Huawei E5331 - Wlan Failure

E5331 Maintenance Manual Basic Version V1.0
Internal
2012-4-21
Huawei confidential. No spreading without permission.
Page 42 of 57
9.7 WLAN Failure
Reference Figure 9-7
WLAN Failure
Check whether
WLAN antenna are normal？
Replace the
antenna
Check whether J4101&Z4101
are normal？
Replace the
faulty
components
Replace the U3101
Y
N
N
Replace U4102. Check
whether it is normal?
End
Y
Y
N
Measure whether output signal
value of the X4001 is normal?
Replace the
X4001
N
Replace U4001, check
whether it is normal?
End
Y
Y
N
Upgrade the software.
Then inspect if it is normal?
End
N
Y