Samsung SM-G780F Common Service Manual page 105

8. Level 3 Repair
8-4-43. LTE B20 TX
NORMAL CONDITION
Catch the channel?
Check L1018 ≥-5 dBm
Check PAM1000
soldering status ok?
Check C1044 ≥22 dBm
Check component
soldering status ok?
U1000
Check L1011 ≥22 dBm
Check component soldering
status OK at F1000 ?
Check L1008 ≥22 dBm
Check component
soldering status OK at
RFS1000, Coaxial Cable ?
END
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No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Check U2001 or
Resolder L1018, L1007
No
Resolder or change
PAM1000
No
Resolder or change
L1024, C1044, L1022
No
Resolder or change
U1000
No
Resolder or change
L1011
No
Resolder or change
F1000
No
Resolder or change
C1020, L1008, C1057
No
Resolder or change
RFS1000, Coaxial Cable,