Gsm Dcs/Pcs, Wcdma B1/2/4, Lte B1/2/3/4/66 Prx - Samsung SM-A505F Service Manual

8. Level 3 Repair

8-4-23. GSM DCS/PCS, WCDMA B1/2/4, LTE B1/2/3/4/66 PRx

It is not catching the channel
Check ant path any damage
(ANT9002 ~ ANT9000)
Check RX path any damage
(Crack, open, etc), is it ok?
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In normal condition
YES
Is it ok? (SUB PBA)
YES
(RFS1000~U1003)
Is it ok?
YES
Check U1003, U7066
any damage
YES
Change the board
YES
END
NO
Resolder or change
Antenna path components
NO
Resolder or change
RX path components
NO
Resolder or change
U1003, U7066