Table of Contents
General RF troubleshooting ..................................................................................................................................4–5
Introduction to RF troubleshooting ................................................................................................................4–5
RF key components ...........................................................................................................................................4–6
Auto tuning.............................................................................................................................................................4–6
Introduction to RF tunings...............................................................................................................................4–6
Auto tuning........................................................................................................................................................4–6
Self Test Troubleshooting......................................................................................................................................4–7
Troubleshooting with RF Self tests..................................................................................................................4–7
Receiver Troubleshooting .................................................................................................................................. 4–20
Introduction to receiver (RX) troubleshooting............................................................................................ 4–20
GSM RX chain activation for manual measurements/GSM RSSI measurement ........................................ 4–21
GSM receiver troubleshooting flowchart ..................................................................................................... 4–22
WCDMA RX chain activation for manual measurement.............................................................................. 4–22
WCDMA RSSI measurement ........................................................................................................................... 4–23
WCDMA receiver troubleshooting flowchart................................................................................................ 4–25
Transmitter Troubleshooting............................................................................................................................. 4–25
General instructions for transmitter (TX) troubleshooting........................................................................ 4–25
GSM transmitter troubleshooting................................................................................................................. 4–26
WCDMA transmitter troubleshooting ........................................................................................................... 4–28
Antenna Troubleshooting .................................................................................................................................. 4–29
Antenna troubleshooting.............................................................................................................................. 4–29
List of Figures
Figure 42 RF key components ...............................................................................................................................4–6
Figure 43 Phoenix GSM RSSI reading window.................................................................................................. 4–21
Figure 44 Phoenix WCDMA RX Control window................................................................................................ 4–23
Figure 45 WCDMA RX generator settings .......................................................................................................... 4–24
Figure 46 Phoenix WCDMA RX power measurement window ........................................................................ 4–24
Figure 47 Phoenix GSM RF controls window..................................................................................................... 4–26
Figure 48 Antenna contacts ............................................................................................................................... 4–30
Figure 49 Antenna contact clips on PWB .......................................................................................................... 4–30
Figure 50 Antenna matching components on PWB......................................................................................... 4–31
RM-505; RM-506
RF Troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 4 –3
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