Sony KV-HA21N70, Руководство по обслуживанию

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KV-HA21M80/HA21N70/HA21N80
RM-969 RM-968
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ...................................
4
1. GENERAL .................................................................
7
2. DISASSEMBLY
2-1. Rear Cover Removal ............................................... 12
2-2. Speaker Removal .................................................... 12
2-3. Chassis Assy Removal ............................................ 12
2-4. Service Position ...................................................... 12
2-5. Terminal Bracket Removal ..................................... 12
2-6. Replacement Of Parts ............................................. 12
2-6-1. Replacement Of Light Guide ....................... 12
2-6-2. Replacement Of Power Button .................... 12
2-7 Picture Tube Removal ............................................. 13
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ......................................................... 14
3-2. Convergence ............................................................ 15
3-3. Focus Adjustment .................................................... 17
3-4. G2 (SCREEN) and White Balance Adjustments ... 17
4. CIRCUIT ADJUSTMENTS
4-1. Adjustment With Commander ................................ 18
4-2. Adjustment Method ................................................ 18
4-3. Picture Quality Adjustment .................................... 28
4-4. Deflection Adjustment ............................................ 28
4-5. A Board Adjustment After IC003 (MEMORY)
Replacement ............................................................ 28
4-6. Picture Distortion Adjustment ................................ 29
Section Title Page
Section Title Page
5. DIAGRAMS
5-1. Block Diagram ........................................................ 30
5-2. Circuit Boards Location .......................................... 32
5-3. Schematic Diagram ................................................. 33
(1) A Board Schematic Diagram ............................ 34
(2) CV Board Schematic Diagram ......................... 36
5-4. Voltage Measurement ............................................. 40
5-5. Waveforms .............................................................. 43
5-6. Printed Wiring Boards and Parts Location ............. 44
5-7. Semiconductors ....................................................... 47
6. EXPLODED VIEWS
6-1. Picture Tube and Chassis ........................................ 49
7. ELECTRICAL PARTS LIST ....................................
50