Read Sony KV-XA21M81 Service Manual online
KV-XA21M81
RM-952
– 3 –
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION .............................. 4
1. GENERAL ................................................................. 7
2. DISASSEMBLY
2-1. Rear Cover Removal ............................................... 21
2-2. Speaker Removal .................................................... 21
2-3. Chassis Assy Removal ............................................ 21
2-4. F Bracket Removal .................................................. 21
2-5. Service Position ...................................................... 21
2-6. Replacement of Parts .............................................. 21
2-2. Speaker Removal .................................................... 21
2-3. Chassis Assy Removal ............................................ 21
2-4. F Bracket Removal .................................................. 21
2-5. Service Position ...................................................... 21
2-6. Replacement of Parts .............................................. 21
2-6-1. Replacement of Light Guide ........................ 21
2-6-2. Replacement of Power Button ..................... 21
2-6-2. Replacement of Power Button ..................... 21
2-7. Terminal Bracket Removal ..................................... 22
2-8. V1 Board Removal .................................................. 22
2-9. Picture Tube Removal ............................................. 23
2-8. V1 Board Removal .................................................. 22
2-9. Picture Tube Removal ............................................. 23
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ......................................................... 24
3-2. Convergence Adjustment ........................................ 25
3-3. Focus Adjustment .................................................... 27
3-4. G2 (SCREEN) and White Balance Adjustments ... 27
3-2. Convergence Adjustment ........................................ 25
3-3. Focus Adjustment .................................................... 27
3-4. G2 (SCREEN) and White Balance Adjustments ... 27
4. CIRCUIT ADJUSTMENTS
4-1. Adjustment With Commander ................................ 28
4-2. Adjustment Method ................................................ 28
4-3. Picture Quality Adjustment .................................... 33
4-4. Deflection Adjustment ............................................ 33
4-5. A Board Adjustment After IC003 (Memory)
4-2. Adjustment Method ................................................ 28
4-3. Picture Quality Adjustment .................................... 33
4-4. Deflection Adjustment ............................................ 33
4-5. A Board Adjustment After IC003 (Memory)
Replacement ............................................................ 33
4-6. Picture Distortion Adjustment ................................ 34
Section
Title
Page
Section
Title
Page
5. DIAGRAMS
5-1. Block Diagram ........................................................ 35
5-2. Circuit Boards Location .......................................... 37
5-3. Schematic Diagrams ............................................... 38
5-2. Circuit Boards Location .......................................... 37
5-3. Schematic Diagrams ............................................... 38
(1) F and C1 Boards Schematic Diagrams ............. 39
(2) A Board Schematic Diagram ............................ 41
(3) V1 Board Schematic Diagram .......................... 45
(2) A Board Schematic Diagram ............................ 41
(3) V1 Board Schematic Diagram .......................... 45
5-4. Voltage Measurement ............................................. 47
5-5. Waveforms .............................................................. 49
5-6. Printed Wiring Boards and Parts Location ............. 50
5-7. Semiconductors ....................................................... 54
5-5. Waveforms .............................................................. 49
5-6. Printed Wiring Boards and Parts Location ............. 50
5-7. Semiconductors ....................................................... 54
6. EXPLODED VIEWS
6-1. Picture Tube ............................................................ 56
6-2. Chassis ..................................................................... 57
6-2. Chassis ..................................................................... 57
7. ELECTRICAL PARTS LIST .................................... 58
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