Huawei Ascend - Usb

Y210 Mobile Phone
Maintenance Manual
9 Principles and Failure Analysis
Issue 1.0 (2012-11-28)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
43
9.4.3 USB
Figure 9-15 USB circuit
Troubleshooting USB Connection Failure
Figure 9-16 USB connection failure
USB connection failure
Re-install the
phone's firmware.
Is the problem
solved?
End
Is the 5-pin mini USB
connector poorly soldered?
Return the phone
to the factory
Re-solder the USB
connector
Y
N
Y
Use a normal USB
cable. Is the problem
solved?
End
Y
N
N