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Troubleshooting
This chapter provides troubleshooting information for the AL1722:
1. No power
All manuals and user guides at all-guides.com
No power
Press power key and look
if the picture is normal
NG
Measure 12V input voltage
NG
OK
Measure U101 PIN2=5V?
NG
OK
Y601 oscillate waveform
is normal
NG
OK
Replace U601
NG
Replace U401
Check the adapter
section
Replace U101
Replace Y601
39
Chapter 4
NG
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