Aiwa HV-FX4100k Service Manual page 34

WHEN IN PLAYBACK, FAST
FORWARD OR REWIND MODE
IS ACTIVATED, UNIT STOPS
IMMEDIATELY
Does CAPSTAN DD
MOTOR rotate ?
Yes
Does the REEL SENSOR
PULSE signal appear
at pins 79 and 80 IC1002 ?
Yes
Replace IC1002.
TROUBLESHOOTING GUIDE
No
No
E-11
Refer to section "CAPSTAN
DD MOTOR NOT ROTATING".
Check Q1001 and Q1002.