Sony TRINITRON KV-PG21M70, Руководство по обслуживанию

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KV-PG21P40/PG21M70/PG21P70
RM-952
– 3 –
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ...................................
4
1. GENERAL .................................................................
7
2. DISASSEMBLY
2-1. Rear Cover Removal ............................................... 14
2-2. Speaker Removal .................................................... 14
2-3. Chassis Assy Removal ............................................ 14
2-4. Service Position ...................................................... 14
2-5. Terminal Bracket Removal ..................................... 14
2-6. Replacement Of Parts ............................................. 15
2-6-1. Replacement Of Light Guide ....................... 15
2-6-2. Replacement Of Power Button .................... 15
2-7. Picture Tube Removal ............................................. 15
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ......................................................... 16
3-2. Convergence ............................................................ 17
3-3. Focus Adjustment .................................................... 19
3-4. G2 (SCREEN) and white balance adjustments ...... 19
4. CIRCUIT ADJUSTMENTS
4-1. Adjustment With Commander ................................ 20
4-2. Adjustment Method ................................................ 20
4-3. Picture Quality Adjustment .................................... 25
4-4. Deflection Adjustment ............................................ 25
4-5. A Board Ajustment After IC003 (MEMORY)
Replacement ............................................................ 25
4-6. Picture Distortion Adjustment ................................ 26
Section Title Page
Section Title Page
5. DIAGRAMS
5-1. Block Diagram ........................................................ 27
5-2. Circuit Boards Location .......................................... 29
5-3. Schematic Diagram ................................................. 30
(1) Schematic Diagram of A Board ........................ 31
(2) Schematic Diagram of CV Board ..................... 35
5-4. Voltage Measurement ............................................. 37
5-5. Waveforms .............................................................. 40
5-6. Printed Wiring Boards and Parts Location ............. 41
5-7. Semiconductors ....................................................... 44
6. EXPLODED VIEWS
6-1. Picture tube and Chassis ......................................... 46
7. ELECTRICAL PARTS LIST ....................................
47