Read Sony KF-42WE620 / KF-50WE620 Service Manual online
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KF-42WE620/50WE620
KF-42WE620/50WE620
TABLE OF CONTENTS
Specifi cations ................................................................................. 4
Warnings and Cautions .................................................................. 5
Safety Check-Out ........................................................................... 6
Self-Diagnostic Function................................................................. 7
SECTION 1: DISASSEMBLY............................................................... 10
1-1. Rear Cover Removal............................................................ 10
1-2. Center Pillar Removal .......................................................... 10
1-3. Service Position ...................................................................11
1-4. Chassis Assembly and D.C. Fan Removal ...........................11
1-5. Power Supply Block Removal (Lamp Drive Unit)................. 12
1-6. UD Board and RF Antenna Switch Removal........................ 12
1-7. U Board Removal................................................................. 13
1-8. F and G1 Board Removal .................................................... 13
1-9. DIC Block, AU Board and C2 Board Removal ..................... 14
1-10. A Board Removal ................................................................. 14
1-11. T Board Removal ................................................................. 15
1-12. Front Cover Assembly Removal........................................... 15
1-12-1. Replacing the Lamp................................................. 15
1-13. H3 Board Removal (KF-42WE620 Only) ............................. 16
1-14. H4 Board Removal (KF-42WE610 Only) ............................. 16
1-15. H3 and H4 Board Removal (KF-50WE620 Only)................. 17
1-16. H2 Board Removal............................................................... 17
1-17. H1 Board Removal............................................................... 18
1-18. Screen Mirror Block Assembly Removal .............................. 18
SECTION 2: CIRCUIT ADJUSTMENTS.............................................. 19
2-1. Setting the Service Adjustment Mode .................................. 19
2-2. Service Adjustment Mode Memory ...................................... 19
2-3. Memory Write Confi rmation Method .................................... 20
2-4. Remote Adjustment Buttons and Indicators ......................... 20
2-5. Service Data......................................................................... 21
2-6. ID Map Table ........................................................................ 93
SECTION 3: DIAGRAMS..................................................................... 94
3-1. Circuit Boards Location ........................................................ 94
3-2. Printed Wiring Boards and
Schematic Diagrams Information ......................................... 94
3-3. Block Diagrams .................................................................... 96
A Block Diagram (1 of 2) ................................................. 96
A Block Diagram (2 of 2) ................................................. 97
AU Block Diagram ........................................................... 98
G1 Block Diagram ........................................................... 99
H3, H1, H2, and T Block Diagrams ............................... 100
U Block Diagram ........................................................... 101
3-4. Schematics and Supporting Information ............................ 102
A Board Schematic Diagram (1 of 4).................................. 102
A Board Schematic Diagram (2 of 4).................................. 103
A Board Schematic Diagram (3 of 4).................................. 104
A Board Schematic Diagram (4 of 4).................................. 105
AU Board Schematic Diagram (1 of 2)............................... 108
AU Board Schematic Diagram (2 of 2)............................... 109
G1 Board Schematic Diagram ............................................ 111
F Board Schematic Diagram ...............................................112
U Board Schematic Diagram (1 of 3) ..................................115
U Board Schematic Diagram (2 of 3) ..................................116
U Board Schematic Diagram (3 of 3) ..................................117
UD Board Schematic Diagram (1 of 2)................................119
UD Board Schematic Diagram (2 of 2)............................... 120
H1 Board Schematic Diagram............................................ 122
H2 Board Schematic Diagram............................................ 124
H3 Board Schematic Diagram............................................ 126
H4 Board Schematic Diagram............................................ 128
T Board Schematic Diagram .............................................. 129
3-5. Semiconductors ................................................................. 130
SECTION 4: EXPLODED VIEWS ...................................................... 131
4-1. Cover, Screen Mirror Block ................................................ 131
4-2. Bottom Block ...................................................................... 132
4-3. Chassis - 1 ......................................................................... 133
4-4. Chassis - 2 ......................................................................... 134
4-5. Optical Unit Block............................................................... 135
SECTION 5: ELECTRICAL PARTS LIST.......................................... 136
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