Sony TRINITRON KV-G21L3 Manual de usuario

TRINITRON

COLOR TV

MODEL COMMANDER DEST. CHASSIS NO.

KV-G21L3 RM-883 ME SCC-J35Y-A

SERVICE MANUAL

MODEL COMMANDER DEST. CHASSIS NO.

BG-1S (D)

CHASSIS

– 2 –

KV-G21L3

RM-883

CAUTION

SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE

AND THE ANODE CAP TO THE METAL CHASSIS, CRT

SHIELD, OR CARBON PAINTED ON THE CRT, AFTER

REMOVING THE ANODE.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK !ON

THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN

THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.

REPLACE THESE COMPONENTS WITH SONY PARTS

WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS

MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

SPECIFICATIONS

Note

Power requirements 110-240 V AC, 50/60 Hz

Power consumption (W) Indicated on the rear of the TV

Television system B/G

Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 (AV IN)

Channel coverage VHF: E2 to E12/UHF: E21 to E69/CATV: S01 to S03, S1 to S41

Audio output (speaker) 3W

Inputs Antenna: 75 ohms

VIDEO IN jacks: phono jacks

Video: 1 Vp-p, 75 ohms

Audio: 500mVrms, high impedance

Outputs Earphone jack: minijack

MONITOR OUT jacks: phono jacks

Video: 1 Vp-p, 75 ohms

Audio: 500 mVrms

Picture tube 21 in.

Tube size (cm) 54 Measured diagonally

Screen size (cm) 51 Measured diagonally

Dimensions (w/h/d, mm) 527 ×464 ×471

Mass (kg) 22

Design and specifications are subject to change without notice.

– 3 –

KV-G21L3

RM-883

TABLE OF CONTENTS

Section Title Page Section Title Page

5. CIRCUIT ADJUSTMENTS

5-1. Adjustment With Commander ................................. 19

5-2. Adjustment Method ................................................. 20

5-3. A Board, Adjustment After IC003

(MEMORY) Replacement ....................................... 23

5-4. Picture Distortion Adjustment ................................. 23

6. DIAGRAMS

6-1. Block Diagram ......................................................... 25

6-2. Circuit Boards Location .......................................... 27

6-3. Schematic Diagrams and Printed Wiring Boards ... 27

(1) Schematic Diagram of A Board .............................. 31

(2) Schematic Diagram of C Board ............................. 35

6-4. Semiconductors........................................................ 37

7. EXPLODEDVIEW......................................................... 39

8. ELECTRICAL PARTS LIST....................................... 41

1. GENERAL........................................................................ 4

2. DISASSEMBLY

2-1. Rear Cover Removal................................................ 11

2-2. A Board Removal .................................................... 11

2-3. Service Position ....................................................... 11

2-4. Replacement of parts ............................................... 12

2-4-1. Replacement of Multi Button........................... 12

2-4-2. Replacement of Light Guide and Power Button

.................................................................. 12

2-5. Demagnetization Coil Removal .............................. 12

2-6. Picture Tube Removal.............................................. 13

3. SET-UP ADJUSTMENTS

3-1. Beam Landing .......................................................... 14

3-2. Convergence............................................................. 15

3-3. Focus Adjustment .................................................... 17

3-4. G2 (Screen) and White Balance Adjustment .......... 17

4. SELF DIAGNOSIS FUNCTION................................ 18

– 4 –

KV-G21L3

RM-883

SECTION 1

GENERAL

The operating instructions mentioned here are partial abstracts from the

Operating Instructions Manual. The page numbers of the Operating

Instruction Manual remain as in the manual.

MONITOR

OUT

AUDIO VIDEO

VIDEO

B/G I D/K M

TV SYSTEM AUTO PROGR

TV SYSTEM

AUTO PROGR

pKV-J21MF3

–5 –

KV-G21L3

RM-883

Getting Started

-EN

MONITOR

OUT

AUDIOVIDEO

VIDEO

Connections

Connecting a VHF antenna or a combination VHF/UHF antenna

— 75-ohm coaxial cable (round)

Attach an optional IEC antenna connector to the 75-ohm coaxial cable.

Plug the connector into the (antenna) socket at the rear of the TV.

Getting Started

Rear of TV Rear of TV

Connecting an indoor antenna

Note

•You are advised to use an outdoor antenna for better reception.

On a wall

Getting Started

-EN

Connecting optional equipment

You can connect optional audio/video equipment to your TV such as a VCR, multi disc player, camcorder, video

game or stereo system.

