Sony RMT-V501D - VCR Fast Forward Issues

7-4
LOAD TAPE AND
PRESS F.FWD BUTTON
FAST FORWARD
DOESN'T OPERATE
F.FWD
INDICATOR IN
THE DISPLAY
PRESS FF
KEY IN REMOTE
CONTROL
CHECK CN604
2pin 15V?
4pin 5V?
5.9pin 3.2V?
CHECK TIMER
CHANGE IC601, XT601
NO
NO
NO
NO
YES
CHECK CN604
5.9pin 3.2V
CHECK IC601
CHECK POWER BLOCK
YES
YES
YES
CHECK
MECHANISM
NO
IC601 68pin
FG pulse
CHECK CAPSTAN MOTOR
YES
(VCR Section)
FWD SEARCH DOESN'T
OPERATE
PLAY
OPERATION
PRESS F.FWD FOR
FORWARD SEARCH
CHECK IC601
CHECK CAPSTAN
MOTOR
IS CAPSTAN
SPEED CHANGED?
SEARCH
OPERATION
NOISE BAR
LOCKING
END
ADJUST
A/CE HEAD
CHANGE DECK
CHANGE IC601
SEE
(PLAY DOESN'T OPERATE)
NO
NO
NO
YES
NO
(CONTROL PULSE)
IC601-76
NO
YES
YES
YES
YES
(VCR Section)