– 3 –
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
