Samsung SM-A920F Service Manual page 116

8. Level 3 Repair
8-4-41. WCDMA B5/8, LTE B5/8/12/13/17/20/26/28 Tx
: About 0dBm ?
Check component soldering status OK at
CheckC1040 or L1070 orL1063 or C1105
or L1004 or C1114 : 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 L1052
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 L1052 or C1080
NO
Resolder or change
U1004
Resolder or change
NO
C1040 or L1070 or L1071 or L1063 or
L1064 or C1105 or L1066 or C1106 ro
L1004 or L1005 or C1012 or C1114 or
U8065 or C1116
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