Read Sony KLV-21SG2 (serv.man2) Service Manual online
KLV-21SG2 (UC)
4
TABLE OF CONTENTS
1. DISASSEMBLY ...................................... 1-1
1-1. REAR COVER AND STAND ASSY REMOVAL
1-1
1-2. REAR CABINET REMOVAL .............................. 1-1
1-3. MS AND U1 BOARDS REMOVAL ..................... 1-2
1-4. G2 BOARD REMOVAL ....................................... 1-2
1-5. A1 AND TU BOARDS REMOVAL ...................... 1-3
1-6. B AND MSB BOARDS REMOVAL ..................... 1-3
1-7. H1 AND MSX BOARDS REMOVAL ................... 1-4
1-8. H2 BOARD REMOVAL ....................................... 1-4
1-9. D2 BOARD REMOVAL ....................................... 1-5
1-10. H3 BOARD REMOVAL ..................................... 1-5
2. ADJUSTMENTS .................................... 2-1
2-1. Adjustment of signal level ................................... 2-1
2-1-1. Check AD calibration registration items ...... 2-1
2-1-2. Y signal AD calibration of TV/VIDEO input . 2-1
2-1-3. C signal AD calibration of TV/VIDEO input . 2-1
2-1-4. Y signal AD calibration of COMPONENT input . 2-2
2-1-5. C signal AD calibration of COMPONENT input . 2-2
2-2. White Balance Adjustment
2-2-1. White Balance of color temperature “high” .. 2-3
2-2-2. White Balance Adjustment of color
temperature “middle” .................................. 2-3
2-2-3. White Balance Adjustment of color
temperature “low” ......................................... 2-3
3. DIAGRAMS ............................................ 3-1
3-1. BLOCK DIAGRAMS ........................................... 3-1
3-2. FRAME DIAGRAM ............................................. 3-8
3-3. CIRCUIT BOARDS LOCATION ......................... 3-9
3-4. SCHEMATIC DIAGRAMS AND PRINTED
WIRING BOARDS ............................................. 3-9
(1) Schematic Diagrams of A1 Board ................. 3-10
(2) Schematic Diagrams of B Board ................... 3-15
(3) Schematic Diagram of G2 Board .................. 3-24
(4) Schematic Diagram of H1 and H2 Boards .... 3-26
(5) Schematic Diagram of H3 and U1 Boards .... 3-27
(6) Schematic Diagram of D2 Board .................. 3-28
(7) Schematic Diagrams of MS Board ................ 3-30
(8) Schematic Diagram of MSB and MSX Boards . 3-34
(9) Schematic Diagram of TU Board .................. 3-35
3-5. SEMICONDUCTORS ......................................... 3-36
4. EXPLODED VIEWS ............................... 4-1
4-1. CABINET ASSY AND STAND ASSY ................. 4-2
4-2. CHASSIS ............................................................ 4-3
4-3. PACKING MATERIALS ...................................... 4-4
5. ELECTRICAL PARTS LIST ................... 5-1
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