Acer B223W - Bdmr - 22" LCD Monitor Service Manual - Page 30
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Also for Acer B223W - Bdmr - 22" LCD Monitor: Brochure & Specs (5 pages), User Manual (30 pages), Quick Start Manual (2 pages), User Manual (30 pages), User Manual (30 pages), Service Manual (48 pages)
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Troubleshooting
This chapter provides troubleshooting information for the B223W:
1. No Power
Replace X401
No power
Press power key and look if the
picture is normal
NG
Please reinsert and make sure the
AC of 100-240 is normal
OK
Measure U701 Pin2=3.3V,
NG
OK
Check if X401 oscillate
waveforms are normal
NG
OK
Replace U401
NG
Reinsert or check the
power section
Measure CN701
OK
Replace U701
30
Chapter 4