Samsung SM-G973F Service Manual page 89

8. Level 3 Repair
8-4-31. GSM1800/1900, WCDMA 1/2/4, LTE B1/2/3/4/7/25/32/66 DRX
NORMAL CONDITION
Catch the channel?
Check U12029 ≤ -65dBm ?
Check L2018 ≤ -65dBm ?
Check component
soldering status ok?
Check C2020 ≤ -65dBm ?
Check component soldering status OK at
Check C2028, L2028 ≤ -65dBm ?
Check component
soldering status U3000
Receiver is O.K?
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No
Yes
Yes
F2000
Yes
Yes
FEM2001
Yes
Yes
Yes
Yes
END
No
Resolder or change
U12029, ANT5001, ANT5007, V5007
No
Resolder or change
L2018, L2020, C2021, L2019
No
Resolder or change
No
Resolder or change
C2017, C2015, L2017, C2020
No
Resolder or change
FEM2001
No
Resolder or change
C2027, C2028, L2027, C2030,
L2033, L2028
NO
Resolder or change
U3000
NO
Resolder or change
UCP5000
F2000