button (6) on the remote control for more than 1 second.

After the confirmation of using hours, turn off the power.

ADDRESS DATA

INIT 00 50

CRT ON 0010

FIG. 1

Initial setting content of MEMORY IC.

POWER ON total hours.

= (16 x 16 x 16 x thousands digit value)

+ (16 x 16 x hundreds digit value)

+ (16 x tens digit value)

+ (ones digit value)

C-1

WHEN REPLACING EEPROM (MEMORY) IC

If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to

ensure correct data settings while making reference to TABLE 1.

Table 1

10.

11.

The unit will now have the correct DATA for the new MEMORY IC.

Enter DATA SET mode by setting VOLUME to minimum.

Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 1 second.

ADDRESS and DATA should appear as FIG 1.

ADDRESS is now selected and should "blink". Using the VOL. UP/DOWN button on the remote, step through the ADDRESS

until required ADDRESS to be changed is reached.

Press ENTER to select DATA. When DATA is selected, it will "blink".

Again, step through the DATA using VOL. UP/DOWN button until required DATA value has been selected.

Pressing ENTER will take you back to ADDRESS for further selection if necessary.

Repeat steps 3 to 6 until all data has been checked.

When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.

After the data input, set to the initializing of shipping.

Turn POWER on.

Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 1 second.

After the finishing of the initializing of shipping, the unit will turn off automatically.

NOTE: No need setting for after INI 1F due to the adjustment value.

50 E8 0A 44 5E B3 24 B7 3D AC

+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F

INI

70 00 00 00 00 06 00 3F 0F10 00 0D E2 A8 21 42 00

00 AA 04 80 80 80 59

ELECTRICAL ADJUSTMENTS

D-1

FUNCTION

CONTRAST CENT

CONTRAST MIN

COLOR MAX

COLOR CENTER

COLOR MIN

TINT

SHARPNESS

Cb DELAY FINE

Cr DELAY FINE

Cb PEDESTAL ADJ

Cr PEDESTAL ADJ

E/W PARABOLA

E/W CORNER

E/W TRAPEZIUM

LEVEL

SEPARATION1

SEPARATION2

READ DATA

1. ADJUSTMENT PROCEDURE

Read and perform these adjustments when repairing the

circuits or replacing electrical parts or PCB assemblies.

CAUTION

•

Use an isolation transformer when performing any service

on this chassis.

Before removing the anode cap, discharge electricity

because it contains high voltage.

When removing a PCB or related component, after

unfastening or changing a wire, be sure to put the wire

back in its original position.

When you exchange IC and Transistor for a heat sink,

apply the silicon grease on the contact section of the heat

sink. Before applying new silicon grease, remove all the

old silicon grease. (Old grease may cause damages to the

IC and Transistor.)

2. BASIC ADJUSTMENTS

Prepare the following measurement tools for electrical

adjustments.

2-1: CONSTANT VOLTAGE

Place the set with Aging Test for more than 5 minutes.

Set condition is AV MODE without signal.

Connect the digital voltmeter to the TP003.

Adjust the VR502 until the digital voltmeter is 135 ± 0.5V.

1. Oscilloscope

2. Digital Voltmeter

3. Multi-sound Generator

4. Pattern Generator

On-Screen Display Adjustment

1. In the condition of NO indication on the screen.

Press the VOL. DOWN button on the set and the Channel

button (9) on the remote control for more than 1 second to

appear the adjustment mode on the screen as shown in

Fig. 1-1.

Fig. 1-1

Use the Channel UP/DOWN button or Channel button

(0-9) on the remote control to select the options shown

in Fig. 1-2.

Press the MENU button on the remote control to end the

adjustments.

FUNCTION

OSD H

CUT OFF

H. VCO

H. PHASE

AFC GAIN

V. SHIFT

H. SIZE

V. SIZE

V. LINEARITY

VS CORRECTION

DRIVE R

DRIVE B

R CUT OFF

G CUT OFF

B CUT OFF

BRIGHT MAX

BRIGHT CENT

BRIGHT MIN

CONTRAST MAX

NO.

Fig. 1-2

NO.

00 OSD 28

2-4: FOCUS

Receive the monoscope pattern.

Turn the Focus Volume fully counterclockwise once.

Adjust the Focus Volume until picture is distinct.

2-3: WHITE BALANCE

NOTE: Adjust after performing CUT OFF adjustment.

