Sony WEGA KLV-20SR3, Руководство по обслуживанию, Страница: 2 / 54

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WA1
RM-Y1108
TABLE OF CONTENTS
Section Title Page Section Title Page
Caution ................................................................ 3
Specifications ...................................................... 4
Connectors .......................................................... 5
Self Diagnosis ..................................................... 6
1. GENERAL ................................................................... 7
2. DISASSEMBLY
2-1. Rear Cabinet Assembly Removal ....................... 18
2-2. Stand Removal .................................................... 18
2-3. Rear Cover Removal ........................................... 19
2-4. Speaker Removal ................................................ 19
2-5. A Board Removal ............................................... 20
2-6. G Board Removal ............................................... 20
2-7. H1 Board Removal ............................................. 21
2-8. H2 Board Removal ............................................. 21
2-9. H3 Board Removal ............................................. 22
2-10. H5 Board Removal ............................................. 22
2-11. LCD Bracket Removal ........................................ 23
2-12. LCD Removal ..................................................... 23
3. SET-UP ADJUSTMENTS
3-1. Signal Adjustment ............................................. 24
3-1-1. Pal auto adjustment (CVBS) ........................... 24
3-1-2. Pal auto adjustment (RGB) .............................. 24
3-2. White Balance Adjustment ................................. 24
3-2-1. White Balance adjustment (H/L) ..................... 24
3-2-2. White Balance adjustment (C/O) ..................... 24
4. DIAGRAMS
4-1. Block Diagrams (1) ............................................ 25
Block Diagrams (2) ............................................ 26
4-2. Circuit Board Location ........................................ 26
4-3. Schematic Diagrams and Printed Wiring
Boards ................................................................. 26
A Board Schematic Diagram .............................. 27
A Printed Wiring Board .................................... 30
G Board Schematic Diagram .............................. 32
G Printed Wiring Board .................................... 33
H1 Board Schematic Diagram ............................ 34
H1 Printed Wiring Board .................................. 35
H2 Board Schematic Diagram ............................ 34
H2 Printed Wiring Board .................................. 35
H3 Schematic Diagram ....................................... 36
H3 Printed Wiring Board .................................. 37
H5 Schematic Diagram ....................................... 36
H5 Printed Wiring Board .................................. 37
4-4. Semiconductors .................................................. 38
5. EXPLODED VIEWS
5-1. Front Cabinet Assy and Speakers ...................... 40
5-2. Rear Cabinet Assy and Chassis .......................... 41
6. ELECTRICAL PARTS LIST .................................. 42
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY SHADING AND MARKED ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
WARNING !!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING
ANY SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD
DUE TO LIVE CHASSIS, THE CHASSIS OF THIS RECEIVER IS
DIRECTLY CONNECTED TO THE POWER LINE.