Nokia 3155 Rf Description And Troubleshooting page 36

3155/3155i (RM-41), 3152 (RM-61)
RF Description and Troubleshooting
3. Measure a 300kHz tone on the analyzer. You should see a typical -5dBm IQ tone
for CDMA Cell.
Figure 30 shows the Cell spectrum and the test points located on the top side of the
main PWB. All four test points should be approximately equal.
WARNING: Direct current is present on these test points.
Figure 30: Cell spectrum and test points on the top side of the main PWB
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Figure 29: Receiver IQ level on Cell band
©2005 Nokia Corporation
Company Confidential
2 2
Trace A Trace A
503 kHz 503 kHz
5 dBm 5 dBm
ISSUE 1 07/2005