AOC E941SERIES, E941VA, E941SA service manual Check flow chart, For the no signal

Service Manual AOCe941series

No picture (LED orange)

No picture	Check flow chart
	for the no signal
Check signal wire
NG	Replace signal wire
OK
Check U404 Vout=3.3V;
Q409-out=1.8V
NG	replaceU404,Q409,Q410,Q405
OK
	&around device
check X401 waveform
NG	replace X401
OK
Check CN101-RGB/HS/VS
NG	Check Correspondent
OK	component
Check U402/U403 out
NG	Updata soft data
OK
Replace U401
Whitescreen

White screen			Check flow chart
			For the white screen
Measure Q404-base	NG	Check X401 waveform
is low level?				NG
OK		OK		Replace X401
Check Q405=5V
		Check U403/U402
Or CN403 solder?
NG			NG	Check around
	Check around
				device
OK	device	OK
Check connector		Updata soft
Replace Panel		Replace U402/U403/U401
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