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4. TROUBLE SHOOTING
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4.17.1 Checking Front-End Module Block
Setup Test Equipnment
Cell power = -74dbm
EGSM CH: 38
DCS1800 CH: 698
PCS1900 CH: 661
GSM850 CH: 190
Check TP3=2.85V?
Check U201
No
Yes
END
Check the logic in each
Mood TP1~TP2 high level
2.85V ≥ Vcc ≥ L4V?
Replace FL101
No
Yes
4.17.1 Checking Front-End Module Block