Table Of Contents; Electrical Parts List 1 - Sony HCD-GT22 Service Manual

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1. SERVICING NOTES
2. GENERAL
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Case (Side-L), Case (Side-R) .......................................... 8
3-3. Case (Top) ....................................................................... 8
3-4. Lid (CD) .......................................................................... 9
3-5 CD Mechanism Deck
(CDM74KF-K6BD91UR-WOD), USB board ................ 9
3-6. Front Panel Block ............................................................ 10
3-7. Mecha Deck (CWN42FF609) ......................................... 10
3-8. Back Panel Block ............................................................ 11
3-9. MAIN Board .................................................................... 11
3-10. CD Board ......................................................................... 12
3-11. DRIVER Board, SW Board ............................................. 12
3-12. Optical Pick-up Block (KSM-213D) ............................... 13
3-13. SENSOR Board ............................................................... 13
3-14. MOTOR (TB) Board ....................................................... 14
3-15. MOTOR (LD) Board ....................................................... 14
4. TEST MODE
5. MECHANICAL ADJUSTMENTS
6. ELECTRICAL ADJUSTMENTS
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7. DIAGRAMS
7-1. Block Diagram - CD SERVO, USB Section - ............... 23
7-2. Block Diagram - MAIN Section - .................................. 24
7-3. Block Diagram - AMP Section - .................................... 25
7-4. Block Diagram - PANEL, POWER AMP Section - ....... 26
7-5. Printed Wiring Board - CD Board - ............................... 28
7-6. Schematic Diagram - CD Board - .................................. 29
7-7. Printed Wiring Boards - CHANGER Section - .............. 30
7-8. Schematic Diagram - CHANGER Section - .................. 31
7-9. Printed Wiring Board - USB Board - ............................. 32
7-10. Schematic Diagram - USB Board - ................................ 33
7-11. Printed Wiring Board - TC Board - ................................ 34
7-12. Schematic Diagram - TC Board - .................................. 35
7-13. Printed Wiring Boards - MAIN Section - ...................... 37
7-14. Schematic Diagram - MAIN Section (1/4) - .................. 38
7-15. Schematic Diagram - MAIN Section (2/4) - .................. 39
7-16. Schematic Diagram - MAIN Section (3/4) - .................. 40
7-17. Schematic Diagram - MAIN Section (4/4) - .................. 41
7-18. Printed Wiring Board - MIC Board - ............................. 42
7-19. Schematic Diagram - MIC Board - ................................ 43
7-20. Printed Wiring Board
- AMP Board (GT22/GT55) - ........................................ 44
7-21. Schematic Diagram - AMP Board (GT22/GT55) - ........ 45
7-22. Printed Wiring Board - AMP Board (GT44) - ............... 46
7-23. Schematic Diagram - AMP Board (GT44) - .................. 47
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TABLE OF CONTENTS

7-24. Printed Wiring Boards
- SUB WOOFER Section (GT44/GT55) - ..................... 48
7-25. Schematic Diagram
- SUB WOOFER Section (GT44/GT55) - ..................... 49
7-26. Printed Wiring Boards - PANEL Section - ..................... 50
7-27. Schematic Diagram - PANEL Section - ......................... 51
7-28. Printed Wiring Boards - KEY Section - ......................... 52
7-29. Schematic Diagram - KEY Section - ............................. 53
7-30. Printed Wiring Board
- TRANS Board (GT22/GT55) - .................................... 54
7-31. Schematic Diagram
- TRANS Board (GT22/GT55) - .................................... 55
7-32. Printed Wiring Board - TRANS Board (GT44) - ........... 56
7-34. Schematic Diagram - TRANS Board (GT44) - ............. 57
8. EXPLODED VIEWS
8-1. Case Section .................................................................... 69
8-2. KEY TOP Board Section ................................................. 70
8-3. TC Mecha Deck Section .................................................. 71
8-4. PANEL Board Section ..................................................... 72
8-5. Front Panel Section ......................................................... 73
8-6. MAIN Board Section ....................................................... 74
8-7. POWER Board, SUB WOOFER Board Section ............. 75
8-8. Chassis Section ................................................................ 76
8-9. CD Mechanism Deck Section-1
(CDM74KF-K6BD91UR-WOD) .................................... 77
8-10. CD Mechanism Deck Section-2
(CDM74KF-K6BD91UR-WOD) .................................... 78
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9. ELECTRICAL PARTS LIST
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HCD-GT22/GT44/GT55
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