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8.2 Trouble Shooting
8.2.1 Main Board
No power
Please reinsert and make sure
the AC of 100-240 is normal
All manuals and user guides at all-guides.com
No power
Press power key and look
if the picture is normal
NG
OK
Measure U201 PIN2=1.8V
U202 PIN2=3.3V
NG
OK
X601 and X401 oscillate
waveforms are normal
NG
OK
Replace U601
NG
Replace U401
Reinsert or check the
NG
Adapter/Inverter
section
Check CN201 or replace
U201, U202
Replace X601, X401
35
ASUS MM19T
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