4. TROUBLE SHOOTING
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START
Check of ear jack condition
A condition is good?
Replace J501
No
Yes
FM_radio will
work properly
A condition is good?
Yes
Give the additory
solder in (L501,C50,VA501: TP1,,3)
No
Check condition of matching
components(L501,C50,VA501: TP1,,3)
Yes
Yes
A condition is good?
Replace Q0
No
Yes
Check Bias Voltage
VDD_FMR(C4)
Replace U01
No
Check Bias Voltage FM LNA
(LNA_EN_L0 : TP 04)