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2. No Picture
Measure U701 PIN2=12V
U702 PIN2=3.3V, U705 PIN2=3.3
Check if X401, X402 oscillate
waveforms are normal
Check if the sync signal from
computer is output and video cable
is connected normally
No picture
OK
NG
NG
OK
NG
OK
Replace U401
Replace U701, U702, U705
Replace X401, X402
Input the sync signal of computer, or
change the cable
36
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