eMachines E181H Service Guide - Page 33

Troubleshooting

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Troubleshooting This chapter provides troubleshooting information for the E191W: 1. No Power Chapter 4 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 NG OK Reinsert or check the power section Measure U404 PIN2=3.3V, NG OK X401 oscillate waveforms are normal Check CN401, U404 NG OK Replace U401 Replace X401 33

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33
Troubleshooting
This chapter provides troubleshooting information for the E191W:
1. No Power
Chapter 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
Measure U404 PIN2=3.3V,
Reinsert or check the
power section
X401 oscillate waveforms are
normal
Check
CN401, U404
OK
OK
NG
NG
NG
Replace U401
Replace X401
OK
NG