Sony SLV-D983P Service Manual page 107

FAST FORWARD
(VCR Section)
DOESN'T OPERATE
LOAD TAPE AND
PRESS F.FWD BUTTON
F.FWD
NO
INDICATOR IN
THE DISPLAY
YES
STOP
MECHANISM
STATE IC601-76, 77, 78
F.FWD
NO
CAPSTAN MOTOR
ROTATION
ROTATE
CHECK
MECHANISM
NO
PRESS FF
KEY IN REMOTE
CONTROL
YES
CHECK TIMER
SEE MECHANISM DOES NOT
OPERATE IN PLAY MODE
SEE CAPSTAN DOES NOT
ROTATE
7-7
CHANGE IC601, XT602