Gsm 850/900, Wcdma B5/8, Lte B5/8/12/13/17/20/28 Drx - Samsung SM-A505F Service Manual

8. Level 3 Repair

8-4-24. GSM 850/900, WCDMA B5/8, LTE B5/8/12/13/17/20/28 DRx

It is not catching the channel
Check ant path any damage
Check RX path any damage
(Crack, open, etc), is it ok?
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung's written authorization is strictly prohibited.
In normal condition
YES
(U7038~U1000)
Is it ok?
YES
(U1000~U7071)
Is it ok?
YES
Check U7071, 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
U7071, U7066