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8. Level 3 Repair
8-4-24. GSM900, WCDMA B8,LTE B8 Rx
NORMAL CONDITION
Catch the channel?
C1156
≤ -65dBm ?
C1145 = 2.8V?
L1057
≥ -65dBm ?
Check soldered
C1142, C1136, C1138, RFS1001
Re-solder or change U5011
Yes
Ab
No
Re-solder or change CPL1000, F1011, U1006
No
Ab
Yes
No
Ab
No
Yes
Check the voltage at
C2046,C2044 = 1.2V
C2056,C2058 = 1.8V
Yes
GSM900, WCDMA B8,LTE
B8 Receiver is O.K?
Yes
End
No
Ab
Re-solder or change U5011
No
Ab
Re-solder or change U2011