Samsung SM-A510FD Service Manual page 74

8. Level 3 Repair
8-4-17. GSM1800 / LTE B3 Rx
It is not catching the channel
in normal condition
Check ANT PATH
any damage
(RFS1003, C1178, L1063,
ANT2000, ANT2001,
ANT2002, C2005, C2062,
C2033, L2030, C2001)
Check Rx path
C1034,L1003,C1006
Is it ok?
Check F1004,U2002
any damage
(Crack, open, etc)
Change the board
END
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Yes
No
No
Yes
Yes
No
Resolder or change
Antenna path components
Resolder or change
http://www.easy-firmware.com
Rx path components
Resolder or change
F1004, U2002 components