Nokia NPM-2NX Troubleshooting Manual page 31

CCS Technical Documentation
Audio test
Please use Phoenix RF-control to set phone to the correct operating mode.
Enable audio using Phoenix software (maintenance -> testing -> audio test mode -> set
audio test mode). See picture below.
Step 2. Local oscillator checking
Carrying out this step VCO signal of 1st and 2nd mixers can be checked. 2nd mixer RX
VHF VCO frequency is constant 268.08 MHz but for the 1st mixer UHF VCO frequency
depends on the channel. The UHF VCO frequencies for the 1st mixer are:
Channel 991:
Channel 380:
Channel 799:
1) Set signal generator frequency to 881.4091125 and level to -80 dBm.
Issue 1 07/02
2006.16 MHz
2030.88 MHz
2056.02 MHz
ãNokia Corporation
NPM-2NX
Troubleshooting
Page 31