General Instructions For Gsm 1800 Rx Troubleshooting - Nokia RM-392 Service Manual

RM-392; RM-393
RF Troubleshooting Instructions

General instructions for GSM 1800 RX troubleshooting

Steps
1. Connect the phone to a PC with the module repair jig.
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 Active Unit: RX
ii Band: GSM 1800
iii Operation Mode: Continuous mode
iv RX/TX Channel 700
v AGC: 8: FEG_ON + DTOS_ON+BB_6=Vgain_36
Results
The setup should now look like this:
Issue 1
Figure 35 900 RX I/Q signal waveform
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