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Troubleshooting
This chapter provides troubleshooting information for the B193R:
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 X201 oscillate
waveforms are normal
Measure U301 Pin2=3.3V, U304
Pin2=1.8V
OK
OK
NG
NG
NG
Measure CN301
Replace U203
Re
p
lace X201
NG
Replace U301,U302
OK
OK