Sony KV-XA21M83 Manual de usuario

MODEL COMMANDER DEST. CHASSIS NO.

KV-XA21M83 RM-952 India SCC-U60A-A

KV-XA21M93 RM-952 India SCC-U60B-A

KV-XA21M83 RM-952 Vietnam SCC-U56D-A

KV-XA51M61 RM-952 Indonesia SCC-U59A-A

KV-XA21N93 RM-915 Philippines SCC-U61A-A

KV-XA21P80 RM-952 ME SCC-U48M-A

TRINITRON

COLOR TV

SERVICE MANUAL BG-3R

RM-915 RM-952

123

789

POWER

DISPLAY

VIDEO

MUTING

MTS

SOUND

MODE

FAVORITE

WAKE UP

SLEEP

CABLE

AUTO

PROGRAM

ADD/

ERASE

JUMP

ENT

CHVOL

SELECT

PIC MODE

123

789

÷0

JUMP

SOUND

MODE

FAVORITE

PROGRÁ

CHASSIS

MODEL COMMANDER DEST. CHASSIS NO.

– 2 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

SPECIFICATIONS

(KV-XA21P80/XA21N93)

Note

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

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

Television system B/G KV-XA21P80

M KV-XA21N93

Color system PAL, PAL 60, NTSC4.43, NTSC3.58 (AV IN) KV-XA21P80

NTSC3.58, PAL*, PAL 60*, SECAM*, NTSC4.43* *AV IN only KV-XA21N93

Stereo/Bilingual system MTS KV-XA21N93

Channel coverage

B/G VHF: E2 to E12 / UHF: E21 to E69 / CATV: S01 to S03, S1 to S41 KV-XA21P80

MVHF: 2 to 13 / UHF: 14 to 69 / CATV: 1 to 125 KV-XA21N93

˘˘

˘(Antenna) 75-ohm external terminal

Audio output (speaker) 5W + 5W KV-XA21P80

3W + 3W KV-XA21N93

3D Woofer 9W KV-XA21N93 only

Number of terminal

D(Video) Input: 2 Output: 1

Phono jacks; 1 V

P-P

, 75 ohms

≥Audio Input: 2 Output: 1 Phono jacks; 500 mVrms

2(Headphone) Output: 1 Stereo minijack

Picture tube 21 inch

Tube size (cm) 54 Measured diagonally

Screen size (cm) 51 Measured diagonally

Dimension (w/h/d, mm) 640 ×452 ×496 KV-XA21P80

640 ×482 ×496 KV-XA21N93

Mass (kg) 26 KV-XA21P80

28 KV-XA21N93

Design and specifications are subject to change without notice.

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.

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.

– 3 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

SPECIFICATIONS

(Except KV-XA21P80/XA21N93 )

Note

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

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

Television system B/G, I, D/K, M

Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58

Stereo/Bilingual system Nicam Stereo/ Bilingual B/G, I, D/K; A2 Stereo/Bilingual B/G KV-XA21M93/XA51M61

Teletext language English, Arabic, French KV-XA51M61 only

Channel coverage

B/G VHF: E2 to E12 / UHF: E21 to E69 / CATV: S01 to S03, S1 to S41

IUHF: B21 to B68 / CATV: S01 to S03, S1 to S41

D/K VHF: C1 to C12, R1 to R12 / UHF: C13 to C57, R21 to R60 /

CATV: S01 to S03, S1 to S41, Z1 to Z39

MVHF: A2 to A13 / UHF: A14 to A79 /

CATV: A-8 to A-2, A to W+4, W+6 to W+84

˘˘

˘(Antenna) 75-ohm external terminal

Audio output (speaker) 3W + 3W except KV-XA51M61

5W + 5W KV-XA51M61 only

3D WOOFER 9W except KV-XA51M61

Number of terminal

D(Video) Input: 2 Output: 1

Phono jacks; 1 VP-P, 75 ohms

≥Audio Input: 2 Output: 1 Phono jacks; 500 mVrms

2(Headphone) Output: 1 Stereo minijack

Picture tube 21 inch Except KV-XA51M61

Tube size (cm) 54 Measured diagonally

Screen size (cm) 51 Measured diagonally

Picture tube KV-XA51M61

Tube size (mm) 545 Measured diagonally

Screen size (mm) 507 Measured diagonally

Dimension (w/h/d, mm) 620 ×482 ×496 except KV-XA51M61

620 x 452 x 496 KV-XA51M61

Mass (kg) 26 KV-XA51M61

28 except KV-XA51M61

Design and specifications are subject to change without notice.

