Samsung SM-G973F Service Manual page 96

8. Level 3 Repair
8-4-38. GSM 850/900 TX
NORMAL CONDITION
Catch the channel?
Check RFS1000
about ≥ 23dBm?
Check C1005 ≥ 23dBm
Check F1000 ≥ 23dBm
Check component
soldering status ok?
PAM1000
Check component
soldering status ok?
L1062
Check component soldering
status L1064, 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, L1008
No
Resolder or change
PAM1000
Resolder or change
L1062, C1088, PAM1001
No
Resolder or change
L1064, C1086, L1063, U3000
No
Resolder or change
UCP5000