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4. TROUBLE SHOOTING
CHECKING FLOW
START
Check of ear_jack condition
A condition is good?
YES
Check condition of
matching components
(TP2)
A condition is good?
YES
Check Bias Voltage
TP3, TP4
YES
LGE Internal Use Only
NO
Replace TP1
Give the additory
NO
solder in
TP2
NO
Replace
U102
FM_radio will
work properly
101/140
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4. TROUBLE SHOOTING
START
Check of earless condition
Check condition of
intenna
A condition is good?
YES
Check Bias Voltage
TP3, TP4
A condition is good?
YES
Check F Input & output
signal at I2C(TP6)
A condition is good?
YES
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Replace
NO
Battery Cover
NO
Replace U102
NO
Replace U102
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