Sony KV-XA21M80 Manual de usuario

http://cxema.ru

MODEL COMMANDER DEST. CHASSIS NO.

CHASSIS

TRINITRON

COLOR TV

SERVICE MANUAL BG-3R

MODEL COMMANDER DEST. CHASSIS NO.

KV-XA21M80 RM-952 E SCC-U53B-A

KV-XA21M83 RM-952 ME SCC-U48D-A

KV-XA21M50 RM-952 EM SCC-U45F-A

KV-XA21M50 RM-952 E SCC-U52B-A

KV-XA21M61 RM-952 EM SCC-U45E-A

KV-XA21M61 RM-952 E SCC-U52C-A

123

789

÷0

JUMP

SOUND

MODE

FAVORITE

PRO RÁ

KV-XA21M60 RM-952 S SCC-U49D-A

KV-XA21M80 RM-952 ME SCC-U48C-A

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– 2 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/ XA21M60

RM-952

SPECIFICATIONS

N te

P wer requirements 110-240 V AC, 50/60 Hz KV-XA21M80(E)/M80(ME)/

M50(GE)/M83(ME)/M61(GE)

220-240 V AC, 50/60 Hz KV-XA21M61/M50(EM)/M60(S)

P wer c nsumpti n (W) Indica ed on he rear of he TV

Televisi n system B/G, I, D/K, M

C l r system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58

Stere /Bilingual system NICAM S ereo / Bilingual B/G, I; A2 S ereo Bilingual (German) B/G KV-XA21M61/M60 only

Channel c verage

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

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

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

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

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

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

˘ (Antenna) 75-ohm ex ernal erminal

Audi utput (Speaker) 5W + 5W

Number f terminal

D (Vide ) Inpu : 2* Ou pu : 1 Phono jacks; 1 VP-P, 75 ohms

≥ (Audi ) Inpu : 2* Ou pu : 1 Phono jacks; 500 mVrms

2 (Headph nes) Ou pu : 1 S ereo minijack

Picture tube 21 inch

Tube size (cm) 54 Measured diagonally

Screen size (cm) 51 Measured diagonally

Dimensi n (w/h/d, mm) 640 x 456 x 498

Mass (kg) 26

Design and specifica ions are subjec o change wi hou no ice.

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.

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– 3 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/XA21M60

RM-952

TABLE OF CONTENTS

Section Title Page

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

1. GENERAL ........................................................................ 7

2. DISASSEMBLY

2-1. Rear Cover Removal ................................................ 25

2-2. Speaker Removal ..................................................... 25

2-3. Chassis Assy Removal ............................................. 25

2-4. F Bracke Removal .................................................. 25

2-5. J2 Board and Terminal Bracke Removal................ 25

2-6. Service Posi ion ....................................................... 25

2-7. Replacemen of Par s ............................................... 26

2-7-1 Replacemen of Ligh Guide .............................................. 26

2-7-2 Replacemen of Power Bu on ........................................... 26

2-8. Pic ure Tube Removal .............................................. 26

2-9. Removal of Anode Cap ............................................ 27

3. SET-UP ADJUSTMENTS

3-1. Beam Landing .......................................................... 28

3-2. Convergence Adjus men ......................................... 29

3-3. Focus Adjus men .................................................... 31

3-4. G2 (Screen) and Whi e Balance Adjus men s ......... 31

4. CIRCUIT ADJUSTMENTS

4-1. Adjus men s wi h Commander ................................ 32

4-2. Adjus men Me hod ................................................. 32

4-3. Pic ure Quali y Adjus men s .................................... 37

4-4. Deflec ion Adjus men ............................................. 37

4-5. A Board Adjus men Af er IC003

(memory) Replacemen ........................................... 37

4-6. Pic ure Dis or ion Adjus men ................................. 38

Section Title Page

5. DIAGRAMS

5-1. Block Diagram .......................................................... 39

5-2. Circui Board Loca ion ............................................. 41

5-3. Schema ic Diagrams ................................................. 42

(1) Schema ic Diagrams of F, J2 and C1 Boards ..... 43

(2) Schema ic Diagram of A Board .......................... 45

(3) Schema ic Diagram of V1Board ......................... 61

5-4. Vol age Measuremen s .............................................. 65

5-5. Waveforms ................................................................ 68

5-6. Prin ed Wiring Boards and Par s Loca ion ............... 69

5-7. Semiconduc ors ......................................................... 73

6. EXPLODED VIEWS

6-1. Pic ure Tube .............................................................. 75

6-2. Chassis ...................................................................... 76

7. ELECTRICAL PARTS LIST ...................................... 77

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– 4 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/ XA21M60

RM-952

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/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 STANDBY/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 ( 2) 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)

• 2 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

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– 5 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/XA21M60

RM-952

2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT

3. STOPPING THE STANDBY/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 DISPLAY

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it

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

[T 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-Diagn sis 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 DIA NOSTIC

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– 6 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/ XA21M60

RM-952

5. HANDLING OF 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-diagn stic 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 R B 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 R B levels of the AKB detection Ref pulse that detects IK.)

