KV-DA292M86 - Sony TV Service Manual (repair manual)

MODEL

PART NO. :

9-872-949-01

1

-01

2007/1

_ _

1st Issue

®

– 2 –

SELF DIAGNOSTIC FUNCTION .............................. 3

1-1. Rear Cover Removal ................................................. 5
1-2. Speaker Removal ...................................................... 5
1-3. Chassis Assy Removal .............................................. 5
1-4. Service Position ........................................................ 5
1-5. Terminal Bracket Removal ....................................... 5
1-6. J Board Removal ....................................................... 5
1-7. BP and BC Boards Removal ..................................... 6
1-8. BH1 Board Removal ................................................. 6
1-9. F1 Board Removal .................................................... 6
1-10. DL Board Removal ................................................... 6
1-11. H1 and H2 Boards Removal ..................................... 6
1-12. A and D Boards Removal ......................................... 6
1-13. Picture Tube Removal ............................................... 7

2-1. Dressing of Conn Assy, 6P, Conn Assy, 4P VH and

Wire Harness, A ........................................................ 8

2-2. Dressing of Conn Assy, 4P VH ................................. 8
2-3. Dressing of Conn Assy, 5P ....................................... 8
2-4. Dressing of Conn Assy, 10P, Conn Assy,

9P and Conn Assy, 10P+10P .................................... 9

2-5. Dressing of Conn Assy, 8P and Conn Assy .............. 9
2-6. Dressing of H-Static Wire ......................................... 9
2-7. Lead Assy, Speaker wire dressing ............................ 9
2-8. Speaker and Tweeter installation ............................ 10
2-9. Installation and dressing of Earth Coating Assy .... 10
2-10. Wire Harness, A and DGC Conn dressing ............. 10
2-11. Lead Assy Earth Wire ............................................. 11
2-12. Dressing of Conn Assy, 3P, Conn Assy,

4P and Wire Harness ............................................... 11

2-13. Conn Assy Wire Dressing ....................................... 11
2-14. Conn Assy Wire Dressing ....................................... 12
2-15. Conn Assy wire dressing ........................................ 12
2-16. Conn Assy wire dressing ........................................ 12
2-17. Conn Assy wire ....................................................... 13
2-18. Conn Assy wire ....................................................... 13
2-19. HV cap assy installation ......................................... 13
2-20. HV cap assy wire .................................................... 14
2-21. Dressing of Lead Assy, G2+Focus at Terminal

Bracket .................................................................... 14

2-22. Dressing of Lead Assy, Focus and G2 .................... 14
2-23. Dressing of AC Power Cord ................................... 14

3-1. Jigs Required for Servicing .................................... 15

4. CIRCUIT BOARDS LOCATION ............................. 15

5-1. "RESET" Function .................................................. 16

6-1. Beam Landing ......................................................... 17
6-2. Convergence Adjustment ........................................ 18
6-3. Focus Adjustment .................................................... 20
6-4. Neck Assy Twist Adjustment .................................. 20
6-5. G2 (SCREEN) and White Balance Adjustment ..... 20

7-1. Adjustment With Commander ................................ 21
7-2. Adjustment Method ................................................ 22
7-3. Picture Quality Adjustments ................................... 67
7-4. Sub Hue/Col Adjustment ........................................ 67
7-5. Deflection Adjustments .......................................... 67
7-6. A Board Adjustment After IC003 (MEMORY)

Replacement ............................................................ 68

7-7. Picture Distortion Adjustment ................................ 69

8-1. Block Diagram ........................................................ 70
8-2. Schematic Diagram Information ............................ 71

8-2-1. A Board – (Block 001) ................................. 72
8-2-2. A Board – (Block 002) ................................. 74
8-2-3. A Board – (Block 003) ................................. 76
8-2-4. A Board – (Block 004) ................................. 78
8-2-5. BC Board Schematic Diagram .................... 79
8-2-6. BH1 Board – (Block 001) ............................ 81
8-2-7. BH1 Board – (Block 002) ............................ 83
8-2-8. BP Board Schematic Diagram ..................... 85
8-2-9. C Board Schematic Diagram ....................... 87
8-2-10. D Board – (Block 001) .............................. 89
8-2-11. D Board – (Block 002) .............................. 91
8-2-12. DL Board Schematic Diagram .................. 92
8-2-13. F1 and H2 Board Schematic Diagrams ..... 94
8-2-14. H1 Board Schematic Diagram ................... 95
8-2-15. VM Board Schematic Diagram .................. 97
8-2-16. J Board Schematic Diagram ...................... 99

8-3. Voltage Measurement and Waveform ................... 100
8-4. Printed Wiring Boards .......................................... 112
8-5. Semiconductors ..................................................... 123

9-1. Picture Tube .......................................................... 125
9-2. Chassis ................................................................... 126

10. ELECTRICAL PARTS LIST .................................. 127

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.

– 3 –

Detected

Symptoms

• Power does not turn on.
• No power is supplied to the

TV.

• AC power supply is faulty.

• Power does not turn on.
• Load on power line is

shorted.

• H pulse output is too high.

• Power does not turn on.

• Vertical deflection pulse is

stopped.

• Vertical size is too small.
• Vertical deflection stopped.

• No raster is generated.
• CRT cathode current

detection reference pulse
output is small.

• TV Blank
• No Raster

• Power is shut down shortly,

after this return back to
normal.

• Detect Micro latch up.

• TV Blank
• No Raster

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. 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.

When an error occurs, the STANDBY/TIMER lamp will flash a 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)

• Horizontal

deflection failure

• +B overvoltage

(OVP)

• Vertical deflection

failure

• White balance

failure (no
PICTURE)

• 5V/9V failure

• Micro reset

• BT Power

Failure

No. of times

STANDBY/TIMER

lamp flashes

Does not light

2 times

3 times

4 times

5 times

8 times

—

9 times

Self-diagnostic

display/Diagnostic

result

—

2 OCP :000 or

2 OCP :001~255

3 OVP :000 or

3 OVP :001~255

4 VSTOP :000 or

4 VSTOP :001~255

5 AKB :000 or

5 AKB :001~255

8 SUP :0001 or

8 SUP :001~225

101 WDT :N/A

9 SUPBT:000 or

9 SUPBT :001~255

Probable

Cause

Location

• Power cord is not plugged in.
• Fuse is burned out F1601

(F1 Board)

• H.OUT Q6802 is shorted.
• PS6606 open, PS6605 open.

(D board)

• PH6602 faulty.

D6644 faulty, R6688 open.

• 10.5V is not supplied.

(D board)

• V.OUT IC6800 faulty

D6827 faulty
D6817 faulty
R6850 open
R6872 open (D board)

• G2 is improperly adjusted.
• CRT problem.
• Video OUT IC9001, 9002,

9003 are faulty. (C board)

• IC4301 CXA2170Q

(A board) are faulty.

• 5V regulator (IC2601) faulty.
• 9V regulator (IC2600) faulty.

• CRT Discharge (C Board)
• Static discharge
• External noise

BT MCV Failure

Standby indicator