Samsung SM-G975F Service Manual page 118

8. Level 3 Repair
8-4-30. LTE B3 4Rx_PRx
Check C1062 ≥ -65dBm ?
Check component soldering status OK at
Check L1054 ≥ -65dBm ?
Check component soldering status OK at
Check L1041 ≥ -65dBm ?
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Check status OK at
coaxial cable and
mechanical material
YES
YES
F1002 ?
YES
YES
U1005 ?
YES
YES
Receiver is O.K?
YES
END
NO
Change
Coaxial cable or mechanical material
Resolder or change
NO
ANT1010 or L1053 or C1062 or
L1055 or L1056
NO
Resolder or change
F1002
NO
Resolder or change
L1054
NO
Resolder or change
U1005
NO
Resolder or change
L1041 or L1049 or C1058
NO
Resolder or change
U3000