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8. Level 3 Repair
8-4-21. GSM 850/900, WCDMA B5/8, LTE B5/8/20/28 PRx
END
Check ant path any damage
(ANT9004 ~ ANT9000)
Is it ok? (SUB PBA)
)
Check RX path any damage
(RFS1000~U1000)
Is it ok?
Check U1000, U2004
any damage
(Crack, open, etc), is it ok?
i
Change the board
Resolder or change
Antenna path components
Resolder or change
RX path components
Resolder or change
U1000, U2004
NO
NO
NO
YES
YES
YES
YES
YES
It is not catching the channel
In normal condition