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4. TROUBLE SHOOTING
(2) Checking Mobile SW & TX Module
CHECKING FLOW
Check TP2& TP3
TP2(High Band),
TP3(Low Band)
Signal is OK ?
Control Signal is
(VLogic,TX EN,
BS1, BS2)OK ?
Check TP4 of U300 ?
TP1 Signal is OK?
TP5 signal same
as TP1?
Mobile SW & FEM is OK.
LGE Internal Use Only
No
Yes
No
Yes
Yes
No
Yes
No
Yes
EGSM Tx
4. TROUBLE SHOOTING
Replace PMB8810 (U100)
Check PMB8810
ReplaceFEM (U300)
Replace SW300
73/140
73/140
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