Sony STR-KM77 - Servicing Notes; Test Modes; Diagrams and Schematics; Electrical Parts List

STR-KM22/KM55/KM77
3
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
1. SERVICING NOTES
................................................. 4
2. DISASSEMBLY
2-1. Disassembly Flow .............................................................. 6
2-2. Case .................................................................................... 6
2-3. Front Panel Section ............................................................ 7
2-4. Back Panel Section ............................................................ 8
2-5. SUB RECTIFIER Board, Main Block ............................... 9
2-6. DSP Board, SURR BACK AMP Board, MAIN Board,
Heatsink Block ................................................................. 10
3. TEST MODE
...............................................................11
4. ELECTRICAL CHECK
........................................... 13
5. DIAGRAMS
5-1. Block Diagram - HDMI/USB Section - ........................... 15
5-2. Block Diagram - AUDIO Section - .................................. 16
5-3. Block Diagram - AMP Section - ...................................... 17
5-4. Block Diagram
- DISPLAY/POWER SUPPLY Section - ......................... 18
5-5. Printed Wiring Board
- MAIN Board (Component side) - .................................. 21
5-6. Printed Wiring Board
- MAIN Board (Conductor side) - ................................... 22
5-7. Schematic Diagram - MAIN Board (1/9) - ...................... 23
5-8. Schematic Diagram - MAIN Board (2/9) - ...................... 24
5-9. Schematic Diagram - MAIN Board (3/9) - ...................... 25
5-10. Schematic Diagram - MAIN Board (4/9) - ...................... 26
5-11. Schematic Diagram - MAIN Board (5/9) - ...................... 27
5-12. Schematic Diagram - MAIN Board (6/9) - ...................... 28
5-13. Schematic Diagram - MAIN Board (7/9) -. ..................... 29
5-14. Schematic Diagram - MAIN Board (8/9) - ...................... 30
5-15. Schematic Diagram - MAIN Board (9/9) - ...................... 31
5-16. Printed Wiring Board - HDMI RE PC Board - ................ 32
5-17. Schematic Diagram - HDMI RE PC Board (1/2) - .......... 33
5-18. Schematic Diagram - HDMI RE PC Board (2/2) - .......... 34
TABLE OF CONTENTS
5-19. Printed Wiring Board - DSP Board - ............................... 35
5-20. Schematic Diagram - DSP Board (1/2) - ......................... 36
5-21. Schematic Diagram - DSP Board (2/2) - ......................... 37
5-22. Printed Wiring Board - STANDBY Board - .................... 38
5-23. Schematic Diagram - STANDBY Board - ....................... 39
5-24. Printed Wiring Board
- SUB RECTIFIER Board (KM55, KM77) - .................. 40
5-25. Schematic Diagram
- SUB RECTIFIER Board (KM55, KM77) - .................. 40
5-26. Printed Wiring Board - TUNER1AMPR Board - ............ 41
5-27. Schematic Diagram - TUNER1AMPR Board - ............... 41
5-28. Printed Wiring Board
- FRONT USB Board (EXCEPT SAF, AR) - .................. 41
5-29. Schematic Diagram
- FRONT USB Board (EXCEPT SAF, AR) - .................. 41
5-30. Printed Wiring Board
- SURR BACK AMP Board (KM77) - ............................ 42
5-31. Schematic Diagram
- SURR BACK AMP Board (KM77) - ............................ 42
5-32. Printed Wiring Board - DISPLAY Board - ...................... 43
5-33. Schematic Diagram - DISPLAY Board - ......................... 43
5-34. Printed Wiring Board - LED BAR Board - ...................... 44
5-35. Schematic Diagram - LED BAR Board - ........................ 45
5-36. Printed Wiring Board - NFC CHAIN Board - ................. 46
5-37. Schematic Diagram - NFC CHAIN Board - .................... 46
5-38. Printed Wiring Board - POWER KEY Board -................ 46
5-39. Schematic Diagram - POWER KEY Board - .................. 46
6. EXPLODED VIEWS
6-1. Case Section ..................................................................... 63
6-2. Front Panel Section .......................................................... 64
6-3. Back Panel Section .......................................................... 65
6-4. Chassis Section ................................................................ 66
6-5. Heatsink Section .............................................................. 67
7. ELECTRICAL PARTS LIST
................................ 68
Ver. 1.1