Sansui 881 Service Manual

Page 2

This service manual is designed for service engineers to repair,

adjust, maintain and order the replacement parts of the 881 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

5.2

Perl

SPECIFICATIONS ................................................
BLOCK DIAGRAM AND VALUE OF EACH LEVEL...
ALIGNMENTS AND ADJUSTMENTS ...............
3-1. Driver Circuit Board Adjustment ...............
3-2. FM IF Alignment ............

'5th

3-3. FM Dial Calibration, MONO istortion and RF Alignment ...... 5, 6
3-4. MPX Alignment ............................................. 6
3-5. AM IF, Dial Calibration, RF Alignment ........... . 7
TROUBLESHOOTING CHART ..................... .... 9
4-1. Troubleshooting on Power Supply Section ............. 9
4-2. Troubleshooting on Audio Section ............. 9
4~3. Troubleshooting on Tuner Section ...... ,. 9, 10
PARTS LOCATIONS AND PARTS LISTS. . . .............. 11
5-1. F1507 Tuner Circuit Board ............................ 11, 12, 13
5-2. F-1519C FM Pack .............................................. 14
5-3, F-2433 Equalizer Circuit Board ................... 15
5-4 F-2432 Input Terminal Board ..................... 15
5-5. F-2434 Tone Control Circuit Board ............... 15. 16
5-6. F-2435 Filter Circuit Board ........................... 16
5-7. F-2436 Driver Circuit Board ........................... 17
5-8. F-2473 Power Supply Circuit Board ............... 18
5-9. Other Parts (Front Side) ................. t . t .19 20
5-10. Other Parts (Top Side) ........................... 21
5-11i Other Parts (Bottom Side) t. .................. 21
THREADING 0F DIAL CORD .. ...................... 21
6-1 Threading of Dial Cord ... .................... 21
6-2 Attachment of Dial Pointer .. .......... 21
SCHEMATIC DIAGRAM .................. .22
PACKING LIST .................................. .23
ACCESSORY PARTS LIST ......... . ................... 23