Samsung SM-G973F Service Manual page 94

8. Level 3 Repair
8-4-36. WCDMA B1/2/4, TDSCDMA B34/39, LTE B1/2/3/4/25/66 TX
NORMAL CONDITION
Catch the channel?
Check RFS1000
about ≥ 23dBm?
Check C1005 ≥ 23dBm
Check F1000 ≥ 23dBm
Check component
soldering status ok?
U1006
Check component
soldering status ok?
C1067, C1068
Check component soldering
status 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
C1067, C1068, L1054, L1055, L1049,
L1051
No
Resolder or change
U3000
No
Resolder or change
UCP5000