Samsung SM-G780F Common Service Manual page 100

8. Level 3 Repair
8-4-38. WCDMA B4, LTE B4/66 TX
NORMAL CONDITION
Catch the channel?
Check L1031 ≥-5 dBm
Check PAM1000
soldering status ok?
Check L1003 ≥22 dBm
Check component
soldering status ok?
U1000
Check L1005 ≥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 C1031, L1013
No
Resolder or change
PAM1000
No
Resolder or change
L1006, L1003, C1009
No
Resolder or change
U1000
No
Resolder or change
L1005
No
Resolder or change
F1000
No
Resolder or change
C1020, L1008, C1057
No
Resolder or change
RFS1000, Coaxial Cable,