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1. SERVICING NOTE ......................................................... 4
2. GENERAL .........................................................................5
Looking at the Controls ........................................................5
Recording an MD Right Away! ............................................6
Playing an MD Right Away! ................................................. 7
3. DISASSEMBLY ............................................................... 8
3-1. Block Assy, Bottom ..............................................................8
3-2. Panel Block Assy, Upper.......................................................8
3-3. LCD Module .........................................................................9
3-4. Main Board ........................................................................... 9
3-5. MD Mechanism Deck......................................................... 10
3-6. Service Assy, OP .................................................................10
3-7. Holder Assy......................................................................... 11
3-8. Motor Flexible Board ..........................................................11
3-9. Motor, DC (M602) ..............................................................12
3-10. “Motor, DC (M601)”, “Motor, DC (M603)” ....................12
4. TEST MODE...................................................................13
4-1. Outline................................................................................. 13
4-2. Test Mode ............................................................................13
4-3. Manual Mode ......................................................................14
4-4. Overall Adjustment Mode ................................................... 15
4-5. Sound Skip Check Result Display Mode ............................16
4-6. Self-diagnosis Display Mode .............................................. 17
4-7. Key Check Mode................................................................. 19
TABLE OF CONTENTS
5. ELECTRICAL ADJUSTMENTS.............................. 20
5-1. Outline................................................................................. 20
5-2. Precautions for Adjustment ................................................. 20
5-3. Adjustment Sequence .......................................................... 20
5-4. NV Reset ............................................................................. 20
5-5. Power Supply Manual Adjustment......................................20
5-6. Temperature Correction....................................................... 22
5-7. Overall Adjustment Mode ................................................... 22
5-8. Laser Power Check ............................................................. 23
6. DIAGRAMS.....................................................................25
6-1. Block Diagram – MD Section –.......................................... 25
6-2. Block Diagram – Audio Section – ......................................27
6-3. Block Diagram – Power Supply Section –.......................... 29
6-4. Printed Wiring Board – Main Board – ................................ 31
6-5. Schematic Diagram – Main Board (1/3) – .......................... 35
6-6. Schematic Diagram – Main Board (2/3) – .......................... 37
6-7. Schematic Diagram – Main Board (3/3) – .......................... 39
6-8. IC Block Diagrams..............................................................41
6-9. IC Pin Descriptions ............................................................. 44
7. EXPLODED VIEWS .....................................................51
7-1. Cabinet Section ...................................................................51
7-2. Mechanism Deck Section ................................................... 52
8. ELECTRICAL PARTS LIST...................................... 53