Samsung SM-A920F Service Manual page 114

8. Level 3 Repair
8-4-39. GSM 1800/1900 Tx
Check component soldering status OK at
Check component soldering status OK at
Check component soldering status OK at
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Check L1059
: About 0dBm ?
YES
U1004 ?
YES
Check L1046
: About 30dBm ?
YES
F1000 ?
YES
Check L1038
: About 33dBm ?
YES
F1007 ?
YES
Check C1096
: About 33dBm ?
YES
Check RFS1001
: About 33dBm ?
YES
ANT is O.K?
YES
END
NO
Resolder or change
U2029 or C1092 or L1059
NO
Resolder or change
U1004
NO
Resolder or change
L1046
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