Read Sony KV-20FS120 Service Manual online
3
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
TABLE OF CONTENTS
SECTION TITLE
PAGE
Specifi cations ............................................................................................................................................................................. 4
Warnings and Cautions .............................................................................................................................................................. 6
Safety Check-Out ....................................................................................................................................................................... 7
Self-Diagnostic Function............................................................................................................................................................. 8
Warnings and Cautions .............................................................................................................................................................. 6
Safety Check-Out ....................................................................................................................................................................... 7
Self-Diagnostic Function............................................................................................................................................................. 8
SECTION 1: DISASSEMBLY........................................................................................................................................................... 10
1-1. Rear Cover Removal (All Except KV-21FA310) ............................................................................................................... 10
1-2. Rear Cover Removal (KV-21FA310 Only)........................................................................................................................ 10
1-3. Chassis Assembly Removal..............................................................................................................................................11
1-4. Service Position ................................................................................................................................................................11
1-5. Picture Tube Removal...................................................................................................................................................... 12
1-2. Rear Cover Removal (KV-21FA310 Only)........................................................................................................................ 10
1-3. Chassis Assembly Removal..............................................................................................................................................11
1-4. Service Position ................................................................................................................................................................11
1-5. Picture Tube Removal...................................................................................................................................................... 12
Anode Cap Removal Procedure....................................................................................................................................... 12
SECTION 2: SET-UP ADJUSTMENTS............................................................................................................................................ 13
2-1. Beam Landing .................................................................................................................................................................. 13
2-2. Convergence.................................................................................................................................................................... 14
2-3. Focus ............................................................................................................................................................................... 15
2-4. Screen (G2)...................................................................................................................................................................... 16
2-5. Method of Setting the Service Adjustment Mode ............................................................................................................. 16
2-6. White Balance Adjustments ............................................................................................................................................. 16
2-2. Convergence.................................................................................................................................................................... 14
2-3. Focus ............................................................................................................................................................................... 15
2-4. Screen (G2)...................................................................................................................................................................... 16
2-5. Method of Setting the Service Adjustment Mode ............................................................................................................. 16
2-6. White Balance Adjustments ............................................................................................................................................. 16
SECTION 3: SAFETY RELATED ADJUSTMENTS......................................................................................................................... 17
3-1. X R565 Confi rmation Method (HV Hold-Down Confi rmation) and Readjustments ........................................................ 17
3-2. B+ Voltage Confi rmation and Adjustment ........................................................................................................................ 17
3-2. B+ Voltage Confi rmation and Adjustment ........................................................................................................................ 17
SECTION 4: CIRCUIT ADJUSTMENTS.......................................................................................................................................... 19
4-1. Setting the Service Adjustment Mode .............................................................................................................................. 19
4-2. Memory Write Confi rmation Method ................................................................................................................................ 19
4-3. Remote Adjustment Buttons and Indicators ..................................................................................................................... 19
4-4. Service Data Lists ............................................................................................................................................................ 20
4-5. ID Map Table .................................................................................................................................................................... 34
4-6. A Board Adjustments........................................................................................................................................................ 34
4-2. Memory Write Confi rmation Method ................................................................................................................................ 19
4-3. Remote Adjustment Buttons and Indicators ..................................................................................................................... 19
4-4. Service Data Lists ............................................................................................................................................................ 20
4-5. ID Map Table .................................................................................................................................................................... 34
4-6. A Board Adjustments........................................................................................................................................................ 34
SECTION 5: DIAGRAMS................................................................................................................................................................. 37
5-1. Circuit Boards Location .................................................................................................................................................... 37
5-2. Printed Wiring Board and Schematic Diagram Information.............................................................................................. 37
5-3. Block Diagram and Schematics ....................................................................................................................................... 38
5-2. Printed Wiring Board and Schematic Diagram Information.............................................................................................. 37
5-3. Block Diagram and Schematics ....................................................................................................................................... 38
A Board Schematic Diagram ............................................................................................................................................ 39
HB Board Schematic Diagram (All Except KV-21FA310)................................................................................................ 41
HR Board Schematic Diagram (KV-21FA310 Only) ........................................................................................................ 44
CV Board Schematic Diagram ......................................................................................................................................... 45
K Board Schematic Diagram (KV-21FA310 Only)............................................................................................................ 49
HB Board Schematic Diagram (All Except KV-21FA310)................................................................................................ 41
HR Board Schematic Diagram (KV-21FA310 Only) ........................................................................................................ 44
CV Board Schematic Diagram ......................................................................................................................................... 45
K Board Schematic Diagram (KV-21FA310 Only)............................................................................................................ 49
5-4. Semiconductors ............................................................................................................................................................... 51
SECTION 6: EXPLODED VIEWS .................................................................................................................................................... 52
6-1. Picture Tube (KV-20FS120/21FS120 Only) ..................................................................................................................... 52
6-2. Chassis (KV-20FS120/21FS120 Only)............................................................................................................................. 53
6-3. Picture Tube (KV-21FM120 Only) .................................................................................................................................... 54
6-4. Chassis (KV-21FM120 Only)............................................................................................................................................ 55
6-5. Picture Tube (KV-21FA310 Only) ..................................................................................................................................... 56
6-6. Chassis (KV-21FA310 Only) ............................................................................................................................................ 57
6-7. Picture Tube (KV-24FS120/25FS120 Only) ..................................................................................................................... 58
6-8. Chassis (KV-24FS120/25FS120 Only)............................................................................................................................. 59
6-2. Chassis (KV-20FS120/21FS120 Only)............................................................................................................................. 53
6-3. Picture Tube (KV-21FM120 Only) .................................................................................................................................... 54
6-4. Chassis (KV-21FM120 Only)............................................................................................................................................ 55
6-5. Picture Tube (KV-21FA310 Only) ..................................................................................................................................... 56
6-6. Chassis (KV-21FA310 Only) ............................................................................................................................................ 57
6-7. Picture Tube (KV-24FS120/25FS120 Only) ..................................................................................................................... 58
6-8. Chassis (KV-24FS120/25FS120 Only)............................................................................................................................. 59
SECTION 7: ELECTRICAL PARTS LIST....................................................................................................................................... 60
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