Samsung SM-G973F Service Manual page 97

8. Level 3 Repair
8-4-39. GSM 1800/1900 TX
NORMAL CONDITION
Catch the channel?
Check RFS1000
about ≥ 23dBm?
Check C1005 ≥ 23dBm
Check L1037 ≥ 23dBm
Check component
soldering status ok?
U1006
Check component
soldering status ok?
L1060
Check component soldering
status L1061, U3000
Receiver is OK?
END
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No
No
No
No
Yes
Yes
Yes
Yes
Yes
Check the ANT1001
Yes
Resolder or change
RFS1000, C1005, C1004, L1001
Yes
Resolder or change
F1000, L1037, C1055
No
Resolder or change
U1006
Resolder or change
L1060, C1084, PAM1001
No
Resolder or change
L1061, C1087, C1085, U3000
No
Resolder or change
UCP5000