Samsung SM-A526B Service Manual page 57

8. Level 3 Repair
8-4-29.
N78 DRX
It is not catching the channel
Check ant path any damage
(RFS1002, ANT1006 ~ ANT1009)
Check DRX path any damage
Check U1009 or U2012 path any damage
(Crack, open, etc), is it ok?
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In normal condition
YES
Is it ok? (SUB PBA)
)
YES
(RFC1001~U1009)
Is it ok?
YES
YES
Change the board
YES
END
NO
Resolder or change
Antenna path components
NO
Resolder or change
DRX path components
NO Resolder or change
U1009 or U2012 DRX path
components