Receiver Diagnostic Signal Tracing - Nokia 6265 Rf Description And Troubleshooting

6265/6265i/6268 (RM-66)
RF Description and Troubleshooting
RX_IN
RX_QN
Figure 31: PCS spectrum and the test points on the top side of the main PWB

Receiver Diagnostic Signal Tracing

Use the following steps to trace the receiver signal.
1. Inject an external signal source of –25dBm to the RF input. An RF signal
generator is recommended, however an Agilent call box 8960 can also be used.
2. Press the Call Setup button, press the Active Cell soft button, and select CW.
3. Inject a CW signal for PCS (1960MHz) or Cell/AMPS (881.52MHz) at a fixed
-25dBm power level.
4. Use an AAS-10 probe to take measurements. Signal levels are approximate, and
accuracy may be +/- 2dB or more depending on the position and grounding of
the probe.
Page 38
-615kHz -615kHz
CH600 CH600
1960MHz 1960MHz
CDMA PCS Spectrum CDMA PCS Spectrum
CDMA PCS Spectrum CDMA PCS Spectrum
©2005 Nokia Corporation
CH610 CH610
1960.5MHz 1960.5MHz
500kHz 500kHz
+615kHz +615kHz
Company Confidential
RX_IP
RX_QP
Issue 1 11/2005