Gsm Receiver Tunings; Rx Calibration (Gsm) - Nokia n81 Service Manual

RM-179; RM-223
RF troubleshooting
Steps
1. From the Operating mode drop-down menu, set mode to Local.
2. Choose Tuning→PA Detection .
3. Click Tune.
4. Check that the detected PA manufacturers are corresponding to the actual chips on the board.
5. To end the procedure, click Close.

GSM receiver tunings

Rx calibration (GSM)

Context
Rx Calibration is used to find out the real gain values of the GSM Rx AGC system and tuning response of the
AFC system (AFC D/A init value and AFC slope)
Steps
1. Connect the GSM connector of the module jig to a signal generator.
Phoenix service software.
2. Start
3. From the Operating mode drop-down menu, set mode to Local.
4. Choose Tuning→GSM→Rx Calibration .
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