4. TROUBLE SHOOTING
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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
CHECKING FLOW
EGSM Tx
Check TP2& TP3
Mobile SW & TX Module is OK.
Yes
SW101 signal
same as TP1?
Replace SW101
No
Yes
Replace PMB8815 (U201)
TP2(HighBand),
TP3(Low Band)
Signal is OK ?
No
Yes
Check PMB8815 (U201)
No
Yes
Yes
Check TP4 of U101 ?
TP1 Signal is OK?
Replace TX Module (U101)
No
Control Signal is
(GpCtrl1,GpCtrl0,Tx
Enable)OK ?