4
HCD-DX155/DX255
TABLE OF CONTENTS
1. SERVICING NOTE ................................................... 5
2. GENERAL ................................................................... 8
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 11
3-2. Case, Front Panel Assy .................................................... 12
3-3. FL Board, SW Board ....................................................... 13
3-4. JACK Board, LED Board ................................................ 13
3-5. I/O Board, Tuner.............................................................. 14
3-6. SPEAKER Board, D.C. Fan ............................................ 14
3-7. MAIN Board.................................................................... 15
3-8. POWER Board ................................................................ 16
3-9. DVD Mechanism Deck (CDM81C-DVBU101) ............. 17
3-10. Tray.................................................................................. 18
3-11. MOTOR Board M761 (LD/ST Motor),
M762 (BU U/D Motor) ................................................... 18
3-12. Base Unit (DVBU101) .................................................... 19
3-13. Optical Pick-up (KHM-310CAB) ................................... 19
3-14. Gear (Sub Tray 1), Gear (Sub Tray 2) ............................. 20
3-15. Lever Assy ....................................................................... 20
3-16. Stocker Section ................................................................ 21
3-17. Cam (Stocker).................................................................. 21
3-18. Gear (Stocker 3) .............................................................. 22
3-19. Rotary Encoder (MD) ...................................................... 22
3-20. Gear (BU1) ...................................................................... 23
4. TEST MODE ............................................................... 24
5. ELECTRICAL ADJUSTMENT ............................. 28
6. DIAGRAMS
6-1. Block Diagram – RF Section –....................................... 30
6-2. Block Diagram – AMP Section – ................................... 31
6-3. Block Diagram – AUDIO Section – ............................... 32
6-4. Block Diagram – VIDEO Section – ............................... 33
6-5. Block Diagram – POWER Section –.............................. 34
6-6. Printed Wiring Board – MAIN Board (Side A) –............ 35
6-7. Printed Wiring Board – MAIN Board (Side B) – ............ 36
6-8. Schematic Diagram – MAIN Board (1/10) – ................. 37
6-9. Schematic Diagram – MAIN Board (2/10) – ................. 38
6-10. Schematic Diagram – MAIN Board (3/10) – ................. 39
6-11. Schematic Diagram – MAIN Board (4/10) – ................. 40
6-12. Schematic Diagram – MAIN Board (5/10) – ................. 41
6-13. Schematic Diagram – MAIN Board (6/10) – ................. 42
6-14. Schematic Diagram – MAIN Board (7/10) – ................. 43
6-15. Schematic Diagram – MAIN Board (8/10) – ................. 44
6-16. Schematic Diagram – MAIN Board (9/10) – ................. 45
6-17. Schematic Diagram – MAIN Board (10/10) – ............... 46
6-18. Printed Wiring Board – I/O Board – ............................... 47
6-19. Schematic Diagram – I/O Board – ................................. 48
6-20. Printed Wiring Boards – PANEL Section –..................... 49
6-21. Schematic Diagram – PANEL Section – ....................... 50
6-22. Printed Wiring Board – SPEAKER Board – ................... 51
6-23. Schematic Diagram – SPEAKER Board – .................... 51
6-24. Printed Wiring Boards – CD Mechanism Section – ....... 52
6-25. Schematic Diagram – CD Mechanism Section – .......... 53
6-26. Printed Wiring Board – POWER Board – ....................... 54
6-27. Schematic Diagram – POWER Board –........................ 55
7. EXPLODED VIEWS
7-1. Overall Section ................................................................ 67
7-2. Front Panel Section ......................................................... 68
7-3. Chassis Section ................................................................ 69
7-4. DVD Mechanism Deck Section-1
(CDM81C-DVBU101) .................................................... 70
7-5. DVD Mechanism Deck Section-2
(CDM81C-DVBU101) .................................................... 71
7-6. DVD Mechanism Deck Section-3
(CDM81C-DVBU101) .................................................... 72
7-7. Base Unit (DVBU101) .................................................... 73
8. ELECTRICAL PARTS LIST .................................. 74
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