Nokia 6220 Service Manual
RH-20
Company confidential
CCS Technical Documentation
Page 56
Nokia Corporation.
Issue 1 10/2003
Figure 22: FM radio block layout.
Components L103, L104, L105, C107, C108, C109, C117, C162, C163, R164, R165, R166
and R167 are not shown in the picture. Those components are placed in baseband sec-
tion, near audio amplifier N150.
and R167 are not shown in the picture. Those components are placed in baseband sec-
tion, near audio amplifier N150.
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