Synthesizer; Check Synthesizer Operation - Nokia NPL-4 Series Troubleshooting Instructions

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Synthesizer

Check synthesizer operation

Start Phoenix Service Software and open FBUS connection.
Select "Scan Product" (Ctrl-R or in menu File - Scan Product).
Wait until phone information is shown in the lower right corner of the screen.
Set "operating mode" to "Local".
Open window "RF Controls" (menu Testing - RF Controls)
Set the synthesizer to the following mode:
Select->Band->GSM 1800
-Active unit->RX
-Operation mode->Continuous
-RX/TX Channel->700
The setup should now look like this:
To measure the supply voltage VR7, the tuning voltage Vc and the output frequency f
see Figure : Test points of the synthesizer.
Copyright © 2005 Nokia Corporation. All rights reserved.
Issue 2 05/05
Company confidential NPL-4/5/
Troubleshooting Instructions
VCO;
Page 47