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8. Level 3 Repair
8-4-46. LTE B40 Tx
LTE B7
Transmitter is O.K?
NO
Re-solder or change U2011
END
YES
YES
NORMAL CONDITION
Catch the channel
Check the CPL1000
PIN1
about 22dBm?
NO
Check soldered
C1142, C1136, C1138, RFS1001, C1156, L1023
YES
Check the Voltage
C1145 =2.8V
C1000 =1.8V
NO
NO
Re-solder or change U5011
YES
Check the L1037
about 28dBm
YES
Re-solder or change FEM1000
NO
Check the C1039
about 0dBm
Re-solder or change C1038, C1039
NO