Sony WM-10 Troubleshooting Manual

TROUBLESHOOTING GUIDE
WM-10
m m u m STEREO CASSETTE PLAYER
US
,
Canadian Mode!
WM-20
_I_
AEP, UK
, £
Model
Sony Corporation
TABLE OF CONTENTS
Description
Page
General precautions for repair....
.1
No operation ) ^
Noise when battery is. worn out (less than 0.9V)
) '
.
No power
LED does not light up
No converter operation
Converter board simple check method
Motor does not stop for FF/REW STOP...6
No muting
No sound (FWD, but no sound)
Low level
No Dolby
Hum noise during playback
Noise on L CH
No motor rotation
Motor coil check method
Fast1 slow speed
No speed acceleration
Servo board (A) (fl) simple check method
Defective tape transport I., . .13, 14
Defective tape transport If ....15, 16
Repair know how ..... .1 7
.4. 5
. . .7,
$
.
9-12
This book is for quick and easy repairing.
File with the sendee manual.