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4. TROUBLE SHOOTING
㝘⪌HG 㵬㦤G 㠄⸬㡸G 㵲㡸G ㍌G 㛺㏩⏼␘UU㝘⪌HG 㵬㦤G 㠄⸬
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4.17.3 Checking GSM Tx part
Table 4.17.3 GPAM Logic Control
Setup Test Equipnment
Cell power = -60dbm
Tx Power Level Set
GSM850/GSM900 = 5,
DCS/PCS = 0
Is the level of TP4 same
to Table 4.17.3
TP2, 30dBm over?
TP3, 33dBm over?
Check TP1,
GSM850, EGSM 32dBm
DCS,PCS 29dBm over?
Re-download & calibration
Yes
Check U201
No
Remove U101 and check
The power of pin1, pin8 (on board)
No
The power of pin1, pin8
Replace U101
No
Check U201
No
Yes
Yes
Yes
Yes
Yes
4.17.3 Checking GSM Tx part