Huawei u8800 - Gps Failure

U8800 Maintenance Manual Basic Version V1.1 Internal
2011-03-21
Huawei confidential. No spreading without permission. Page 49 of 61
9.14 GPS Failure
Reference Figure 9-9
GPS failure
Check whether the GPS
antenna is normal?
Y
Replace the antenna
N
Replace Z4101&Z4102,
check whether it is normal?
N
Replace U4101,
check whether it is normal?
End
Y
N
End
Y
Measure U3701 whether it is
normal?
Y
Replace the U201
Replace the U3701
N
Figure9-9
U4101
&Z4101
GPS module
match circuit
/
U1401
Semiconductor
Sensor
/
U1401
VDD-test
C1404
2.7V