4. TROUBLE SHOOTING
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CHECKING FLOW
Check TP1 of SW301
TP1 Signal is OK?
Replace Mobile SW (SW301)
Yes
No
Yes
Mobile SW & TX Module and
Saw Filter is OK.
Check Main Chip U102
Control Signal is
TP4, TP7
(VLogic, BS) OK ?
No
Yes
Check U301 ?
Replace FL 301 or U301
TP2(High Band),
TP3(Low Band)
Signal is OK ?
No
Yes
EGSM Rx