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WX-7700MDX
1. SERVICING NOTES ................................................ 4
2. GENERAL
Location of Controls....................................................... 5
3. DISASSEMBLY
3-1. Disassembly Flow........................................................... 10
3-2. Front P anel Section......................................................... 11
3-3. DISPLAY Boar d............................................................. 11
3-4. Chassis (T) Section......................................................... 12
3-5. MD Mechanism Deck (MG-164MF-138)...................... 12
3-6. POWER Board, Chassis (T) Assy.................................. 13
3-7. Heat Sink ........................................................................\
. 13
3-8. SERVO (MD) Board....................................................... 14
3-9. MD Cov er Assy............................................................... 14
3-10. Float Block ...................................................................... 15
3-11. LO Motor Assy................................................................ 15
3-12. Lever Assy (LE).............................................................. 16
3-13. Holder Assy ..................................................................... 16
3-14. Chucking ARM Assy...................................................... 17
3-15. Optical Pick-up (KMS-241C)......................................... 17
3-16. SL Motor Assy (SLED) (M902)/ SP Motor Assy (SPINDLE) (M901)............................... 18
3-17. CD Mechanism Deck (MG-398D-121).......................... 18
3-18. Motor Assy (Front Panel Open/Close) (M640) .............. 19
3-19. MAIN Board, Chassis (B) Assy..................................... 19
3-20. Brack et (MAIN).............................................................. 20
3-21. Chassis (T388) Assy....................................................... 20
3-22. Sensor (CD) Board.......................................................... 21
3-23. Servo Board, LO Motor SUB Assy (Loading) (M103) ........................................................................\
..... 21
3-24. ARM Roller Assy, LO AD Board.................................... 22
3-25. Floating Bloc k Assy........................................................ 22
3-26. Optical Pick-up (KSS-720A), Sled Motor Assy (M101) ........................................................................\
..... 23
4. ASSEMBLY
4-1. Assembly of ARM (L/R) Assy....................................... 23
5. DIAGRAMS
5-1. Block Diagram - CD SERVO Section -....................... 24
5-2. Block Diagram - MD SERVO Section -...................... 25
5-3. Block Diagram - MAIN Section -................................ 26
5-4. Block Diagram - DISPLAY/BUS CONTR OL Section -........................ 27
5-5. Block Diagram - POWER SUPPLY Section -............. 28
5-6. Note for Printed Wiring Boards and Schematic Diagrams ....................................................... 29
5-7. Printed Wiring Boards - CD Section (1/2) -................ 30
5-8. Printed Wiring Board - CD Section (2/2) -.................. 31
5-9. Schematic Diagram - CD Section -.............................. 32
5-10. Printed Wiring Boards - MD Section -......................... 33
5-11. Schematic Diagram - MD Section (1/2) -.................... 34
5-12. Schematic Diagram - MD Section (2/2) -.................... 35
5-13. Printed Wiring Boards - MAIN Board (Component Side) -.............................. 36
5-14. Printed Wiring Board - MAIN Board (Conductor Side) -................................ 37
5-15. Schematic Diagram - MAIN Board (1/4) -................... 38
5-16. Schematic Diagram - MAIN Board (2/4) -................... 39
5-17. Schematic Diagram - MAIN Board (3/4) -................... 40
5-18. Schematic Diagram - MAIN Board (4/4) -................... 41
5-19. Printed Wiring Board - DISPLAY Board (Component Side) - ........................ 42 5-20. Printed Wiring Boards
- DISPLAY Board (Conductor Side) - .......................... 43
5-21. Schematic Diagram - DISPLAY Board (1/2) -............. 44
5-22. Schematic Diagram - DISPLAY Board (2/2) -............. 45
5-23. Printed Wiring Board - KEY Board (Component Side) -................................. 46
5-24. Printed Wiring Board - KEY Board (Conductor Side) -................................... 47
5-25. Schematic Diagram - KEY Board -............................. 48
5-26. Schematic Diagram - SUB/POWER Boards -............. 49
5-27. Printed Wiring Board - POWER Board (Component Side) - ........................... 50
5-28. Printed Wiring Boards - POWER Board (Conductor Side)/SUB Board -...................................... 51
5-29. IC Pin Function Description........................................... 63
6. EXPLODED VIEWS
6-1. MAIN Section ................................................................. 78
6-2. SUB Panel SUB Assy Section........................................ 79
6-3. Front P anel Section......................................................... 80
6-4. Front Panel SUB Section................................................ 81
6-5. DISPLAY Boar d Section................................................ 82
6-6. Chassis (T) Assy Section................................................ 83
6-7. Chassis (B) Assy Section-1............................................. 84
6-8. Chassis (B) Assy Section-2............................................. 85
6-9. MD Mechanism Deck Section-1 (MG-164MF-138) ..... 86
6-10. MD Mechanism Deck Section-2 (MG-164MF-138) ..... 87
6-11. MD Mechanism Deck Section-3 (MG-164MF-138) ..... 88
6-12. CD Mechanism Deck Section-1 (MG-398D-121)......... 89
6-13. CD Mechanism Deck Section-2 (MG-398D-121)......... 90
6-14. CD Mechanism Deck Section-3 (MG-398D-121)......... 91
7. ELECTRICAL PARTS LIST ............................... 92
TABLE OF CONTENTS
