Acer B223W - Chapter 4 Troubleshooting

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Troubleshooting
This chapter provides troubleshooting information for the B223W:
1. No Power
Cha
p
ter 4
No power
Press power key and look if the
picture is normal
Please reinsert and make sure the
5V and 12V input is normal
Reinsert or check the
p
ower section
Check X201 oscillate waveforms
are normal
Measure U701 Pin2=3.3V and U702 PIN2=1.8V
OK
OK
NG
NG
NG
Check CN401 or
replace U701,U702
Check U202
Replace X201
OK
NG