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CHECKING FLOW
Check TP1 of SW301
TP1 Signal is OK?
Check TP11 of U303
Control Signal is
(TP6,7,8,9,10)OK ?
TP2,3(High Band),
TP4,5(Low Band)
Signal is OK ?
Mobile SW & TX
Module is OK.
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
No
Yes
No
Yes
No
Yes
EGSM Rx
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4. TROUBLE SHOOTING
4. TROUBLE SHOOTING
Replace Mobile SW (SW301)
Check MT6253(U102)
Replace TX module (U303)
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