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Flow Chart of Troubleshooting
9-19
9-11. GSM900 Receiver
RX ON
Cell Power : -60dBm
PAM100 Pin17
≥
-65dBm
Yes
Resolder
PAM100,L100,C106,C102
No
Yes
No
Check PAM100
pin4,5 = L
F101 Pin8,9
≥
-68dBm
Check Tx Module
control circuit
No
Yes
Resolder F101
Yes
U101
pin 17
≥
-70dBm
pin 18
≥
-70dBm
Resolder C114,C115,L109
No
U101
pin 4
≥
2.8V
Yes
U101
pin 27,28,29,30
≥
0.2Vp_p
No
Check & Resolder
L113
And PMU Part
No
Yes
Check UCP200
Resolder U101
Yes
END
Summary of Contents for GT-M2710L
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