EDGE U0-6 Simplified Maintenance Manual
10 Troubleshooting
Issue 1.0 (2013-01-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
58
10.4 Charging Failure
Symptom
The phone fails to be charged using the USB cable.
Solution
Charging failures commonly include two types:
There is no charging icon on the screen.
There is the charging icon on the screen.
Without charging icon: Check whether the USB connector is in good condition. If not, replace
the USB cable. If yes, replace the PCBA.
With charging icon: Test whether the BSI's ground impedance is 10 kohms and whether the
voltage between the battery's positive and negative terminals is 0 V. If the voltage is 0 V while
the impedance is much larger or smaller than 10 kohms, the battery is faulty. Replace the
battery and check whether the phone can be properly charged. If the problem persists, replace
the PCBA.
Troubleshooting Process
Figure 10-9
Troubleshooting charging failures
Charging
failure
Is the USB port
smudged, poorly soldered,
or damaged?
Replace the USB
port FPC
Is the issue addressed
after you replace
the battery?
Replace the PCBA
N
Y
N
Y
Replace the PCBA
