Nokia 2125 Troubleshooting Manual page 33

Nokia Customer Care
7. Use RF PDM to adjust the AFC to center the VCTCXO. The tuning range is
approximately +/- 10kHz. Adjust the AFC so that the output signal is within
+/-150Hz. If using the spectrum analyzer, narrow the span to 1 kHz or less.
8. If the VCTCXO does not tune, replace the UEMC.
ISSUE 1 08/2005
Figure 24: RF PDM dialog box
Figure 25: Tx output for Cell channel 384 at 25C
©2005 Nokia Corporation
2125/2125i/2126/2126i/2128i (RH-71)
RF Description and Troubleshooting
Company Confidential
Adjust AFC to
center VCTCXO
manually
Page 33