Hitachi DV-RF7U Service Manual page 29

AUDIO MISSING IN
EE MODE
(VCR Section)
VCR STOP MODE
L1/L2
INPUT CHOICE
MODE
TUNER
NO
IC501-57
AUDIO SIGNAL
CHECK TM401
INPUT
YES
NO
CHECK
CHECK CLK, DATA
IC601
IC501-37, 38
YES
NO
IC501-78, 80
AUDIO SIGNAL
YES
CHECK
NO
IC801-42, 54
C543, C544,
AUDIO SIGNAL
R516, R517
YES
CHECK
IC801
(VCR Section) VCR Main PCB, Jack PCB
(5xx, 6xx) (4xx, 8xx)
IC801-44, 46, CHECK
NO
56, 58 Audio C819, C820,
signal input
C825, C826
YES
NO
CHECK
IC501-51
Q303
3.58MHz
YES
CHANGE
IC501
AUDIO MISSING IN
(VCR Section)
VCR Main PCB
RECORD MODE
CHECK
AUDIO MISSING
IN EE MODE
MONO
MISSING AUDIO
MONO
HIFI
NO
IC501-9, 71
CHECK
AUDIO SIGNAL
R523, R524, R525, R511
YES
NO
IC501-37, 38
CHECK
CLK, DATA
R509, R510
YES
NO
IC501-78, 80
CHANGE
AUDIO SIGNAL
IC501
YES
NO
IC501-26
CHECK C511, R506
AUDIO FM
CHANGE IC501
YES
CHECK CYLINDER