Gsm 1800 / Gsm 1900 Tx - Samsung SM-A510FD Service Manual

8. Level 3 Repair

8-4-23. GSM 1800 / GSM 1900 TX

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 Tx path
C1125, C1123, L1034,
L1035, C1017
Is it ok?
Check F1004,U2002, U1006
any damage
(Crack, open, etc)
Change the board
END
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Yes
No
No
Yes
Yes
No
Re-solder or change
Antenna path components
http://www.easy-firmware.com
Re-solder or change
Rx path components
Re-solder or change
F1004, U2002, U1006 components