Huawei E5331 - Page 39

E5331 Maintenance Manual Basic Version V1.0
Internal
2012-4-21
Huawei confidential. No spreading without permission.
Page 39 of 57
Data Communication
Failure
Replace the U3101
Check whether J3701 is normal？
Y
Replace the
J3701
N
Measure whether the
RV3703/RV3704/C3720
/C3721/C3705/C3706/L3701/L37
02 are normal?
Replace the
faulty
components
N
Y
J3701
Figure 9-5
L3701
Inductor
15nH
L3702
Inductor
15nH
RV3704
Varistor
/
RV3703
Varistor
/
C3705
Capacitor
1.8pF
C3706
Capacitor
1.8pF
C3720
Capacitor
6.8pF
C3721
Capacitor
6.8pF