– 3 –
TABLE OF CONTENTS
1. SERVICING NOTE .......................................................... 4
2. GENERAL .......................................................................... 7
3. DISASSEMBLY
3-1. Case and Front Panel ............................................................ 8
3-2. Back Panel and Disc Table.................................................... 8
3-3. Base Unit ............................................................................. 9
3-4. Bracket (Gear) Assembly...................................................... 9
4. TEST MODE ..................................................................... 10
5. ELECTRICAL BLOCK CHECKING ........................ 13
6. DIAGRAMS
6-1. Circuit Boards Location ...................................................... 15
6-2. Schematic Diagram – BD Section – ................................... 17
6-3. Printed Wiring Board – BD Section – ................................. 19
6-4. Printed Wiring Board – Main Section –.............................. 21
6-5. Schematic Diagram – Main (1/2) Section –........................ 23
6-6. Schematic Diagram – Main (2/2) Section –........................ 25
6-7. Printed Wiring Board – Motor Section – ............................ 27
6-8. Schematic Diagram – Motor Section – ............................... 28
6-9. Schematic Diagram – Panel Section – ................................ 29
6-10. Printed Wiring Board – Panel Section –............................ 31
6-11. IC Pin Functions................................................................ 33
6-12. IC Block Diagrams............................................................ 37
7. EXPLODED VIEWS
7-1. Case Section........................................................................ 40
7-2. Front Panel Section ............................................................. 41
7-3. Back Panel and Disc Table Section..................................... 42
7-4. Chassis Section ................................................................... 43
7-5. Base Unit Section (BU-5BD25).......................................... 44
8. ELECTRICAL PARTS LIST ........................................ 45
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