IC301

Y/CHROMA JUN LE

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

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– 7 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/XA21M60

RM-952

SECTION 1

GENERAL

WARNING

• Dangerously high voltages are present inside the TV.

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

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.

lean 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.

(KV-XA21M61(EM)/XA21M50(EM)/XA21M60(S))

WARNING

• Dangerously high voltages are present inside the TV.

• Operate the TV only between 220 – 240 V A .

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.

lean 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.

(KV-XA21M61(EM)/XA21M50(EM)/XA21M60(S))

The perating instructi n menti ned here are partial abstracts

fr m the Operating Instructi n Manual. The page numbers f

the Operating Instructi n Manual remain as in the manual.

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– 8 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/ XA21M60

RM-952

Using Your New TV

L(MONO)

VIDEO

VIDEO IN

VIDEO OUT

AUDIO

VIDEO IN

VIDEO OUT

VIDEO

AUDIO

Using Your New TV

Getting Started

Step 1

Connect the antenna

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

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 14).

(Not used for these models)

: Signal flow

Antenna cable

(not supplied)

Antenna cable

(not supplied)

(yellow)

-L (MONO) (white)

-R (red)

To video

and audio

outputs Audio Video cable (not supplied)

To t 1 (video input)

To 8 (antenna)

To antenna output

: Signal flow

VCR

KV-XA21M83 XA21M80

Antenna cable (not supplied)

To antenna output

VCR

1 or 2 (video input)

Rear of TV

To 8 (antenna)

Do not install the TV in an unstable position.

Use a proper TV stand. Do not place any objects on the TV.

WARNING (continued)

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– 9 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/XA21M60

RM-952

Using Your New TV

Connecting the TWEETER

(KV-XA21M83 only)

You can enjoy high quality sound by connecting the TWEETER.

1Place the TWEETER on top of your TV

Bend the wire to hook it at the side of your TV

3Connect the wires to the TWEETER terminals at the rear of your TV The

plain wire should be connected to the 3 red terminal and the striped wire

to the # black terminal

Notes

• onnect only the supplied TWEETER; otherwise your TV may

malfunction.

• Unplug your TV from the wall outlet when connecting the TWEETER.

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

sure that none of the TWEETER wire strands stick out, making contact

with the neighbouring TWEETER terminal.

TWEETER (8 )

–

TWEETER

TWEETER (8 )

– L +– R +

Striped

wire

Plain

wire

Using Your New TV

Step

Note

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

Front of TV

Notes

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

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

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

output from the V R to the program number 0 on the TV.

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

screen becomes blue.

(Not used for these models)

• Do not connect video equipment to the t 2 (video input) jacks at the

front and the rear of your TV at the same time; otherwise the picture will

not be displayed properly on the screen.

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 SELE T twice.

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

channel, then preset your TV manually (see page 11).

Note (Except KV-XA21M61 (EM)

• During automatic channel presetting, your TV screen will indicate

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

AUTO

PRO R

VHF LOW B/

L(MONO) R

PRO R

SELECT AUTO

PRO R

N te (Except KV-XA21M61 (EM/GE))

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– 10 –

KV-XA21M80/XA21M83/XA21M50/

KV-XA21M61/ XA21M60

RM-952

Using Your New TV

Connecting optional components

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

camcorder, video game or stereo system.

To watch the video input of the connected equipment, press t (see page 14).

Connecting a camcorder/video game equipment

using the t (video input) jacks

Notes

• You can also connect video equipment to the t 1 (video input) jack at

the rear of your TV.

(Not used for these models)

• You can also connect video equipment to the t 1 or 2 (video input) jacks

at the rear of your TV.

• Do not connect video equipment to the t 2 (video input) jacks at the

front and the rear of your TV at the same time; otherwise the picture will

not be displayed properly on the screen.

Connecting audio/video equipment using the T

(monitor output) jacks

(Not used for these models)

Front of TV

Camcorder

Video game

equipment

To video and

audio outputs

: Signal flow

To t 2

(video input)

Audio Video cable (not supplied)

(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)R

L(MONO) R

PRO R

SELECT AUTO

PRO R

continued

Using Your New TV

Note

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

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

KV-XA21M83 XA21M80

(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)

Connecting optional components (continued)

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