HCD-GNZ77D, HCD-GNZ88D, MHC-GNZ77D, MHC-GNZ88D - Sony Audio Service Manual (repair manual). Page 5

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Main Unit ................................................................................ 6
Remote Control ....................................................................... 8

2-1.   Cabinet Steel Case ............................................................. 10
2-2.   Loading Panel .................................................................... 10
2-3.   Front Panel Section ........................................................... 11
2-4.   DVD Block Section ........................................................... 11
2-5.   Back Panel Section ............................................................ 12
2-6.   Main Board, ADC Board .................................................. 12
2-7.   Speaker Board, S-Master Board ........................................ 13
2-8.   Power Board ...................................................................... 13
2-9.   Tape Mechanism Deck ...................................................... 14
2-10. Holder TC-R Assy, Holder TC-L Assy ............................. 14
2-11. Mic Board ......................................................................... 15
2-12. Karaoke Board, Video Board ............................................ 15
2-13. DMB15 Board ................................................................... 16
2-14. Sensor Board ..................................................................... 16
2-15. Motor (TB) Board ............................................................. 17
2-16. Motor (LD) Board ............................................................. 17
2-17. Pick-Up Unit ..................................................................... 18
2-18. SW Board, Driver Board ................................................... 18

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6-1.   Block Diagram — RF/Servo Section — ........................... 27
6-2.   Block Diagram — Video Section — ................................. 28
6-3.   Block Diagram — Main Section — .................................. 29
6-4.   Block Diagram — Audio Section — ................................ 30
6-5.   Block Diagram — Function/Power Section — ................. 31
6-6.   Circuit Boards Location .................................................... 32
6-7.   Printed Wiring Boards — Driver Section — ..................... 34
6-8.   Schematic Diagram — Driver Section — ......................... 35
6-9.   Printed Wiring Board — DMB15 Section — ................... 36
6-10. Schematic Diagram — DMB15 Section (1/5) — ............. 38
6-11. Schematic Diagram — DMB15 Section (2/5) — ............. 39
6-12. Schematic Diagram — DMB15 Section (3/5) — ............. 40
6-13. Schematic Diagram — DMB15 Section (4/5) — ............. 41
6-14. Schematic Diagram — DMB15 Section (5/5) — ............. 42

6-15. Printed Wiring Board — Main Section — ........................ 43
6-16. Schematic Diagram — Main Section (1/4) — .................. 44
6-17. Schematic Diagram — Main Section (2/4) — .................. 45
6-18. Schematic Diagram — Main Section (3/4) — .................. 46
6-19. Schematic Diagram — Main Section (4/4) — .................. 47
6-20. Printed Wiring Board — S-Master Section — .................. 48
6-21. Schematic Diagram — S-Master Section (1/4) — ............ 50
6-22. Schematic Diagram — S-Master Section (2/4) — ............ 51
6-23. Schematic Diagram — S-Master Section (3/4) — ............ 52
6-24. Schematic Diagram — S-Master Section (4/4) — ............ 53
6-25. Printed Wiring Board — ADC Section — ........................ 54
6-26. Schematic Diagram — ADC Section — ........................... 55
6-27. Printed Wiring Boards — Panel Section — ...................... 56
6-28. Printed Wiring Board — Volume Section — .................... 57
6-29. Schematic Diagram — Panel Section — .......................... 58
6-30. Printed Wiring Board — Mic Section — .......................... 59
6-31. Schematic Diagram — Mic Section — ............................. 60
6-32. Printed Wiring Board — Karaoke Section — ................... 61
6-33. Schematic Diagram — Karaoke Section — ...................... 62
6-34. Printed Wiring Board — Video Section — ....................... 63
6-35. Schematic Diagram — Video Section — .......................... 64
6-36. Printed Wiring Board — Speaker Section — ................... 65
6-37. Schematic Diagram — Speaker Section — ...................... 66
6-38. Printed Wiring Board — Power Section — ...................... 67
6-39. Schematic Diagram — Power Section — ......................... 68

7-1.   Main Section ..................................................................... 79
7-2.   Front Panel Section (1) ...................................................... 80
7-3.   Front Panel Section (2) ...................................................... 81
7-4.   Front Panel Section (3) ...................................................... 82
7-5.   Chassis Section (HCD-GNZ88D) ..................................... 83
7-6.   Chassis Section (HCD-GNZ77D) ..................................... 84
7-7.   DVD Block Section ........................................................... 85
7-8.   DVD Mechanism Deck Section (1) .................................. 86
7-9.   DVD Mechanism Deck Section (2) .................................. 87

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