Connecting video equipment using video input jacks

pKV-G21L3

When connecting a monaural VCR

Connect the yellow plug to VIDEO and the black plug to AUDIO-L (MONO).

pKV-G21L3

When using the video input jacks

Do not connect video equipment to the video input jacks at the front and the rear of your TV simultaneously; otherwise the picture will

not be displayed properly on the screen.

to antenna

output

VIDEO IN

Rear of TV

to antenna socket

VIDEO

AUDIO

VIDEO

MONITOR

OUT

: Signal flow

VCR

to video

and audio

outputs

Front of TV

VIDEO

VIDEO INPUT

AUDIO

Camcorder

to video and

audio outputs

: Signal flow

–6 –

KV-G21L3

RM-883

Getting Started

-EN

Connecting audio/video equipment using MONITOR OUT jacks

When recording through the MONITOR OUT jacks

If you change the channel or video input while recording with a VCR, the channel or video input you are recording also will be changed.

VIDEO

AUDIO

VIDEO

MONITOR

OUT

Rear of TV

MONITOR OUT

pKV-G21L3

to video

and audio

inputs

to antenna socket

to antenna

output VCR or

Audio system

: Signal flow

Getting Started

-EN

Presetting channels

Presetting channels manually using the

buttons on the TV

1Press MANUAL PROGR.

2Press PROGR +/–on the remote commander

until the required program position

appears on the screen.

3Press TV SYSTEM until your local TV system

appears (KV-J21MF3 only).

4Press VOLUME +/–until the required channel

picture appears on the screen.

5Press MANUAL PROGR.

If the TV system is not properly selected

(KV-J21MF3 only).

The color of the picture may be poor and/or the sound

may be noisy. In this case, select the appropriate TV

system.

1Press PROGR +/– on the remote commander to

select the program position.

2Press TV SYSTEM until the picture and sound

become normal.

Notes (KV-J21MF3 only).

•If you do not know your local TV system, consult your nearest

authorized service center or dealer.

•The setting of the TV SYSTEM is memorized for each program

position.

Disabling program positions using the

buttons on the TV

By disabling unused or unwanted program positions,

you can skip those positions when you press

PROGR +/– on the remote commander.

1Press PROGR +/–on the remote commander

until the unused or unwanted program

position appears on the screen.

2Press MANUAL PROGR.

3Press PIC MODE on the remote commander.

4Press MANUAL PROGR.

To cancel the skip setting

Preset the channel manually or automatically again.

You can preset up to 100 TV channels in numerical

sequence from program position 1 automatically.

To change the channel for a particular program

position or to receive a channel with a weak signal,

you can preset the channel manually. You can also

disable program position.

You can preset TV channels using the buttons on the

TV or the remote commander.

Presetting channels automatically

using the buttons on the TV

Front of TV

1Press POWER to turn on the TV.

When the TV is turned on in standby mode, press

POWER on the remote commander.

2Press TV SYSTEM until your local TV system

appears (KV-J21MF3 only).

3Press AUTO PROGR.

To start presetting channels automatically

from the specified program position

1Press MANUAL PROGR.

2Press TV SYSTEM to select your local TV system

(KV-J21MF3 only).

3Press PROGR +/–to select the program position.

4Press AUTO PROGR.

231

MANUAL PROGR

COLOR SYSTEM

SELECT

TV SYSTEM

AUTO PROGR

POWER

TV SYSTEM

B/G ID/K M

AUTO PROGR

1231

–7 –

KV-G21L3

RM-883

Getting Started

-EN

If you are not satisfied with the picture

and sound quality

You may be able to further improve the picture and

sound quality by using fine tuning as below:

1Select the program position you want to

adjust.

2Press SELECT until “MANUAL PROGRAM”

appears on the screen.

3Press + or –on the remote commander

once.

4Press DISP until “FINE”appears on the

screen.

5Press + or –continuously until you are

satisfied with the picture and sound

quality.

6Press SELECT to return to normal screen.

Getting Started

-EN

Presetting channels automatically

using the remote commander

1Press POWER to turn on the TV.

When the TV is turned on in standby mode, press

POWER on the remote commander.

2Press SELECT until “TV SYSTEM”appears

(KV-J21MF3 only).

3Press + or –to select your local TV system

(KV-J21MF3 only).

4Press SELECT until “AUTO PROGRAM”

appears.

5Press + or –.

6Press + or –.

Presetting channels manually using the

remote commander

1Press SELECT until “TV SYSTEM”appears

(KV-J21MF3 only).

2Press + or –to select your local TV system

(KV-J21MF3 only).

3Press PROGR +/–or a number button until

the required program appears on the

screen.

4Press SELECT until “MANUAL PROGRAM”

appears.

5Press + or –.

6Press + or –.

The selected channel appears on the screen.

7Press SELECT to return to normal screen.

