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Flow Chart of Troubleshooting
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9-17
9-10. GSM Receiver
PAM100 Pin15
≥
-65dBm
①
Yes
Resolder PAM100, L108, L109,
C132, C134, L110
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, L126, C146
No
Yes
Resolder L126, L129, L127, L128
Check UCP200
END
RX ON
Cell Power : -60dBm