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No picture (LED is orange)
Key is under control?
X401 oscillate waveforms
are normal
OK
Check if the sync signal from
computer is output and video
cable is connected normally
Replace U401
No picture
OK
NG
NG
OK
NG
Y601 oscillate waveforms
are normal
Replace X401
Input the sync signal of
computer, or change the cable
48
HP VS17 Service Manual
NG
Replace Y601
OK
Replace U601
NG
Replace U401
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