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4. TROUBLE SHOOTING
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Only for training and service purposes
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Chenck TCXO Block
Refer to 1.3
Check TP1
If GSM over 31 dBm ?
If DCS, PCS over Over 28 dBm?
GSM/DCS/PCS TX is OK
Check other part
Yes
No
Change the Board
Check TP2,3
If GSM(TP2) under 6 dBm ?
If DCS, PCS (TP3) under 6 dBm ?
Check Tx Module, FEMID
Refer to 4.4
Yes
No
Check RTR & PAD
Check soldering and
components
No Problem
No
Still exist Problem
START