Rm-258 Transmitter; General Instructions For Gsm 900 Tx Troubleshooting - Nokia 2760 Service Manual

RM-258 transmitter

General instructions for GSM 900 TX troubleshooting

Steps
1. Apply a RF-cable to the RF-connector to allow the transmitted signal act as normal. RF-cable should be
connected to an attenuator at least 10dB before connected to the measurement equipment, otherwise
the PA may be damaged.
Phoenix and establish a connection to the phone with the data cable e.g. FBUS.
2. Start
Page 4 –18
Figure 40 Measurement points at the RX SAW Filters – Z7600/Z7602
Figure 41 RX I/Q signals
COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
RM-258; RM-259
RF Troubleshooting Instructions
Issue 1