Sony HCD-GPX33 - Page 3

HCD-GPX33/GPX55/GPX77/GPX88
3
TABLE OF CONTENTS
1. SERVICING NOTES
................................................ 4
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 8
2-2. Side-L Panel, Side-R Panel, Top Panel ........................... 9
2-3. Loading Panel ................................................................. 9
2-4. Front Panel Section ......................................................... 10
2-5. CD Mechanism Section (CDM90-DVBU202//M) ......... 10
2-6. MB Board ....................................................................... 11
2-7. Chassis Section ............................................................... 11
2-8. Service Optical Device, Wire (Flat Type) ....................... 12
3. TEST MODE ............................................................. 13
4. ELECTRICAL CHECK .......................................... 16
5. TROUBLESHOOTING ........................................... 17
6. DIAGRAMS
6-1. Block Diagram - CD/USB Section - ............................... 23
6-2. Block Diagram - MAIN Section - ................................... 24
6-3. Block Diagram - AMP Section - ..................................... 25
6-4. Block Diagram -
PANEL/POWER SUPPLY Section - .............................. 26
6-5. Printed Wiring Board -
MB Board (Component side) .......................................... 28
6-6. Printed Wiring Board -
MB Board (Conductor side) ........................................... 29
6-7. Schematic Diagram - MB Board (1/9) - ......................... 30
6-8. Schematic Diagram - MB Board (2/9) - ......................... 31
6-9. Schematic Diagram - MB Board (3/9) - ......................... 32
6-10. Schematic Diagram - MB Board (4/9) - ......................... 33
6-11. Schematic Diagram - MB Board (5/9) - ......................... 34
6-12. Schematic Diagram - MB Board (6/9) - ......................... 35
6-13. Schematic Diagram - MB Board (7/9) - ......................... 36
6-14. Schematic Diagram - MB Board (8/9) - ......................... 37
6-15. Schematic Diagram - MB Board (9/9) - ......................... 38
6-16. Printed Wiring Board - STR Board - .............................. 39
6-17. Schematic Diagram - STR Board - ................................. 40
6-18. Printed Wiring Board - DISPLAY Board ........................ 41
6-19. Schematic Diagram - DISPLAY Board - ........................ 42
6-20. Printed Wiring Board - MIC Board (GPX88) - ............. 43
6-21. Schematic Diagram - MIC Board (GPX88) - ................. 43
6-22. Printed Wiring Board - VOLUME Board - ..................... 44
6-23. Schematic Diagram - VOLUME Board - ....................... 44
6-24. Printed Wiring Board - BASS BAZUCA Board - .......... 44
6-25. Schematic Diagram - BASS BAZUCA Board - ............. 44
7. EXPLODED VIEWS
7-1. Side Panel Section .......................................................... 57
7-2. DC Fan, CDM90 Bracket Section ................................. 58
7-3. Front Panel Section ......................................................... 59
7-4. Chassis Section ............................................................... 60
7-5. CD Mechanism Section
(CDM90-DVBU202//M) ................................................ 61
8. ELECTRICAL PARTS LIST ............................... 62