Table of Contents
Advertisement
U8185
Maintenance Manual
Issue 1.0 (2012-03-23)
No W900/850
reception
Upgrade the
software. Problem
solved?
N N
Is the antenna in
good contact?
Y Y
Is U3404 soldered
properly?
Y Y
Are C3611, C3612,
and L3612 soldered
properly?
Y Y
Send the phone to an
advanced service site
for repair
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Y Y
End
Re-install the
N N
antenna
Re-solder or replace it
N N
Re-solder or replace
N N
them
9 Principles and Failure Analysis
47
Advertisement
Table of Contents
