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4. TROUBLE SHOOTING
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ΟΝΪ͑ΗΠΣ͑ΥΣΒΚΟΚΟΘ͑ΒΟΕ͑ΤΖΣΧΚΔΖ͑ΡΦΣΡΠΤΖΤ
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
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CHECKING FLOW
4. TROUBLE SHOOTING
Check TP2 & TP3
Mobile SW & TX module is OK.
Yes
TP11 signal same
as TP1?
Replace SW301
No
Yes
Replace MT6253 (U102)
TP2(High Band),
TP3(Low Band)
Signal is OK ?
No
Yes
Check MT6253 (U102)
Control Signal is
(TP4,5,6,7,8,9)
OK ?
No
Yes
Yes
Check TP9 of U303 ?
TP1 Signal is OK?
Replace TX module (U303)
No
EGSM Tx