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.

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.

– 4 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

TABLE OF CONTENTS

Section Title Page Section Title Page

SELF DIAGNOSTIC FUNCTION ........................... 5

1. GENERAL ........................................................ 8

2. DISASSEMBLY

2-1. 3D Speaker Box Removal ....................................... 36

2-2. Rear Cover Removal ............................................... 36

2-3. Speaker Removal .................................................... 36

2-4. Chassis Assy Removal ............................................ 36

2-5. F, H4 and K2 Boards Removal ............................... 36

2-6. J3 Board and Terminal Bracket Removal ............... 36

2-7. Service Position ...................................................... 37

2-8. Replacement Of Part ............................................... 37

2-8-2. Power Button ................................................ 37

2-8-1. Light Guide .................................................. 37

2-9. Picture Tube Removal ............................................. 37

3. SET-UP ADJUSTMENTS

3-1. Beam Lading ........................................................... 39

3-2. Convergence Adjusment ......................................... 40

3-3. Focus Adjustment.................................................... 42

3-4. G2 (Screen) and White Balance Adjustement ........ 42

4. CIRCUIT ADJUSTMENTS

4-1. Adjustment with Commander ................................. 43

4-2. Adjustment Method ................................................ 43

4-3. Picture Quality Adjustment .................................... 49

4-4. Deflection Adjustment ............................................ 49

4-5. A Board Ajustment After IC003 (memory)

Replacement ............................................................ 49

4-6. Picture Distortion Adjustment ................................ 50

5. DIAGRAMS

5-1. Block Diagram ......................................................... 51

5-2. Circuit Board Location ............................................ 52

5-3. Schematic Diagrams................................................. 52

(1) Schematic Diagrams of F, J3 and H4 Boards ... 55

(2) Schematic Diagram of A Board ....................... 56

(3) Schematic Diagram of C1 Board ...................... 73

(4) Schematic Diagrams of K2 and V1 Boards ..... 75

Board Mark List ...................................................... 77

5-4. Voltage Measurements ............................................. 80

5-5. Waveforms ................................................................ 82

5-6. Printed Wiring Boards and Parts Location .............. 83

5-7. Semiconductors ........................................................ 91

6. EXPLODED VIEWS

6-1. Picture Tube .............................................................. 93

6-2. Chassis ...................................................................... 95

7. ELECTRICAL PARTS LIST ........................... 97

– 5 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

The units in this manual contain a self-diagnostic function.If an error occurs, the STANBY/TIMER lamp will

automatically begin to flash.

The number of times the lamp flashes translates to a probable source of the problem.A definition of the STANBY/

TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error

symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in

memory to reveal past problems and how often these problems occur.

1. DIAGNOSTIC TEST INDICATORS

When an errors 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.

Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a

“0”. Diagnostic

Item

Description

• Power does not

turn on

• +B overcurrent

(OCP) or

overvoltage

(OVP)

• Vertical

deflection

stopped

• Horizontal

deflection

overdrive

• White balance

failure (no

PICTURE)

• Micro reset

Detected

Symptoms

• Power does not come

on.

• No power is supplied to

the TV.

• AC power supply is

faulty.

• Power does not come

on.

• Load on power line is

shorted.

• Has entered standby

state after horizontal

raster.

• Vertical deflection

pulse is stopped.

• Power line is shorted or

power supply is

stopped.

• No raster is generated.

• CRT cathode current

detection reference

pulse output is small.

• Power is shut down

shortly, after this return

back to normal.

• Detect Micro latch up.

Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.

The symptom that is diagnosed first by the microcontroller is displayed on the screen.

Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.

*IC700 out is faulty (C1 board).

SELF DIAGNOSTIC FUNCTION

No. of times

STANDBY/TIMER

lamp flashes

Does not light

2 times

5 times

—

Self-diagnostic

display/Diagnostic

result

—

002:000 or

002:001~255

003:001~255

004:001~255

at the same time

005:000 or

005:001~225

101:00 or

101:001~225

Probable

Cause

Location

• Power cord is not plugged

in.

• Fuse is burned out F4601

(F)

• H.OUT Q511 is shorted.

