LG -A230 Service Manual page 104

CHECKING FLOW
Check of BT Ant condition
A condition is good?
Check condition of
matching components
C407,C421,(TP1,TP2)
A condition is good?
Check Bias Voltage
VAUX at C404(TP4)
1V8_VDD at C405(TP3)
YES
LGE Internal Use Only
START
YES
YES
CLK32K
C410(TP5)
YES
Check BT_CLK
C411(TP6)
YES
BT will
work properly
NO
Replace Ant400
NO Give the additory solder in
(C437,C445,C446)
NO
NO
NO
- 104 - Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
Replace
U101
Replace
U101
Replace
U101
Only for training and service purposes