Huawei Ascend Maintenance Manual

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.
28
Troubleshooting Process
To troubleshoot the power-on failure, check whether the I/O connector (battery connector) is
damaged. If the I/O connector (battery connector) is not damaged, use a DC regulated power
supply to supply power to the phone, and test the phone's current.
The power-on failure may be caused by any of the following conditions:

No current
Figure 9-2 No current
Replace J902
N
Power-on failure:
no current
Is the battery
connector J902
normal?
Replace Q201
N
Is Q201 normal?
Y
Re-solder or replace
U201
Y

Weak current

Huawei Ascend Specifications

General

Brand	Huawei
Model	Ascend
Category	Cell Phone
Language	English