Sony Trinitron KV-TG21M90, Руководство по обслуживанию

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KV-TG21M61/TG21M90
RM-952
– 3 –
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ................................... 4
1. GENERAL ................................................................. 7
2. DISASSEMBLY
2-1. Rear Cover Removal ............................................... 11
2-2. Speaker Removal .................................................... 11
2-3. Chassis Assy Removal ............................................ 11
2-4. F Board Removal .................................................... 11
2-5. Service Position ...................................................... 11
2-6. Terminal Bracket Removal ..................................... 11
2-7. A3 and V2 Boards Removal ................................... 12
2-8. Replacement of Parts .............................................. 12
2-8-1. Light Guide .................................................. 12
2-8-2. Power Button ................................................ 12
2-9. Picture Tube Removal ............................................. 12
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ......................................................... 13
3-2. Convergence ............................................................ 14
3-3. Focus Adjustment .................................................... 16
3-4. G2 (SCREEN) and white balance adjustments ...... 16
4. CIRCUIT ADJUSTMENTS
4-1. Adjustment With Commander ................................ 17
4-2. Adjustment Method ................................................ 17
4-3. Picture Quality Adjustment .................................... 22
4-4. Deflection Adjustment ............................................ 22
4-5. A Board Ajustment After IC003 (MEMORY)
Replacement ............................................................ 22
4-6. Picture Distortion Adjustment ................................ 23
Section Title Page Section Title Page
5. DIAGRAMS
5-1. Block Diagram ........................................................ 25
5-2. Circuit Boards Location .......................................... 27
5-3. Schematic Diagram ................................................. 28
(1) Schematic Diagram of A Board ........................ 29
(2) Schematic Diagram of A3 Board ...................... 33
(3) Schematic Diagram of V2 Board ...................... 35
(4) Schematic Diagram of CV Board ..................... 37
(5) Schematic Diagram of F Board ........................ 38
5-4. Voltage Measurement ............................................. 39
5-5. Waveforms .............................................................. 43
5-6. Printed Wiring Boards and Parts Location ............. 44
5-7. Semiconductors ....................................................... 48
6. EXPLODED VIEWS
6-1. Picture tube and Chassis ......................................... 50
7. ELECTRICAL PARTS LIST .................................... 51