Receiver Troubleshooting; Introduction To Receiver (Rx) Troubleshooting; Gsm Rx Chain Activation For Manual Measurements/Gsm Rssi Measurement - Nokia RM-364 Service Manual

RM-364
RF troubleshooting

Receiver troubleshooting

Introduction to receiver (RX) troubleshooting

RX can be tested by making a phone call or in local mode. For the local mode testing, use Phoenix service
software.
The main RX troubleshooting measurement is RSSI reading. This test measures the signal strength of the
received signal. For GSM RSSI measurements, see
RSSI measurement . For a similar test in WCDMA mode, see WCDMA RSSI measurement .

GSM RX chain activation for manual measurements/GSM RSSI measurement

Prerequisites
Make the following settings in Phoenix service software:
Setting
Phoenix Channel
Signal generator to
antenna connector
Issue 1
Figure 16 General voltage checking test points (main board, top side)
GSM900
37
942.46771MHz
(67.71kHz offset) at
-60dBm
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Copyright © 2008 Nokia. All rights reserved.
GSM RX chain activation for manual measurements/GSM
GSM1800
700
1842.86771MHz
(67.71kHz offset) at
-60dBm
GSM1900
661
1960.046771MHz
(67.71kHz offset) at
-60dBm
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