A SERVICE OF

logo

30
Troubleshooting
This chapter provides troubleshooting information for the B203W:
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
Reinsert or check the
power section
Check if X401 oscillate
waveforms are normal
Measure U701 Pin2=3.3V,
OK
OK
NG
NG
NG
Measure CN701
Replace U401
Re
p
lace X401
NG
Replace U701
OK
OK