AOC n941S/plus Service Manual page 35

Service Manual
No picture (LED orange)
Whitescreen
White screen
Measure Q404-base
is low level?
OK
Check Q405=5V
Or CN403 solder?
OK
Check connector
Replace Panel
No picture
Check signal wire
OK
Check U701 Vout=3.3V;
U704-out=1.8V
OK
check X401 waveform
OK
Check CN101-RGB/HS/VS
OK
Check U402/U403 out
OK
Replace U401
NG
NG
Check around
device
NG
Replace signal wire
NG
replaceU701,U704,&around
device
NG
replace X401
NG
Check Correspondent
component
NG
Updata soft data
Check X401 waveform
OK
Check U403/U402
OK
Updata soft
Replace U402/U403/U401
35
AOCn941Splus
Check flow chart
for the no signal
Check flow chart
For the white screen
NG
Replace X401
NG
Check around
device