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Chapter 3 Troubleshooting - Acer AL1951 Service Manual

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Troubleshooting
This chapter provides troubleshooting information for the AL1951:
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 U702 PIN2=5V?
NG
OK
X402 oscillate waveform
is normal
NG
OK
Replace U402
NG
Replace U401
Check the adapter
section
Replace U702
Replace X402
32
Chapter 3
NG

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