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LGE Internal Use Only
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Only for training and service purposes
4. TROUBLE SHOOTING
CHECKING FLOW
A condition is good?
START
Check of ear_jack condition
NO
YES
FM_radio will
work properly
Check condition of
matching components
(L501,C501,VA501)
A condition is good?
NO
YES
Give the additory
solder in
(L501,C501,VA501)
Replace J501
Check Bias Voltage
VDD_FMR(C225)
YES
NO
Replace
U201
YES
Check Bias Voltage FM LNA
(LNA_EN_L203)
YES
NO
Replace Q202
A condition is good?
L501(TP1), C501(TP), VA501(TP3)
(TP1~3)