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