Samsung SM-A920F Service Manual page 115

8. Level 3 Repair
8-4-40. WCDMA B1/2/4, LTE B1/2/3/4/66 Tx
: About 0dBm ?
Check component soldering status OK at
Check C1077 or L1058 or L1041 or L1056
: About 23dBm ?
Check component soldering status OK at
: About 33dBm ?
Check component soldering status OK at
: About 33dBm ?
Check RFS1001
: About 33dBm ?
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Check L1048
YES
U1004 ?
YES
YES
F1000 ?
YES
Check L1038
YES
F1007 ?
YES
Check C1096
YES
YES
ANT is O.K?
YES
END
NO
Resolder or change
U2029 or L1048 or C1059
NO
Resolder or change
U1004
Resolder or change
NO
C1077 or L1053 or L1058 or C1093
or C1094 or L1056 or C1090 or
C1089 or C1041 or C1047 or
C1078
NO
Resolder or change
F1000
NO
Resolder or change
L1038
NO
Resolder or change
F1007
NO
Resolder or change
C1095 or C1096 or C1098
NO
Resolder or change
RFS1001
NO
Change
Coaxial cable or SUB PBA or
mechanical material