LG GB220 - Page 105

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Only for training and service purposes
4. TROUBLE SHOOTING
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
A condition is good?
START
Check of ear_jack condition
NO
YES
CHECKING FLOW
FM_radio will
work properly
Check condition of
matching components
( C300)
A condition is good?
NO
YES
Give the additory
solder in
C300
Replace CN300
Check Bias Voltage
VDD_FMR
YES
NO
Replace
U101