Figure 51 PIHI (N7500) test points
Synthesizer Troubleshooting
Preparations
Set Phoenix to RF local mode RX continuous.
Check the following
Check the levels in the steps below.
NO. Signal Name Test point Check
VCTCXO
1 VXO (in) C7504 2.4VDC
2 OSCIN G7500 85mVpp at 38.4MHz
3 AFC (in) R7500 1.2VDC
VCO
4 VVCO_EXT R7505 2.72VDC
5 VCO Output T7501 -17dBm at 3769.6MHz
6 VCO Control C7510 2.7VDC
RM-123; RM-145
RF troubleshooting Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 7 –13
Copyright © 2006 Nokia. All rights reserved.
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