7-15
24 pin in CN2
of Jack PCB has
normal level?
Check the RCA cable
No
Check digital main PCB
Analog signals are
inputed normally
VIC1
No
No
No
Check the connection between
CN2 and VIC1
Power is
normal at VIC1-1,24, 34?
(jack PCB)
Pin5,12 in VIC1 is
in LOW state?
Check the connection between
VIC1-1 and power
Check the connection with
VCR Micom.
check VIC1 peripheral circuit
Yes
No
Doos
the video signals is 1V level at
output jack?
Check the connection between
VIC1 and output jack
CVBS output error
Yes
Yes
Yes
Yes
Yes
Check select signal of
pin44, 46, 56, 58 in IC801
(jack board)
Check pin56 of IC801,pin17
of CN1 in jack board
Check passive components
around jack-pin and IC801
check pin63, 64 (input select)of IC801
No
No
Check SMPS board
Check all the vcc of
IC501, IC502
(main board)
No
Replace main PCB
Yes
Yes
Yes
No audio on line input mode or
recorded disc playback
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
