Read Sony KV-TG21M70 Service Manual online
KV-TG21M70/TG21M90/N
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. 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. Replacement of Parts .............................................. 12
2-6-1. Replacement of Light Guide ........................ 12
2-6-2. Replacement of Power Button ..................... 12
2-6-2. Replacement of Power Button ..................... 12
2-7. 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 .................................... 24
4-4. Deflection Adjustment ............................................ 24
4-5. A Board Adjustment After IC003 (MEMORY)
4-2. Adjustment Method ................................................ 18
4-3. Picture Quality Adjustment .................................... 24
4-4. Deflection Adjustment ............................................ 24
4-5. A Board Adjustment After IC003 (MEMORY)
Replacement ............................................................ 24
4-6. Picture Distortion Adjustment ................................ 25
Section
Title
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Section
Title
Page
5. DIAGRAMS
5-1. Block Diagram ........................................................ 27
5-2. Circuit Boards Location .......................................... 29
5-3. Schematic Diagram ................................................. 30
5-2. Circuit Boards Location .......................................... 29
5-3. Schematic Diagram ................................................. 30
(1) A Board Schematic Diagram ............................ 31
(2) A3 Board Schematic Diagram .......................... 33
(3) CV Board Schematic Diagram ......................... 35
(4) F Board Schematic Diagram ............................. 36
(2) A3 Board Schematic Diagram .......................... 33
(3) CV Board Schematic Diagram ......................... 35
(4) F Board Schematic Diagram ............................. 36
5-4. Voltage Measurement ............................................. 39
5-5. Waveforms .............................................................. 42
5-6. Printed Wiring Boards and Parts Location ............. 43
5-7. Semiconductors ....................................................... 47
5-5. Waveforms .............................................................. 42
5-6. Printed Wiring Boards and Parts Location ............. 43
5-7. Semiconductors ....................................................... 47
6. EXPLODED VIEWS
6-1. Picture Tube and Chassis ........................................ 49
7. ELECTRICAL PARTS LIST .................................... 50
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