Samsung SM-A920F Service Manual page 113

8. Level 3 Repair
8-4-38. GSM 850/900 Tx
: About 0dBm ?
Check component soldering status OK at
: About 33dBm ?
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 L1057
YES
U1004 ?
YES
Check L1049
YES
F1000 ?
YES
Check L1038
YES
F1007 ?
YES
Check C1096
YES
YES
ANT is O.K?
YES
END
NO
Resolder or change
U2029 or L1057
NO
Resolder or change
U1004
NO
Resolder or change
L1049
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