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Troubleshooting
This chapter provides troubleshooting information for the E191W:
1. No Power
Press power key and look if the
picture is normal
Please reinsert and make sure the
AC of 100-240 is normal
Measure U404 PIN2=3.3V,
X401 oscillate waveforms are
normal
No power
NG
NG
OK
NG
OK
NG
OK
Replace U401
Reinsert or check the
power section
Check CN401, U404
Replace X401
33
Chapter 4
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