Sansui AU 9900 AU 11000 Service Manual

Page 2

This service manual is designed for service engineers to repair, adjust,
maintain and order the replacement parts of the AU-9900 and AU-11000
correctly.

When ordering the parts, use the stock number and parts name specific-
ally referring to the Parts Locations & Parts Lists.

For general usage and maintenance of the unit, please refer to the
Operating instructions attached with the unit.

TABLE OF CONTENTS

Section Title Page

SPECIFICATIONS ...............................................
BLOCK DIAGRAM .
ADJUSTMENTS ....... ....
TROUBLESHOOTING .......
4-1, Troubleshooting Chart
4-2. Operation Block Diagram ............
5. PARTS LOCATION AND PARTS LIST
5-1. F-2566 Power Supply Circuit Board .....................
5 2 F-2568 Regulated Power Supply & Protector Circuit Board .
5 3 F-2567 Power Supply Circuit Board for Driver AMP. .....
5 4. F-2582 Power Supply Circuit Board for Driver AMP. M.
5-5. F-2570 Equalizer Circuit Board .......................
5 6
5 7
5 8

PPP!

F-2569 Input Terminal 8: Switch Circuit Board .........
F-2573 Filter & Accessory Circuit Board ......
F-2574 Buffer AMP. Circuit Board ........
5-9. F-2575 Tone Midrange Circuit Board .....

5-10. F-2576 Tone Bass & Treble Circuit Board ... 10
5-11. F-258i Power AMP. (+) Circuit Board 11
5-12. F-258i Power AMP. (-) Circuit Board ............ 11
5-13. F-2571 Tape Copy & Tuner Switch Circuit Board .. .. 11
5-14. F-2577 Tone Selector (Treble) Circuit Board .................... 12
5-15. F-2578 Tone Selector (Bass) Circuit Board ...................... 12
5-16. F-2572 Tape Play Circuit Board ........... .. 12
5-17. F<2579 Pre-Main Switch Circuit Board . 12
5-18. F-2580 Driver AMP. Circuit Board ..... 13
5-19. F~2583 Driver AMP. Circuit Board ..... 14
5-20. Figures ............................. 15
5-21. Other Parts (Front Side) ........... 16
5-22. Other Parts (Top & Bottom Side) 17
6. SCHEMATIC DIAGRAM ............ 18
6"]. AU-9900 Pre AMP. Section .. 18
6-2. AU-9900 Power AMP. Section . 19
6-3. AU-1IOOO Pre AMP. Section. . .. , 20
6-4. AU-11000 Power AMP, Section . 21
6-5. F-2582, F-2583 ..................................... 22

7. PACKING LIST .......................................... baclt 'c'over
8. ACCESSORY PARTS LIST .............................. back cover

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