Hitachi DV-RF7U Service Manual page 25

CASSETTE LOADING
MECHANISM
(VCR Section)
VCR Main PCB
DOES NOT OPERATE
TURN
POWER ON AND
INSERT A TAPE
NO
CST IN MODE
TAPE DETECTED
IC601-87: HIGH(5V)
YES
PRESS EJECT BUTTON
CN604-8 12V?
IC601-59: HIGH(5V)
IC601-58: LOW(0V)
CHECK
YES
IC601-59:LOW(0V)
CASSETTE LOADING
IC601-58:HIGH(5V)
MECHANISM
NO
CHANGE IC601
NO CHECK
START SENSOR (S602)
IC601
YES
NO
CHECK
LM B + LINE
YES
YES
CHANGE IC601
NO
VIDEO MISSING IN
(VCR Section)
VCR Main PCB, Jack PCB
EE MODE
(3xx, 6xx)
PLACE VCR IN STOP MODE
LINE 2 VIDEO INPUT
IC301-53,54
NO
IC301-26
VIDEO DATA/
VIDEO OUT
CLOCK
YES
YES
CHANGE IC301
NO
IC601-50
IC601-49
SYNC IN
VIDEO IN
YES
YES
CHECK OSD PICTURE
NO
Q801-E
CHECK IC801, Q801
VIDEO OUT
YES
CHECK LINE OUT and
C832, R806, R804
(8xx)
NO
CHECK
IC601
CHECK
NO
R638, C623,
C622