General Instructions For Gsm1900 Tx Troubleshooting - Nokia RM-392 Service Manual

RM-392; RM-393
RF Troubleshooting Instructions

General instructions for GSM1900 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
3. Select File and Scan product.
4. Wait a while for the PC to read the information from the phone.
5. Select Testing and RF Controls.
6. Set the parameters as follows:
i Band: GSM 1900
ii Active Unit: TX
iii TX Power Level: 0
iv TX Data Type: Random
Issue 1
Figure 71 TXC signals at PCL19
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