LG -A230 Service Manual page 63

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