Sony MDX-M690, Service Manual

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MDX-M690
1. SERVICING NOTES
............................................... 4
2. GENERAL
Location of Controls ....................................................... 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 8
3-2. Cover ............................................................................... 9
3-3. Front Panel (Key) Assy ................................................... 9
3-4. Mechanism Deck (MG-164MA-138) ............................. 10
3-5. Motor Block Assy, Cam (R) Assy .................................. 10
3-6. Sub Panel Assy ................................................................ 11
3-7. MAIN Board ................................................................... 11
3-8. Heat Sink ......................................................................... 12
3-9. SERVO Board ................................................................. 12
3-10. MD Cover Assy ............................................................... 13
3-11. Float Block ...................................................................... 13
3-12. Lo Motor Assy (Loading) (M903) .................................. 14
3-13. Lever (LE23) Assy .......................................................... 14
3-14. Holder Assy ..................................................................... 15
3-15. Chucking Arm Assy ........................................................ 15
3-16. Optical Pick-up (KMS-241C) ......................................... 16
3-17. SL Motor Assy (Sled) (M902),
SP Motor Assy (Spindle) (M901) ................................... 16
4. ASSEMBLY
4-1. Assembly Flow ................................................................ 17
4-2. Motor Block Assy ........................................................... 18
4-3. Cam (R) Assy .................................................................. 18
4-4. Adjusting Phase of Motor Block Assy,
Cam (R) Assy .................................................................. 19
4-5. Phase Check .................................................................... 19
5. ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 20
MD Section ..................................................................... 20
Tuner Section .................................................................. 20
TABLE OF CONTENTS
6. DIAGRAMS
6-1. Block Diagram – SERVO Section – ............................... 21
6-2. Block Diagram – TUNER Section – .............................. 22
6-3. Block Diagram – MAIN Section – ................................. 23
6-4. Block Diagram – DISPLAY/BUS CONTROL/
POWER SUPPLY Section – ........................................... 24
6-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 25
6-6. Printed Wiring Boards – SERVO Section – ................... 27
6-7. Schematic Diagram – SERVO Section (1/2) – ............... 28
6-8. Schematic Diagram – SERVO Section (2/2) – ............... 29
6-9. Printed Wiring Board – MAIN Section (1/2) – .............. 30
6-10. Printed Wiring Boards – MAIN Section (2/2) – ............ 31
6-11. Schematic Diagram – MAIN Section (1/4) – ................. 32
6-12. Schematic Diagram – MAIN Section (2/4) – ................. 33
6-13. Schematic Diagram – MAIN Section (3/4) – ................. 34
6-14. Schematic Diagram – MAIN Section (4/4) – ................. 35
6-15. Printed Wiring Board – SUB MD Board – ..................... 36
6-16. Schematic Diagram – SUB MD Board – ....................... 37
6-17. Printed Wiring Board – KEY Board – ............................ 38
6-18. Schematic Diagram – KEY Board – .............................. 39
6-19. Printed Wiring Board – DISPLAY Board – ................... 40
6-20. Schematic Diagram – DISPLAY Board – ...................... 41
6-21. IC Pin Function Description ........................................... 49
7. EXPLODED VIEWS
7-1. Sub Panel Section ............................................................ 61
7-2. Front Panel (DSPL) Section ........................................... 62
7-3. Front Panel (KEY) Section ............................................. 63
7-4. MAIN Board Section ...................................................... 64
7-5. Mechanism Deck Section-1 (MG-164MA-138) ............ 65
7-6. Mechanism Deck Section-2 (MG-164MA-138) ............ 66
8. ELECTRICAL PARTS LIST
............................... 67