TROUBLESHOOTING GUIDE
No Power
(Power Indicator Off)
Please reinsert and
make sure the AC of
90-264v is normal
YES
Measure C423 (+)
=1.8V
U404 PIN2=3.3V
YES
Check X401 oscillate
waveforms are normal
YES
Replace U401
1. NO POWER
NO
NO
NO
- 18 -
Check the Adapter/Inverter
section
Check CN404 or replace
Q409, Q410, and U404
Replace X401