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9-2-2. GSM 850 Transmitter
**Please Check the Main Antenna ,rear, front case, and screws, and then follow the chain below.
If you check the tx chain, Check the not only RF Device but also resistor, inductor and capacitor.
Tx ON (Level :5)
Battery voltage:3.8V
Check C127 >= 14dBm?
Check C168 >= 34.5dBm?
Check C100 >= 33dBm?
Yes
Yes
Yes
Yes
The End
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No
Check The U100
No
Replace PAM100
No
Replace RFS102
9-39
Flow Chart of Troubleshooting
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