Sony MZ-E90 User Manual

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Playing an MD right away! ................................................... 5

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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

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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

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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

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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

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7-1. Main Unit Section ............................................................... 37
7-2. Mechanism Deck Section ................................................... 38

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