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8. Level 3 Repair
8-4-38. WCDMA B4, LTE B4,66 Tx
LTE B3
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 L1029
about 28dBm
YES
Re-solder or change PAM1000
NO
Check the L1070
about 0dBm
Re-solder or change L1070
NO