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9.14 RF Failure
9.14.1 RF Receiving Failure-WCDMA 2100MHz&900MHz
Reference Figure 9-11
2011-05-28
U8510-1 Maintenance Manual Basic Version V1.0
RF 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 J3204 are connection？
Y
Replace U3202&U3702,
measure whether it is
normal？
N
Replace U3304&U3404,
measure whether it is
normal？
N
measure whether the U3801
is normal？
Y
Replace the U401
Huawei confidential. No spreading without permission.
End
Y
Replace the
N
U201
Replace the
N
J3204
Y
End
End
Y
Replace the
N
U3801
Internal
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