User Guide

6015/6015i/6016i/6019i (RH-55), 6012 (RM-20)
Troubleshooting - RF Nokia Customer Care
Page 34 ©2004 Nokia Corporation Company Confidential Issue 1 - Revision 002 09/2004
Receiver Diagnostic Signal Tracing
Use the following steps to trace a receiver signal.
1. Inject an external signal source of –25dBm into the RF input. An Agilent call box
8960 is recommended.
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.
Receiver IF RF
The test point measurements were taken using an AAS-10 probe. Signal levels are
approximate, and accuracy may be +/- 2dB or more, depending on the position of the
grounding probe.
Figure 29: Receiver RF troubleshooting test points
2
7
5
4
3
6
CDMA IF
SAW filter
AMPS IF
crystal filter
PCS RF
SAW filter
Alfred
RX FE IC
Cell RF
SAW filter
1