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CHECKING FLOW
Check TP2& TP3
TP2(High Band),
TP3(Low Band)
Signal is OK ?
Control Signal is
(VLogic,TXEN,
BS1, BS2)OK ?
Check TP4 of U304 ?
TP1 Signal is OK?
TP5 signal same
as TP1?
Mobile SW & FEM is OK.
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Only for training and service purposes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
EGSM Tx
4. TROUBLE SHOOTING
Replace PMB8810 (U102)
Check PMB8810
ReplaceFEM (U304)
Replace SW301
72/136
72/140
72/140
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4. TROUBLE SHOOTING
LGE Internal Use Only
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