Technical information

33
Troubleshooting
This chapter provides troubleshooting information for the E191W:
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
AC of 100-240 is normal
Measure U404 PIN2=3.3V,
Reinsert or check the
power section
X401 oscillate waveforms are
normal
Check CN401, U404
OK
OK
NG
NG
NG
Replace U401
Replace X401
OK
NG