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8. Level 3 Repair
8-4-32. LTE B40 Rx
End
NORMAL CONDITION
Catch the channel?
C1156
≤ -65dBm ?
C1145 = 2.8V?
L1037
≥ -65dBm ?
Check soldered
C1142, C1136, C1138, RFS1001
Re-solder or change U5011
Yes
Ab
No
Re-solder or change
CPL1000, F1011, F1004, FEM1000
No
Ab
Yes
No
Ab
No
Yes
Check the voltage at
C2046,C2044 = 1.2V
C2056,C2058 = 1.8V
Yes
LTE B38
Receiver is O.K?
Yes
No
Ab
Re-solder or change U5011
No
Ab
Re-solder or change U2011