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9.13 GPS Failure
Reference Figure 9-10
2011-05-28
U8510-1 Maintenance Manual Basic Version V1.0
GPS Failure
Check whether
the antenna is normal?
Y
Replace Z4002&
Z4001, check whether the
function is normal?
N
Measure whether the U4001 is
normal?
Y
Measure whether the U3801 is
normal?
Y
Replace the U401
Huawei confidential. No spreading without permission.
Replace the
N
antenna
Y
End
Replace the
N
U4001
Replace the
N
U3801
Internal
Page 49 of 61
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