(A board)

• IC700 is shorted

(C1 board)

• -13V is not supplied.

(A board)

• IC 503 faulty (A board)

• G2 is improperly adjusted.

(Note 2)

• CRT problem.

• IC700 out is faulty

(C1 board)

• IC301 is faulty. (A board)

• No connection A board to

C1 board.

• Discharge CRT (C1 Board)

• Static discharge

• External noise

– 6 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT

3. STOPPING THE STANDBT/TIMER FLASH

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER

lamp from flashing.

4. SELF-DIAGNOSTIC SCREEN DIPLAY

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be con-

firmed, it is possible to bring up past occurances of failure for confirmation on the screen:

[To Bring Up Screen Test]

In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

[Screendisplay] /channel [5] /Sound volume [-] /Power ON

Note that this differs from entering the service mode (mode volume [+]).

Self-Diagnosis screen display

STANDBY/SLEEP lamp

Lamp ON 0.3 sec. Lamp OFF 3 sec.

Lamp OFF 0.3 sec.

2 times

3 times

Diagnostic Item Flash Count*

+B overcurrent/overvoltage 2 times

Vertical deflection stopped

White balance failure 5 times

* One flash count is not used for self-diagnostic.

002 : 000

003 : 000

004 : 000

005 : 001

Numeral "0" means that no fault has been detected.

Numeral "1" means a fault has been detected.

101 : 000

SELF DIAGNOSTIC

–7 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

5. HANDLINGOF SELF-DIAGNOSTIC SCREEN DISPLAY

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic

screen during repairs.When you have completed the repairs, clear the result display to “0”.

Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after

completion of the repairs.

[Clearing the result display]

To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the

diagnostic screen is being displayed.

Channel [8] /0

[Quitting Self-diagnostic screen]

To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.

6. SELF-DIAGNOSTIC CIRCUIT

[+BovercurrentªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to

ON and the voltage to pin 18 of IC301 should go down when V.SYNC is more than

seven verticals in a period, the unit will automatically turn off.

[Verticaldeflectionstopped] Occurs when an absence of the vertical deflection pulse is detected by Q509 and

IC001 shut down the power supply.

[Verticaldeflectionovercurrent] Occurs when an overcurrent on V drive line is detected by Q507.Power supply will

be shut down when detect this by IC001.

[ hitebalancefailure] If the RGB levels* do not balance or become low level within 5 seconds, this error

will be detected by IC301.TV will stay on, but there will be no picture.

* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)

IC301

Y/CHROMA JUNGLE

FROM

CRT

[V] Q509/507

IC001

SYSTEM IC003

MEMORY

IK-IN

MP/

PROTECT O-LED

IO-8DAT B-DAT

IO-SDAT

521

18 51

SDA 35

FROM

[+B] Q604 C6

– 8 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

SECTION 1-2

GENERAL

(except KV-XA21N93)

The operating instruction mentioned here are partial abstracts

from the Operating Instruction Manual.The page numbers of

the Operating Instruction Manual remain as in the manual.

WARNING

• Dangerously high voltages are present inside the TV.

• Operate the TV only between 110 – 240 V AC.

To prevent fire or shock hazard, do not expose

the TV to rain or moisture.

Do not operate the TV if any liquid or solid object

falls into it. Have it checked immediately by

qualified personnel only.

Do not open the cabinet and the rear cover of the

TV as high voltages and other hazards are

present inside the TV. Refer servicing and

disposal of the TV to qualified personnel.

Your TV is recommended for home use only.

Do not use the TV in any vehicle or where it may

be subject to excessive dust, heat, moisture or

vibrations.

Do not block the ventilation openings of the TV.

Do not install the TV in a confined space, such

as a bookcase or built-in cabinet.

For children’s safety, do not leave children alone

with the TV. Do not allow children to climb onto

it.

Do not plug in too many appliances to the same

power socket. Do not damage the power cord.

Clean the TV with a dry and soft cloth.

Do not use benzine, thinner, or any other chemicals

to clean the TV. Do not scratch the picture tube.

For your own safety, do not touch any part of the

TV, the power cord and the antenna cable during

lightning storms.

Pull the power cord out by the plug. Do not pull

the power cord itself. Disconnect the TV before

moving it or if you are not going to use it for

several days.

Using Your New TV

Getting Started

Step 1

Connect the antenna

If you wish to connect a VCR, see the Connecting a VCR diagram below.

