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TABLE OF CONTENTS
HCD-GX25/RG220
1. GENERAL
Main Unit ................................................................................ 5
Remote Control ....................................................................... 6
2. DISASSEMBLY
2-1. Case (Top) ........................................................................... 9
2-2. CD Door .............................................................................. 9
2-3. CD Mechanism Block ....................................................... 10
2-4. Front Panel Section ........................................................... 11
2-5. Tape Mechanism Deck ...................................................... 12
2-6. Panel Board, 1 Stream Led Board, Remote Board ............ 12
2-7. Game Jack Board, H/P Jack Board ................................... 13
2-8. Back Panel Section ............................................................ 13
2-9. Main Board ....................................................................... 14
2-10. Power Amp Board ............................................................. 14
2-11. SW Board, Driver Board ................................................... 15
2-12. Base Unit ........................................................................... 15
2-13. Sensor Board ..................................................................... 16
2-14. Motor (TB) Board ............................................................. 17
2-15. Motor (LD) Board ............................................................. 17
2-16. BD Board .......................................................................... 18
3. TEST MODE
..................................................................... 19
4. ELECTRICAL ADJUSTMENTS
................................. 22
5. DIAGRAMS
5-1. IC Pin Descriptions ........................................................... 23
5-2. Block Diagram –CD Section– ........................................... 27
5-3. Block Diagram –Tuner/Tape/Panel Section– .................... 28
5-4. Block Diagram –Amp/Power Supply Section– ................. 29
5-5. Note for Printed Wiring Boards
and Schematic Diagrams .................................................. 30
5-6. Waveforms ......................................................................... 30
5-7. Circuit Boards Location .................................................... 30
5-8. Printed Wiring Board –CD Mechanism Section (1/2)
(HCD-GX25/RG220: Except AEP, UK, Russia Model)– . 31
5-9. Printed Wiring Board –CD Mechanism Section (1/2)
(HCD-RG220: AEP, UK, Russia Model)– ........................ 32
5-10. Schematic Diagram –CD Mechanism Section (1/2)– ....... 33
5-11. Printed Wiring Boards –CD Mechanism Section (2/2)– ... 34
5-12. Schematic Diagram –CD Mechanism Section (2/2)– ....... 35
5-13. Schematic Diagram –Main Section (1/4)– ........................ 36
5-14. Schematic Diagram –Main Section (2/4)– ........................ 37
5-15. Schematic Diagram –Main Section (3/4)– ........................ 38
5-16. Schematic Diagram –Main Section (4/4)– ........................ 39
5-17. Printed Wiring Board –Main Section– .............................. 40
5-18. Printed Wiring Boards and Schematic Diagram
–Jack Section– ................................................................... 41
5-19. Printed Wiring Boards –Panel Section– ............................ 42
5-20. Schematic Diagram –Panel Section– ................................ 43
5-21. Schematic Diagram –Power Amp Section (1/2)– ............. 44
5-22. Schematic Diagram –Power Amp Section (2/2)– ............. 45
5-23. Printed Wiring Board –Power Amp Section
(HCD-GX25/RG220:
Except AEP, UK, Russia, EA Model)– ............................. 46
5-24. Printed Wiring Board –Power Amp Section
(HCD-RG220: AEP, UK, Russia Model)– ........................ 47
5-25. Printed Wiring Board –Power Amp Section
(HCD-RG220: EA Model)– .............................................. 48
5-26. Printed Wiring Board –Transformer Section
(HCD-GX25/RG220:
Except AEP, UK, Russia, EA Model)– ............................. 49
5-27. Printed Wiring Board –Transformer Section
(HCD-RG220: AEP, UK, Russia Model)– ........................ 50
5-28. Printed Wiring Board –Transformer Section
(HCD-RG220: EA Model)– .............................................. 51
5-29. Schematic Diagram –Transformer Section
(HCD-GX25/RG220: Except EA Model)– ....................... 52
5-30. Schematic Diagram –Transformer Section
(HCD-RG220: EA Model)– .............................................. 53
5-31. IC Block Diagrams ............................................................ 54
6. EXPLODED VIEWS
6-1. Main Section ..................................................................... 56
6-2. Front Panel Section (1) ...................................................... 57
6-3. Front Panel Section (2) ...................................................... 58
6-4. Front Panel Section (3) ...................................................... 59
6-5. Main Board Section .......................................................... 60
6-6. CD Mechanism Deck Section (1) ..................................... 61
6-7. CD Mechanism Deck Section (2) ..................................... 62
6-8. Base Unit Section .............................................................. 63
7. ELECTRICAL PARTS LIST
........................................ 64
