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SA-WCT770

1. SERVICING NOTES ............................................. 4

2. DISASSEMBLY

2-1. Disassembly Flow ........................................................... 6

2-2. Rear Panel Block ............................................................ 6

2-3. Top Panel Block .............................................................. 7

2-4. SUB LED Board ............................................................. 8

2-5. Sub AMP Block .............................................................. 8

2-6. Top Plate Block, Fuse (F900) ......................................... 9

2-7. POWER Board ................................................................ 9

2-8. Power Cord (AC1) .......................................................... 10

2-9. RF Modulator (SWA12-4V RX) (RF1) .......................... 11

2-10. Rear Plate Block ............................................................. 11

2-11. SUB MAIN Board .......................................................... 12

2-12. Bottom Panel Block ........................................................ 13

2-13. Loudspeaker (16 cm) (SP1) ............................................ 14

3. TROUBLESHOOTING .......................................... 15

4. DIAGRAMS

4-1. Block Diagram ................................................................ 16

4-2. Printed Wiring Board - SUB MAIN Board (Side A) - .... 18

4-3. Printed Wiring Board - SUB MAIN Board (Side B) - .... 19

4-4. Schematic Diagram - SUB MAIN Board (1/2) - ............ 20

4-5. Schematic Diagram - SUB MAIN Board (2/2) - ............ 21

4-6. Printed Wiring Board - POWER Board - ........................ 22

4-7. Schematic Diagram - POWER Board - .......................... 23

4-8. Printed Wiring Boards

- SUB LED/SUB KEY Boards - ..................................... 24

4-9. Schematic Diagram - SUB LED/SUB KEY Boards - .... 24

5. EXPLODED VIEWS

5-1. Overall Section ............................................................... 29

5-2. Sub AMP Section ............................................................ 30

5-3. Subwoofer Cabinet Section ............................................ 31

6. ELECTRICAL PARTS LIST .............................. 32

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Sony SA-WCT770 User Manual

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