Flow Chart of Troubleshooting
9-10. GSM Receiver
RX ON
Cell Power : -60dBm
Yes
PAM100 Pin15 ≥
-65dBm
Yes
PAM100 Pin18
≥ -68dBm
Yes
F101
Pin 6 ≥ -70dBm
Pin 7 ≥ -70dBm
Yes
Resolder L111, L116, L112, L114
Check UCP200
END
①
No
Resolder PAM100, L103, L145,
L104, L107, C115, C170
No
③
No
Resolder F101, C129, L110
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Check PAM100 Pin9,
Pin10 = L
Yes
9-17
No
Check ANT Switch
control circuit
②
Resolder PAM100