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7-17
Pin4 in IC801
has nomal level?
(jack PCB)
Pin21 in IC801
has nomal level?
Check feed back
Check the connection between
pin4 in IC801 and L1 pin-jack
No
No
Check pin 62, 55 in IC801 of input power
No
No
Pin12 in IC1001 digital main PCB
has nomal level?
Pin45 and pin 54~62 in
IC1001 of main PCB has clock and
digital video signal
nomal level?
Check the connection between pin12
in IC1001 of digital main PCB
Check IC1001 peripheral circuit
Yes
Yes
Yes
Yes
Line1 CVBS Video Input Error
www . x ia o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
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9
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2
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8
T E L 1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
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7
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299