Nokia RM-484 - Table of Contents

Table of Contents
General RF troubleshooting ..................................................................................................................................4–5
Introduction to RF troubleshooting ................................................................................................................4–5
RF key components and test points ................................................................................................................4–6
Auto tuning.............................................................................................................................................................4–7
Introduction to RF tunings...............................................................................................................................4–7
Auto tuning........................................................................................................................................................4–7
Self Test Troubleshooting......................................................................................................................................4–7
Self test troubleshooting..................................................................................................................................4–7
Receiver Troubleshooting .....................................................................................................................................4–9
Introduction to receiver (RX) troubleshooting...............................................................................................4–9
GSM RX chain activation for manual measurements/GSM RSSI measurement ...........................................4–9
GSM receiver troubleshooting flowchart ..................................................................................................... 4–10
WCDMA RX chain activation for manual measurement.............................................................................. 4–10
WCDMA RSSI measurement ........................................................................................................................... 4–11
WCDMA receiver troubleshooting flowchart................................................................................................ 4–13
Transmitter Troubleshooting............................................................................................................................. 4–13
General instructions for transmitter (TX) troubleshooting........................................................................ 4–13
GSM transmitter troubleshooting................................................................................................................. 4–13
WCDMA transmitter troubleshooting ........................................................................................................... 4–16
Antenna Troubleshooting .................................................................................................................................. 4–17
Antenna troubleshooting.............................................................................................................................. 4–17
List of Figures
Figure 28 RF key components ...............................................................................................................................4–6
Figure 29 RF test points.........................................................................................................................................4–6
Figure 30 Phoenix GSM RSSI reading window.....................................................................................................4–9
Figure 31 Phoenix WCDMA RX Control window................................................................................................ 4–11
Figure 32 WCDMA RX generator settings .......................................................................................................... 4–12
Figure 33 Phoenix WCDMA RX power measurement window ........................................................................ 4–12
Figure 34 Phoenix GSM RF controls window..................................................................................................... 4–14
Figure 35 Antenna contacts and matching components ................................................................................ 4–18
RM-484; RM-485; RM-486
RF Troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 4 –3
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