Nokia RH-64 Service Manual page 161

RH-64
RF troubleshooting Nokia Customer Care
Figure 140 PLL Troubleshooting diagram
The 26MHz signal from the VCXO can be measured by probing R2900. The level at this point is approx. 770mVpp.
Frequency of this oscillator is adjusted by changing the AFC-register inside the UEM IC. Example Signal Measured
at VCXO output (R2900).
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