Hitachi DV-RF7U Service Manual page 26

VIDEO MISSING IN
(VCR Section) VCR Main PCB
RECORD MODE
NO
IC301-21
E-E mode and IC301-26
VIDEO signal out?
CHECK VIDEO signal out
YES
NO
IC301-22
CHECK C305
VIDEO signal out?
YES
IC301-14 NO
CHECK IC301-23 Power
CHECK REC FM signal?
5V
YES
NO
IC301-70
CHECK IC301-68 Power
REC FM signal in?
5V and R320
YES
IC301-73 (SP)
NO
IC301-66 (SLP) CHECK drum wafer and
VIDEO head
CHECK REC FM signal?
YES
NO DEFECT RECORD MODE
VIDEO MISSING IN
(VCR Section) VCR Main PCB, Jack PCB
PLAY MODE
(3xx, 6xx)
NO
VIDEO EE MODE SEE
VIDEO MISSING IN EE MODE
OPERATION
YES
PLACE THE VCR IN
PLAY MODE
NO
VIDEO FM
H'D SW
IC301-14
IC301-57
YES
YES
NO
CHECK
VIDEO
IC301-22 C305
YES
YES
VIDEO VIDEO
IC301-26 IC601-49, 47
NO NO
CHANGE IC301 CHECK IC601
(8xx)
NO
CHECK
IC601-23
CHECK
VIDEO HEAD
YES
YES
CHECK VIDEO
VIDEO
OUT LINE
IC801-20
NO
CHECK IC801