Sony SLV-D983P Service Manual page 109

CASSETTE LOADING
MECHANISM
(VCR Section)
DOES NOT OPERATE
TURN THE VCR
POWER ON AND
INSERT A TAPE
NO
TAPE DETECTED
YES
PRESS EJECT BUTTON
YES
IC601-38 : LOW(0V)
IC601-39 : HIGH(5V)
NO
CHANGE IC601
NO
CST IN MODE
IC601-75:HIGH(5V)
YES
NO
CN604 8pin 12V?
YES
YES
IC601-38 : HIGH(5V)
IC601-39 : LOW(0V)
NO
CHECK
CASSETT LOADING
MECHANISM
7-9
CHECK
SW604, IC601
CHECK
DM B + LINE
CHANGE IC601