Acer B193R Service-Handbuch - Seite 30

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Troubleshooting
This chapter provides troubleshooting information for the B193R:
1. No Power
Replace X201
No power
Press power key and look if the
picture is normal
NG
Please reinsert and make sure the
AC of 100-240 is normal
OK
Measure
U301
Pin2=3.3V,
Pin2=1.8V
OK
Check if X201 oscillate
waveforms are normal
NG
OK
Replace U203
NG
U304
NG
30
Reinsert or check the
power section
Measure CN301
OK
Replace U301,U302
Chapter 4