Sansui SC 3000 Service Manual

Page 1

SERVICE MANUAL

STEREO CASSETTE TAPE DECK

8All8lll 80-2000
80-2002
80-3000
80-3003

Page 2

This service manual is designed for service engineers to repair, adjust,
maintain and order the replacement parts of the 502000, SC-2002,
SC-3000, SC-3003 correctly.

When ordering the parts, use the stock number and parts name speci-
fically referring to the Parts Location and 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
1. SPECIFICATIONS .................................................. 2
2. BLOCK DIAGRAM. ................. 2

3. ADJUSTMENTS ........................................
3-1. Tape Speed Adjustment ,,,,,,,,
3-2, Playback Adjustment ...........
3-3. Recording Adjustment ........

4. TROUBLESHOOTING CHART .........

5. PARTS LOCATIONS AND PARTS LIST
S-T (3-1197 Main Circuit Board ..........
5-2. (3-1198 Power Circuit Board .,

5-3, (1-1199 Shut-off Circuit Board ...........................
5-4. (3-1200 LED. Circuit Board ............................. 9
5-5. 6-1201 Switch Circuit Board ........................... 9
5-6. (3-1211 LED» Circuit Board ...................................... 9
5-7. 6-1212 Switch Circuit Board .................................... 9
5-8. Figures ........................................................ 9
6. DISASSEMBLY WITH EXPLODED VIEWS AND PARTS LIST ...... 10
6-1. Hardware Nomenclature ...................................... 10
6-2. Disassembly of the Chassis Section .................. .. 11, 12
6-3. Disassembly of the Mechanism Assy ........................ 13, 14

<> Faking List .......................
OAccessory Parts List .................

7. OPERATION OF MECHANISM .............
7-1. Driving Mechanism .....................
7-2, Forward Mode .......................

7-3. REC Mode .. ........................
7-4. Fast Forward and Rewind Operation .
7-5. Pause Mode .......................

8. SCHEMATIC DIAGRAM ..........................................
8-1. 502000, SC-2002 Schematic Diagram ............................ 17
8-2. SC-3000, SC-3003 Schematic Diagram . 18

9. REPLACEMENT OF MAIN PARTS ..... 19
9-1. Replacement of Mechanism Assy ..... 19

9-2, Replacement of Cassette Assy ................................. 19
9~3. Rep|acement of Cassette well and Cassette lid .................... 19