User Guide

Troubleshooting Instructions CCS Technical Documentation
Page 48 ãNokia Corporation. Issue 1 01/03
FM Radio troubleshooting diagram
Notes to "FM Radio troubleshooting diagram"
Use 1MHz 1X probe when measuring Audio and clock signals with oscilloscope.
Use active RF probe when measuring frequencies with spectrum analyzer.
Note 1. RF test signal parameters:
- Amplitude, A, –67.0 dBm
- Carrier frequency, f
c
, 98,000 MHz
- Deviation, ,f, 75 kHz
- Modulating frequency f
m
, 1,000 kHz (RF generator internal)
- FM stereo, mode R=L, pilot state ON