Read Sony KV-TG21M81 Service Manual online
KV-TG21M81
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. Service Position ...................................................... 11
2-5. Terminal Bracket Removal ..................................... 11
2-6. V2 Boards Removal ................................................ 12
2-7. Replacement of Parts .............................................. 12
2-2. Speaker Removal .................................................... 11
2-3. Chassis Assy Removal ............................................ 11
2-4. Service Position ...................................................... 11
2-5. Terminal Bracket Removal ..................................... 11
2-6. V2 Boards Removal ................................................ 12
2-7. Replacement of Parts .............................................. 12
2-7-1. Replacement of Light Guide ........................ 12
2-7-2. Replacement of Power Button ..................... 12
2-7-2. Replacement of Power Button ..................... 12
2-8. Picture Tube Removal ............................................. 12
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
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 .................................... 23
4-4. Deflection Adjustment ............................................ 23
4-5. A Board Ajustment After IC003 (MEMORY)
4-2. Adjustment Method ................................................ 18
4-3. Picture Quality Adjustment .................................... 23
4-4. Deflection Adjustment ............................................ 23
4-5. A Board Ajustment After IC003 (MEMORY)
Replacement ............................................................ 23
4-6. Picture Distortion Adjustment ................................ 24
Section
Title
Page
Section
Title
Page
5. DIAGRAMS
5-1. Block Diagram ........................................................ 25
5-2. Circuit Boards Location .......................................... 27
5-3. Schematic Diagram ................................................. 28
5-2. Circuit Boards Location .......................................... 27
5-3. Schematic Diagram ................................................. 28
(1) A Board Schematic Diagram ............................ 29
(2) V2 Board Schematic Diagram .......................... 31
(3) CV Board Schematic Diagram ......................... 33
(2) V2 Board Schematic Diagram .......................... 31
(3) CV Board Schematic Diagram ......................... 33
5-4. Voltage Measurement ............................................. 34
5-5. Waveforms .............................................................. 37
5-6. Printed Wiring Boards and Parts Location ............. 38
5-7. Semiconductors ....................................................... 41
5-5. Waveforms .............................................................. 37
5-6. Printed Wiring Boards and Parts Location ............. 38
5-7. Semiconductors ....................................................... 41
6. EXPLODED VIEWS
6-1. Picture tube and Chassis ......................................... 43
7. ELECTRICAL PARTS LIST .................................... 44
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