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8. Level 3 Repair
8-4-24. FM Radio
FM Radio is not working
Yes
No
Enable FM Radio Function in the setting.
Yes
Check FM Radio function ON
Yes
Yes
END
No
Connect the earphone into the phone.
Yes
No
Replace the Earjack FPCB
Yes
No
Replace the Sub PBA.
Yes
No
Resolder or change U4004
Resolder or change the wrong element
(open, crack, deviation, etc)
Yes
Check the Earphone Check
Check Antenna contact point
Check the Earjack FPCB work
Well.Check(crack,open,etc)
Check the Sub PBA work well.
Check C4033, C4005
No
Check AP PMIC(U7002)
(short, open, crack, etc.)
Yes
Check the voltage on
C4036=1.8V
C4037=2.8V
Check Reference Clock at
TP_FM_SLEEP_CLK.
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