+ or –

SELECT

POWER

1231

SELECT

TV SYSTEM : B/G

SELECT

AUTO PROGRAM

B/G I D/K M

VHF LOW B/G

SELECT

TV SYSTEM : B/G

B/G I D/K M

123

789

÷0

PROGR

JUMP

SELECT

MANUAL PROGRAM

VHF LOW B/G

SELECT

–8 –

KV-G21L3

RM-883

Operations

-EN

POWER

VIDEO

HOLD

123

789

÷0

JUMP

Watching the TV

1Press POWER to turn on the TV.

When the TV is turned on in standby mode, press

POWER on the remote commander.

2Select the TV program you want to watch.

To select a program position directly

Press the number button.

To select a two-digit program position, press “-/--”

before pressing the number buttons.

For example: to select program position 25, press

“-/--,”and then “2”and “5.”

To scan through program positions

Press PROGR +/–until the program position you

want appears.

3Press VOL +/–to adjust the volume.

Turning off the TV

To turn off the TV temporarily

Press POWER on the remote commander. The

STANDBY indicator on the TV lights up.

To turn off the TV completely

Press POWER on the TV.

If the power on the TV is turned off in standby mode,

the STANDBY indicator on the TV may remain alight for

a while.

Watching the video input

Press VIDEO/HOLD.

To watch TV

Press TV.

Switching back quickly to the previous

channel

Press JUMP.

Muting the sound

Press MUTING.

÷25

PROGR

Operations

VIDEO 1

POWER

JUMP

MUTING

POWER

VOL

Operations

-EN

DISP

REVEAL

Setting the Sleep Timer

You can set the TV to automatically turn off as you

have programmed.

Press SLEEP/TEXT CLR.

To cancel the Sleep Timer, press SLEEP/TEXT CLR

repeatedly until “SLEEP TIMER: OFF”appears, or turn

off the TV.

Changing the on-screen display

language

You can use buttons on the remote commander or the

TV to change the on-screen display language.

1Press SELECT until the screen appears as

follows:

2Press + or –to select “”.

Note

•You can also use SELECT and VOLUME +/–on the TV to

Setting the Wake Up Timer

You can set the TV to automatically turn on as you have

programmed.

1Press WAKE UP/INDEX repeatedly to set the

timer.

The on-screen display appears and the WAKE UP

indicator on the TV lights up.

2If you want a particular TV program or

video input to be displayed using the Wake

Up Timer, select the TV program or video

input.

3Press POWER on the remote commander or

set the Sleep Timer to turn off the TV in

standby mode.

To cancel the Wake Up Timer, press WAKE UP/INDEX

repeatedly until “WAKE UP TIMER: OFF”appears, or

turn off the main power of the TV.

Notes

•The Wake Up Timer starts immediately after the on-screen

display disappears.

•The last TV program position or video input just before the TV

turns into standby mode will appear when the TV is turned on

using the Wake Up Timer.

•If no buttons or controls are pressed for more than two hours

after the TV is turned on using the Wake Up Timer, the TV

automatically turns into standby mode. If you want to

continue watching the TV, press any button or control on the

remote commander or the TV.

Displaying on-screen information

Press DISP/REVEAL.

The program position, local system, and TV settings are

displayed on the screen.

: LANGUAGE /

SLEEP TIMER:30M SLEEP TIMER:60M

SLEEP TIMER:OFF SLEEP TIMER:90M

No sleep timer After 90 minutes

After 60 minutes

After 30 minutes

AUTO

B/G

DYNAMIC ≥MUSIC

WAKE UP

INDEX

After 10 minutes

No wake up timer After 12 hours

WAKE UP TIMER:10M

WAKE UP TIMER:OFF WAKE UP TIMER:12H00M

SLEEP

TEXT CLR

+ or –

SELECT

LANGUAGE / : ENGLISH

–9 –

KV-G21L3

RM-883

Operations

-EN

Using the Child Lock

feature Watching the picture

in wide mode

You can prevent a child from watching certain program

positions by using the buttons on the remote

commander.

1Select the TV program you want to lock.

2Press SELECT until “CHILD LOCK”appears

on the screen.

3Press + or –until “LOCKED”appears on the

screen.

Notes

•To unlock the program position, repeat steps 1 to 3 as above

until “LOCKED”disappears from the screen.

•To prevent your child from unlocking the program position,

keep the remote commander away from your child.

÷0

+ or –

SELECT

CHILD LOCK

LOCKED

You can adjust the display mode accordingly to fit the

programs to your TV screen size.

Press WIDE/V-ZOOM repeatedly until the wide

display mode you want appears on the screen.

WIDE/

V-ZOOM

Good-bye,Jane

Good-bye.

Good-bye,Jane

Good-bye.

WIDE

V-ZOOM

NORMAL

Normal display

mode “WIDE”mode

“V-ZOOM”mode

Operations

-EN

Adjusting the

picture

Adjusting the sound and picture settings

1Press SELECT until the item you want to

adjust appears.