Place the set with Aging Test for more than 10 minutes.

Receive the gray scale pattern from the Pattern Generator.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (12) on the remote control to

select “R. BIAS”.

Press the CH. UP/DOWN button on the remote control to

select the “R. BIAS”, “G. BIAS”, “B. BIAS”, “B. DRIVE” or

“G. DRIVE”.

Adjust the VOL. UP/DOWN button on the remote control

to whiten the R. BIAS, G. BIAS, B. BIAS, B. DRIVE, and

G. DRIVE at each step tone sections equally.

Perform the above adjustments 5 and 6 until the white

color is looked like a white.

2-2: CUT OFF

Place the set with Aging Test for more than 15 minutes.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (01) on the remote control to

select "CUT OFF".

Adjust the Screen Volume until a dim raster is obtained.

2-5: HORIZONTAL PHASE

Receive the monoscope pattern.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (03) on the remote control to

select “H. PHAS”.

Press the VOL. UP/DOWN button on the remote control

until the SHIFT quantity of the OVER SCAN on right and

left becomes minimum.

ELECTRICAL ADJUSTMENTS

D-2

2-8: VERTICAL SIZE

Receive the monoscope pattern.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (07) on the remote control to

select “V. SIZE”.

Press the VOL. UP/DOWN button on the remote control

until the SHIFT quantity of the OVER SCAN on upside and

downside becomes 9 ± 2%.

2-7: VERTICAL POSITION

Receive the monoscope pattern.

Using the remote control, set the brightness and contrast

to normal position.

Adjust the VR401 until the horizontal line becomes fit to

the notch of the shadow mask.

2-9: VERTICAL LINEARITY

NOTE: Adjust after performing adjustments in section 2-8.

After the adjustment of Vertical Linearity, reconfirm

the Vertical Position and Vertical Size adjustments.

Receive the monoscope pattern.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (08) on the remote control to

select “V. LIN”.

Press the VOL. UP/DOWN button on the remote control

until the SHIFT quantity of the OVER SCAN on upside and

downside becomes minimum.

2-6: HORIZONTAL SIZE

Receive the monoscope pattern.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (06) on the remote control to

select “H. SIZE”.

Press the VOL. UP/DOWN button on the remote control

until the SHIFT quantity of the OVER SCAN on right and

left becomes 10%.

2-13: SEPARATION 1, 2

Set the multi-sound signal generator for each different

L-ch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz)

and receive the RF.

Connect the oscilloscope to the Audio Out Jack.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (34) on the remote control to

select “SEP 1”.

Press the VOL. UP/DOWN button on the remote control

to adjust it until the audio output wave becomes a fine

sine wave.

Press the CH UP button once the set to "SEP 2" mode.

Then perform the above adjustment 4.

Method (1)

Set the multi-sound signal generator L-ch=1KHz, R-ch

=Non input and receive the RF.

Connect the oscilloscope to the Audio Out Jack (R-ch).

Press the AUDIO SELECT button on the remote control

to set to the stereo mode.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (34) on the remote control to

select “SEP 1”.

Press the VOL. UP/DOWN button on the remote control

to adjust it until the R-ch output becomes minimum.

Set the multi-sound signal generator L-ch=Non input,

R-ch=1KHz and receive the RF.

Connect the oscilloscope to the Audio Out Jack (L-ch).

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (35) on the remote control to

select “SEP 2”.

Press the VOL. UP/DOWN button on the remote control

to adjust it until the L-ch output becomes minimum.

Method (2)

Please do the method (1) or method (2) adjustment.

2-10: LEVEL

Receive the VHF HIGH (70dB).

Connect the AC voltmeter to pin 6 of CP101.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (33) on the remote control to

select "LEVEL".

Press the VOL. UP/DOWN button on the remote

control until the AC voltmeter is 75 ± 2mV.

2-11: CORNER

Receive the crosshatch signal from the Pattern Generator.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (31) on the remote control to

select “CORNER”.

Press the VOL. UP/DOWN button on the remote control

until the right and left vertical lines are straight.

2-12: TRAPEZIUM

Receive the crosshatch signal from the Pattern Generator.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (32) on the remote control to

select “TRAPEZIUM”.

Press the VOL. UP/DOWN button on the remote control

until the both vertical lines of the screen become parallel.

+ 32 hidden pages