User Guide

Note: Never activate the GSM or WCDMA transmitter without a proper antenna load. Always connect

a 50 Ω load to the RF connector (antenna, RF-measurement equipment or at least a 2 W dummy

load); otherwise the GSM or WCDMA Power amplifier (PA) may be damaged.

GSM transmitter troubleshooting

Steps

1. Set the phone to local mode.

2. Activate RF controls in Phoenix (Testing→GSM→Rf Controls ).

Use the following settings:

3. Check the basic TX parameters (i.e. power, phase error, modulation and switching spectrum), using a

communication amalyser (for example CMU200).

RM-176

Nokia Customer Care RF troubleshooting

Page 7 –22 COMPANY CONFIDENTIAL Issue 1