2
HCD-BC150/BC250
TABLE OF CONTENTS
1. SERVICING NOTE ................................................... 3
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 6
2-2. Case, Front Panel Assy Section ....................................... 7
2-3. PANEL Board, FL Board, H/P Board,
POWER SW Board ......................................................... 8
2-4. Switching Regulator ........................................................ 8
2-5. AMP Board...................................................................... 9
2-6. DMB09 Board ................................................................. 9
2-7. SPK Board, IO Board, DC Fan ....................................... 10
2-8. MAIN Board.................................................................... 10
2-9. LF Board.......................................................................... 11
2-10. MD Rear Cover ............................................................... 11
2-11. DVD Mechanism Deck (CDM81C-DVBU100) ............. 12
2-12. Tray.................................................................................. 13
2-13. MOTOR Board, M761 (LD/SD Motor),
M762 (BU U/D Motor) ................................................... 13
2-14. Base Unit (DVBU100) .................................................... 14
2-15. Optical Pick-up (KHM-310AAB/C2NP) ........................ 14
3. TEST MODE ............................................................... 15
4. ELECTRICAL ADJUSTMENT ............................. 19
5. DIAGRAMS
5-1. Block Diagram – RF/SERVO Section – ......................... 22
– VIDEO Section – .......................................................... 23
– AMP Section –.............................................................. 24
– AUDIO Section –.......................................................... 25
– POWER Section – ........................................................ 26
5-2. Printed Wiring Board – DVD Mechanism Section – ...... 27
5-3. Schematic Diagram – DVD Mechanism Section – ........ 28
5-4. Printed Wiring Board – DMB09 Section (Side A) – ...... 29
5-5. Printed Wiring Board – DMB09 Section (Side B) – ...... 30
5-6. Schematic Diagram – DMB09 Section (1/4) – .............. 31
5-7. Schematic Diagram – DMB09 Section (2/4) – .............. 32
5-8. Schematic Diagram – DMB09 Section (3/4) – .............. 33
5-9. Schematic Diagram – DMB09 Section (4/4) – .............. 34
5-10. Printed Wiring Board – MAIN Section (Side A) – ......... 35
5-11. Printed Wiring Board – MAIN Section (Side B) – ......... 36
5-12. Schematic Diagram – MAIN Section (1/3) – ................. 37
5-13. Schematic Diagram – MAIN Section (2/3) – ................. 38
5-14. Schematic Diagram – MAIN Section (3/3) – ................. 39
5-15. Printed Wiring Board – PANEL/FL/POWER SW/
H/P/AMP RETAINER Section –..................................... 40
5-16. Schematic Diagram – PANEL/FL/POWER SW/
H/P/AMP RETAINER Section –..................................... 41
5-17. Printed Wiring Board – IO Section – .............................. 42
5-18. Schematic Diagram – IO Section – ................................ 43
5-19. Printed Wiring Board – AMP Section (Side A) –........... 44
5-20. Printed Wiring Board – AMP Section (Side B) – ........... 45
5-21. Schematic Diagram – AMP Section (1/4) – ................... 46
5-22. Schematic Diagram – AMP Section (2/4) – ................... 47
5-23. Schematic Diagram – AMP Section (3/4) – ................... 48
5-24. Schematic Diagram – AMP Section (4/4) – ................... 49
5-25. Printed Wiring Board – SPK/LF Section – .................... 50
5-26. Schematic Diagram – SPK/LF Section – ....................... 50
6. EXPLODED VIEWS
6-1. Overall Section ................................................................ 70
6-2. Front Panel Section ......................................................... 71
6-3. Chassis Section ................................................................ 72
6-4. DVD Mechanism Deck Section-1
(CDM81C-DVBU100) .................................................... 73
6-5. DVD Mechanism Deck Section-2
(CDM81C-DVBU100) .................................................... 74
6-6. DVD Mechanism Deck Section-3
(CDM81C-DVBU100) .................................................... 75
6-7. Base Unit Section (DVBU100) ....................................... 76
7. ELECTRICAL PARTS LIST .................................. 77