Charge Failure - Huawei E5331 Maintenance Manual
Maintenance manual basic version
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9.3 Charge Failure
Reference Figure 9-3
2012-4-21
E5331 Maintenance Manual Basic Version V1.0
Charge Failure
Insert charger
Measure if the voltage
of VBUS is 5V?
Y
Measure if the voltage
of VBAT is 3.4-4.2V?
Y
Replace the U3101
U3101
U3801
Huawei confidential. No spreading without permission.
N
N
J3701
9-3
Figure
Replace the
J3701
Replace the
U3801
J3702
J3801
Internal
Page 36 of 57
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