LG -A230 Service Manual page 69

CHECKING FLOW
Mobile SW & TX Module is OK.
LGE Internal Use Only
Check TP2& TP3
TP2(High Band),
TP3(Low Band)
Signal is OK ?
Yes
Control Signal is
(VLogic,TX EN, BS)
OK ?
Yes
Check VBAT of U500 ?
Yes
TP1 Signal is OK?
Yes
TP5 signal same as
TP1?
Yes
Low Band(850/900) Tx
No
Replace PMB8815
(U101)
No
Check PMB8815
No
Replace TX Module
(U500)
No
Replace SW500
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4. TROUBLE SHOOTING
Only for training and service purposes