Read Sony KV-XA29M20A Service Manual online
MODEL
COMMANDER DEST.
CHASSIS NO.
CHASSIS
TRINITRON
®
COLOR TV
SERVICE MANUAL
BG3R
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-XA29M20A
RM-952
South Africa
TV
1
2
3
4
6
7
8
9
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-/--
– 2 –
KV-XA29M20A
RM-952
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION .............................. 3
1. DISASSEMBLY
1-1. Rear Cover Removal ................................................. 6
1-2. Speaker Removal ...................................................... 6
1-3. Chassis Assy Removal .............................................. 6
1-4. Service Position ........................................................ 6
1-5. Replacement of Parts ................................................ 6
1-2. Speaker Removal ...................................................... 6
1-3. Chassis Assy Removal .............................................. 6
1-4. Service Position ........................................................ 6
1-5. Replacement of Parts ................................................ 6
1-5-1. Replacement of Multi Button ........................ 6
1-5-2. Replacement of Light Guide .......................... 6
1-5-2. Replacement of Light Guide .......................... 6
1-6. J Board and Terminal Bracket Removal ................... 7
1-7. D3 Board Removal .................................................... 7
1-8. H Board Removal ...................................................... 7
1-9. A and B9 Boards Removal ....................................... 7
1-10. Picture Tube Removal ............................................... 8
1-7. D3 Board Removal .................................................... 7
1-8. H Board Removal ...................................................... 7
1-9. A and B9 Boards Removal ....................................... 7
1-10. Picture Tube Removal ............................................... 8
2. SET-UP ADJUSTMENTS
2-1. Beam Landing ........................................................... 9
2-2. Convergence ............................................................ 10
2-3. Focus Adjustment .................................................... 12
2-4. G2 (Screen) and White Balance Adjustments ........ 12
2-2. Convergence ............................................................ 10
2-3. Focus Adjustment .................................................... 12
2-4. G2 (Screen) and White Balance Adjustments ........ 12
3. CIRCUIT ADJUSTMENTS
3-1. Adjustment With Commander ................................ 13
3-2. Adjustment Method ................................................ 13
3-3. Picture Quality Adjustments ................................... 18
3-4. Deflection Adjustment ............................................ 18
3-5. H-Trapezoid Adjustment ......................................... 18
3-6. A Board Ajustment After IC003 (Memory)
3-2. Adjustment Method ................................................ 13
3-3. Picture Quality Adjustments ................................... 18
3-4. Deflection Adjustment ............................................ 18
3-5. H-Trapezoid Adjustment ......................................... 18
3-6. A Board Ajustment After IC003 (Memory)
Replacement ............................................................ 18
3-7. Picture Distortion Adjustment ................................ 19
Section
Title
Page
Section
Title
Page
4. DIAGRAMS
4-1. Block Diagram ........................................................ 20
4-2. Circuit Boards Location .......................................... 22
4-3. Schematic Diagrams ............................................... 23
4-2. Circuit Boards Location .......................................... 22
4-3. Schematic Diagrams ............................................... 23
(1) A Board Schematic Diagram ............................ 24
(2) B9 Board Schematic Diagram .......................... 28
(3) C6 Board Schematic Diagram .......................... 30
(4) H Board Schematic Diagram ............................ 32
(5) J Board Schematic Diagram ............................. 34
(6) D3 Board Schematic Diagram .......................... 35
(7) VM1 Board Schematic Diagram ....................... 36
(2) B9 Board Schematic Diagram .......................... 28
(3) C6 Board Schematic Diagram .......................... 30
(4) H Board Schematic Diagram ............................ 32
(5) J Board Schematic Diagram ............................. 34
(6) D3 Board Schematic Diagram .......................... 35
(7) VM1 Board Schematic Diagram ....................... 36
4-4. Voltage Measurements ............................................ 37
4-5. Waveforms .............................................................. 40
4-6. Printed Wiring Boards and Parts Location ............. 41
4-7. Semiconductors ....................................................... 46
4-5. Waveforms .............................................................. 40
4-6. Printed Wiring Boards and Parts Location ............. 41
4-7. Semiconductors ....................................................... 46
5. EXPLODED VIEWS
5-1. Picture Tube ............................................................ 48
5-2. Chassis ..................................................................... 50
5-2. Chassis ..................................................................... 50
6. ELECTRICAL PARTS LIST .................................... 51
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.
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.
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD,
OR CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
– 3 –
KV-XA29M20A
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.
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.
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”.
“0”.
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.
SELF DIAGNOSTIC FUNCTION
Diagnostic
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP) or
overvoltage
(OVP)
overvoltage
(OVP)
• Vertical deflection
stopped
• Horizontal
deflection
overdrive
overdrive
• White balance
failure (no
PICTURE)
PICTURE)
• Micro reset
Detected
Symptoms
• Power does not come on.
• No power is supplied to the
• No power is supplied to the
TV.
• AC power supply is faulty.
• Power does not come on.
• Load on power line is
• 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
• CRT cathode current
detection reference pulse
output is small.
output is small.
• Power is shut down shortly,
after this return back to
normal.
normal.
• Detect Micro latch up.
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
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 F7601
(B9)
• H.OUT Q511 is shorted.
(A board)
• IC1800 is shorted.
(C6 board)
• -13V is not supplied.
(A board)
• IC 503 faulty (A board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• Video OUT is faulty.
• Video OUT is faulty.
(C6 board)
• IC301 is faulty. (A board)
• No connection A board to
• No connection A board to
C6 board.
• Discharge CRT (C6 Board)
• Static discharge
• External noise
• Static discharge
• External noise
– 4 –
KV-XA29M20A
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.
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 con-
firmed, it is possible to bring up past occurances of failure for confirmation on the screen:
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:
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
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
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
Lamp ON 0.3 sec.
Lamp OFF 3 sec.
Lamp OFF 0.3 sec.
2 times
5 times