Table Of Contents - Sony TRINITRON KV-XA21M85 Service Manual

Section
SELF DIAGNOSTIC FUNCTION .............................. 4
1. GENERAL ................................................................. 7
2. DISASSEMBLY
2-1. Tweeter Removal .................................................... 21
2-2. Rear Cover Removal ............................................... 21
2-3. Speaker Removal .................................................... 21
2-4. Chassis Assy Removal ............................................ 21
2-5. F Bracket Removal .................................................. 21
2-6. J2 Board, V1 Board and Terminal
Bracket Removal ..................................................... 21
2-7. Service Position ...................................................... 22
2-8. Replacement of Parts .............................................. 22
2-8-1. Replacement of Light Guide ........................ 22
2-8-2. Replacement of Power Button ..................... 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
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)
Replacement ............................................................ 33
4-6. Picture Distortion Adjustment ................................ 34

TABLE OF CONTENTS

Title Page Section
5. DIAGRAMS
5-1. Block Diagram ........................................................ 35
5-2. Circuit Boards Location .......................................... 37
5-3. Schematic Diagrams ............................................... 38
(1) Schematic Diagrams of F, J2 and C1 Boards ... 39
(2) Schematic Diagram of A Board ........................ 41
(3) Schematic Diagram of V1 Board ...................... 45
5-4. Voltage Measurement ............................................. 47
5-5. Waveforms .............................................................. 50
5-6. Printed Wiring Boards and Parts Location ............. 51
5-7. Semiconductors ....................................................... 55
6. EXPLODED VIEWS
6-1. Picture Tube ............................................................ 57
6-2. Chassis ..................................................................... 58
7. ELECTRICAL PARTS LIST .................................... 59
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KV-XA21M85
Title Page
RM-952