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9.16.1 RF Receiving Failure-WCDMA 2100MHz
Reference Figure 9-19
2011-05-18
U8350 Maintenance Manual Basic Version V1.0
W2100 receiving
failure
Upgrade the software，
measure whether it is
normal?
N
Measure whether
the RF power supply voltage
is normal?
Y
Measure whether two pins of
the U3201 are connection？
Y
Replace U3304,
Then test whether it is
normal？
N
Replace U3202,
Then test whether it is
normal？
N
Replace U3801,
Then test whether it is
normal？
N
Replace the U401
Huawei confidential. No spreading without permission.
Y
End
Replace the
N
U201
Replace the
N
U3201
Y
End
End
Y
Y
End
Internal
Page 58 of 68
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