Each time you press SELECT, the screen changes

as follows:

2Press + or –to adjust the item.

3To adjust other items, repeat steps 1 and 2.

Notes

•You can also use SELECT and VOLUME +/–on the TV to

adjust the sound and picture settings.

•The on-screen display for BASS, TREBLE, BALANCE and

SURROUND are available for KV-J21MF3 only.

•SURROUND is only applicable to a stereo signal. When

receiving a monaural signal, please turn off SURROUND for

the best sound

(KV-J21MF3 only)

If the picture color is abnormal when receiving

programs through the ˘(antenna) terminal

Change the “TV SYSTEM”

(KV-J21MF3 only) or “COLOR

SYSTEM”setting or adjust the “COLOR”level in the on-screen

display until the color becomes normal.

If the picture color is abnormal when receiving

programs through the video input jack

Change the “COLOR SYSTEM”setting or adjust the “COLOR”

level in the on-screen display until the color becomes normal.

Note

•Normally set “COLOR SYSTEM”to “AUTO”.

If the sound is distorted or noisy when receiving

programs through the ˘(antenna) terminal

(KV-J21MF3 only)

Change the “TV SYSTEM”setting in the on-screen display until

the sound becomes clear.

Adjusting the sound

and picture

÷0

SOUND

MODE

SELECT

PIC MODE

Selecting the sound mode

pKV-J21MF3 only

Press SOUND MODE until the mode you want

appears.

Each time you press SOUND MODE, the screen

changes as follows:

Note on the SOUND MODE button (KV-G21L3)

•The sound mode feature is unavailable for your TV. Thus, the

SOUND MODE button on the remote commander is not used

for your TV.

Selecting the picture mode

Press PIC MODE until the mode you want

appears.

Each time you press PIC MODE, the screen changes as

follows:

Note

•If you change the picture and sound mode after the following

adjustments, the adjustment changes in accordance with the

picture and sound mode.

SELECT

+ or –

SOUND

MODE

≥MUSIC ≥DRAMA ≥SPORTS ≥SOFT

PIC MODE

DYNAMIC STANDARD

SOFT

High contrast

picture Soft picture Normal

picture

Emphasize

low and high

sound effect

Emphasize

huge

audience

atmosphere

Emphasize

vocals and

background

music Emphasize

soft sound

PICTURE

COLOR BRIGHT HUE

SHARPNESS

BASS

BALANCE

SURROUND TREBLE

(Operative for

NTSC signal only)

(KV-J21MF3 only)

Front of TV

MANUAL PROGR

COLOR SYSTEM

SELECT

TV SYSTEM

AUTO PROGR

–10 –

KV-G21L3

RM-883

Additional Information

-EN

Troubleshooting

Additional Information

If you have any problems, read this manual again and

check the countermeasure for each of the symptoms

listed below.

If the problem persists, contact your nearest authorized

service center or dealer.

Snowy picture

Noisy sound

/Check the antenna.

/Check the antenna connection on the TV

and on the wall.

/Check the TV SYSTEM setting

(KV-J21MF3 only).

Dotted lines or stripes

/This may be caused by local interference

(e.g. cars, neon signs and hair dryers). Adjust

the antenna for minimum interference.

Double images or “ghosts”

/This may be caused by reflections from

nearby mountains or buildings. A highly

directional antenna may improve the picture.

No color

/Adjust the COLOR level in the on-screen

display.

/Check the COLOR SYSTEM setting.

No picture

No sound

/Press POWER.

/Check the antenna connection.

/Check the VCR connections.

/Check the power cord connection.

/Check the standby mode.

Good picture

Noisy sound

/Check the TV SYSTEM setting

(KV-J21MF3 only).

/Reduce the TREBLE level or select the

“SOFT”sound mode (KV-J21MF3 only).

Good picture

No sound

/Press VOLUME +.

/Press MUTING.

TV cabinet creaks

/Even if the picture or the sound is normal,

changes in the room temperature

sometimes make the TV cabinet expand or

contract, making a noise. This does not

indicate a malfunction.

Note on the remote commander

•The supplied remote commander is used on several models of

the TV. If you do not find instructions for some controls that

are on the remote commander, that means your TV does not

employ the features of those controls, e.g. TEXT.

Note on the TV system

•The TV SYSTEM button is not used on the KV-G21L3 model.

Notes

•When you switch on the TV, you may hear the “boon”sound

that is caused by the demagnetization of the TV. This does not

indicate a malfunction.

•The picture color may become abnormal if you change the

direction of your TV. To obtain the normal picture color, press

POWER on the TV to switch off the TV for five minutes and

then switch it on again.

WARNING

Do not install the appliance in a confined space, such as

a bookcase or built-in cabinet.

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