LG GB220 - Page 103

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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 BT Ant condition
NO
YES
CHECKING FLOW
YES
BT will
work properly
Check condition of
matching components
(C419, C430)
A condition is good?
NO
YES
Give the additory solder in
C419, C430
Replace Ant403
Check Bias Voltage
VAUX at C403
1V8_VDD at C403
YES
NO
Replace
U101
CLK32K
YES
NO
Replace
U101
Check BT_CLK
NO
Replace
U101