Using Your New TV

IEC connector

(not supplied)

To video and

audio outputs (yellow)

-L (MONO) (white)

-R (red)

Audio/Video cable (not supplied)

Rear of TV

Connecting a VCR

To watch the video input, press t(see page 13).

: Signal flow

Antenna cable

(not supplied)

To t1 (video input)

Antenna cable (not supplied)

To antenna output

VCR

Rear of TV

VIDEO

VIDEO IN

VIDEO OUT

AUDIO

L(MONO)

To 8(antenna)

–9 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

Using Your New TV

Step 2

Note

•Do not use old batteries nor use different types of batteries together.

Front of TV

Notes

•If you connect a monaural VCR, connect the yellow plug to (the

yellow jack) and the black plug to -L (MONO) (the white jack).

•If you connect a VCR to the 8(antenna) terminal, preset the signal

output from the VCR to the program number 0 on the TV.

•When no signal is input from the connected video equipment, the TV

screen becomes blue.

CAUTION

•Do not connect the power cord until you have completed making all other

connections; otherwise a minimum leakage current might flow through

the antenna and other terminals to ground.

•To avoid battery leakage and damage to the remote, remove the batteries

from the remote if you are not going to use it for several days. If any

liquid that leaks from the batteries touches you, immediately wash it

away with water.

Insert the batteries

into the remote

Step 3

Preset the channels automatically

Tips

•If you want to stop automatic channel presetting, press SELECT twice.

•If your TV has preset an unwanted channel or cannot preset a particular

channel, then preset your TV manually (see page 10).

Note (except KV-XA21P80/XA51M61)

•During automatic channel presetting, your TV screen will indicate

“B/G”, “I”, “D/K”or “M”for the TV system.

AUTO

PROGR

VHF LOW B/G

L(MONO) R

PROGR

SELECT AUTO

PROGR

Using Your New TV

Connecting the 3D WOOFER

(except KV-XA21P80/XA51M61)

You can enjoy high quality sound by connecting the 3D WOOFER.

1Align the front of the 3D WOOFER to corners A and B of your TV. Place the

3D WOOFER into the footholds and adjust it until it is stable.

2Connect the wires to the 3D WOOFER (8Ω) terminals at the rear of your TV.

The red wire should be connected to the 3red terminal and the black wire

to the #black terminal.

Notes

•Connect only the supplied 3D WOOFER; otherwise your TV may

malfunction.

•Unplug your TV from the wall outlet when connecting the 3D WOOFER.

•To prevent a malfunction caused by a short circuit of the terminals, make

sure that none of the 3D WOOFER wire strands stick out, making contact

with the neighbouring 3D WOOFER terminal.

Black

wire

Red

wire

WOOFER (8 )

– +

WOOFER(8 )

– +

3D WOOFER

Corner A Corner B

–10 –

KV-XA21M83/XA21M93/XA51M61/XA21P80

RM-952

KV-XA21N93

RM-915

Using Your New TV

Connecting optional components

You can connect optional audio/video components, such as a VCR, multi disc player,

camcorder, video game or stereo system.

To watch the video input of the connected equipment, press t(see page 13).

Connecting a camcorder/video game equipment

using the t(video input) jacks

Note

•You can also connect video equipment to the t1 (video input) jack at

the rear of your TV.

Connecting audio/video equipment using the T

(monitor output) jacks

Note

•If you connect a monaural VCR, connect the yellow plug to (the yellow

jack) and the black plug to -L (MONO) (the white jack).

(yellow)

-L (MONO)

(white)

-R (red)

Rear of TV

antenna

output

To video and

audio inputs

Audio system

audio

inputs

VCR

: Signal flow

To T

(monitor output)

Antenna cable (not supplied)

Audio/Video cable (not supplied)

L(MONO)

Front of TV

Camcorder

Video game

equipment

To video and

audio outputs

: Signal flow

(video input)

Audio/Video cable (not supplied)

L(MONO)R

L(MONO) R

PROGR

SELECT AUTO

PROGR

Using Your New TV

Securing the TV

To prevent the TV from falling, secure the TV using one of the following methods:

With the supplied screws, attach the band to the TV stand and to the rear of

the TV using the provided hole.

Put the cord or chain through the clamps to secure the TV against a wall or

pillar.

Note

•Use only the supplied screws. Use of other screws may damage the TV.

3.8 mm

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