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1. SERVICING NOTE ......................................................... 4
2. GENERAL .........................................................................5
Playing an MD right away! ...................................................5
3. DISASSEMBLY ............................................................... 7
3-1. Panel Assy, Upper .................................................................7
3-2. Holder Assy...........................................................................7
3-3. Mechanism Deck ..................................................................8
3-4. Main Board ........................................................................... 8
3-5. Service Assy, OP ................................................................... 9
4. TEST MODE...................................................................10
4-1. General ................................................................................10
4-2. Setting the Test Mode ......................................................... 10
4-2-1. How to Set the Test Mode ...........................................10
4-2-2. Operations when the Test Mode is Set ........................ 10
4-2-3. How to Release the Test Mode ....................................10
4-3. Test Mode Structure ............................................................10
4-4. Manual Mode ......................................................................11
4-4-1. Outline of the Function ............................................... 11
4-4-2. How to Set the Manual Mode......................................11
4-5. Overall Adjustment Mode ................................................... 11
4-5-1. Outline of the Function ............................................... 11
5. ELECTRICAL ADJUSTMENTS ..............................12
5-1. General ................................................................................12
5-2. Notes for Adjustment .......................................................... 12
5-2-1. Jigs............................................................................... 12
5-2-2. Adjustment Sequence ..................................................12
5-2-3. Power ...........................................................................12
5-3. Reset NV .............................................................................12
5-3-1. How to Reset NV ........................................................12
5-4. Overall Adjustment Mode ................................................... 12
5-4-1. Overall Adjustment Mode Structure............................ 12
5-4-2. Overall CD and MO Adjustment Method ................... 12
5-4-3. Overall CD and MO Adjustment Items ....................... 13
TABLE OF CONTENTS
6. DIAGRAMS.....................................................................14
6-1. IC Pin Description .............................................................. 14
6-1-1. IC801 RU6915MF-0006 (System Control)................. 14
6-2. Block Diagrams .................................................................. 17
6-2-1. MD Block Diagram ..................................................... 17
6-2-2. Servo, System Control Block Diagram ....................... 19
6-3. Printed Wiring Boards and Schematic Diagrams................ 21
6-3-1. Printed Wiring Board – Main Board – ........................ 21
6-3-2. Schematic Diagram – Main Board (1/4) – .................. 25
6-3-3. Schematic Diagram – Main Board (2/4) – .................. 27
6-3-4. Schematic Diagram – Main Board (3/4) – .................. 29
6-3-5. Schematic Diagram – Main Board (4/4) – .................. 31
6-4. IC Block Diagrams ............................................................. 33
7. EXPLODED VIEWS .....................................................37
7-1. Main Unit Section ............................................................... 37
7-2. Mechanism Deck Section ...................................................38
8. ELECTRICAL PARTS LIST...................................... 39