User Guide

RM-94

Nokia Customer Care 6(b) - RF Troubleshooting

10 COMPANY CONFIDENTIAL Issue 1 04/2005

Select Scan Product Ctrl-R

Wait until the phone information is shown in the lower right corner of the screen.

Set <operating mode> to <local mode>.

Select Testing T

RF Controls F

Select Band GSM 900 or GSM1800 or GSM1900

Active unit RX

Operation mode Continuous

RX/TX Channel 37 or 700 or 661

Please refer to the fault finding chart and Appendix for proper levels at different test points.

Measuring analogue RX I/Q signals using oscilloscope

Measuring with an oscilloscope RX I and RX Q signals on the test points <RXI> respectively

<RXQ> is recommended only if the RSSI reading does not provide enough information. Input

level = -60dBm.

Start Phoenix Service Software and open FBUS connection.

Select Scan Product Ctrl-R

Wait until phone information is shown in the lower right corner of the screen.

Set operating mode to <local mode>.

Select Testing T

RF Controls F

Wait until the RF Controls

window pops up.

Select Band GSM 900 or GSM1800 or GSM1900

Active unit RX

Operation mode Continuous

RX/TX Channel 37 or 700 or 661

AGC 10

The following picture should be displayed on an oscilloscope's screen if the receiver is working

properly: