Nakamichi OMS 5 Service Manual

Page 2

CONTENTS

NH

10.
11.

General ...................................................................... 2
Pickup Replacement Procedures .................................................... 2
2. 1. Notice in Handling Pickup ............................................... 2
2, 2. Pickup Replacement Procedures ........................................... 2
2. 3. Adjustment After Replacement of Pickup ....................................... 3
Measurement Instruments and Test Discs ............................................... 4
Parts Location for Adjustment ...................................................... 4
4. 1. Parts oanCB Assy ..................................................... 4

4 2. Parts on Pickup ............................ 4
Adjustments .................................... 5
5. 1. Notes ................................... . . . . 5
5. 2. Adjustment Instructions ................................ . . . . 5
Mechanism Assy and Parts List .............................................. . . . . . 1o
6. 1. Synthesis ............................................................ 1o
6, 2. Front Panel Assy (A01) 11
6. 3. Chassis Assy (A02) ..................................................... 12
6. 4. Disc Mechanism Assy (B01) .............................................. 13
6. 5. Rear Panel Assy (302) ................................................. 15
6. 6. Disc Mechanism Sub Ass y (001) ............................................. 15
6. 7. Analog Processor Unit (D01) .............................
Mounting Diagrams and Parts List ..................................
7 1. Photo Transistor P. C B. Ass y .............................. 17
7. 2. Photo Diode P. C. B. Ass y ................................ 17
7. 3. Open End Switch P.C.B. Assy 17
7. 4. Close End Switch P.C.B. Assy 17
7. 5. Eject/Load Switch P.C.B. Assy .............................................. 17
7. 6. Power Switch P.C.B. Assy ................................................. 17
7. 7. Remote Control P.C.B. Assy .............................. 17
7. 8, Pin Jack P.C.B. Ass'y ..................................................... 1s
7. 9. FL Indicator P.C.B. Assy .................................................. 18
7. 10. Auto Power Control P.C.B. Assy ............................................. 19
7. 11. RF PrevAmp. P.C.B. Assy ................................................. 20
7. 12. Power Supply P.C.B. Assy ................................................. 21
7. 13. Control Switch P.C.B. Assy ................... ' ............................. 22
7. 14. Analog Processor P.C.B. Assy . . .............................................. 22
7. 15. D/A Converter 1. C. B. Assy ................................................ 23
7. 16. Main P. C. B Assy ....................................................... 26
Schematic Diagram .............................................................. 27
8. 1. IC Block Diagrams and Descriptions ........................................... 27
8. 2. Waveforms at Major Points ................................................. 37
8. 3. Schematic Diagram ...................................................... 38
Wiring Diagram ................................................................ 39
Block Diagram ................................................................. 40
Specifications ................................................................. 41