EDGE U0-6 Simplified Maintenance Manual
10 Troubleshooting
Issue 1.0 (2013-01-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
56
Figure 10-7
Troubleshooting weak current power-on failures
Weak
current
power-on
failure
Is the issue
addressed after
the phone software is
forcibly
upgraded?
End
Replace the PCBA
Y
N
Troubleshooting process for excessive current power-on failures: Replace the PCBA
directly.
10.2 Restarts and Screen Freezing
Symptom
After you press and hold the power key, the phone repeatedly restarts and cannot display
the Home screen.
After you press and hold the power key, the phone freezes at the Huawei logo screen and
cannot display the Home screen.
Solution
Check the power-on current of the phone. If the current is between 80–350 mA, forcibly
upgrade the phone. If the current exceeds 500 mA, replace the PCBA.