Table of Contents
General instructions for cellular RF troubleshooting......................................................................................... 5–5
Cellular RF key components.................................................................................................................................. 5–5
Cellular RF main troubleshooting ........................................................................................................................ 5–6
Cellular RF main troubleshooting................................................................................................................... 5–6
Self test troubleshooting................................................................................................................................. 5–9
Troubleshooting with RF Self tests............................................................................................................ 5–9
RF tuning and testing ........................................................................................................................................ 5–11
RF auto tuning and testing with Nokia Care Suite..................................................................................... 5–11
RF auto tuning procedure ............................................................................................................................ 5–11
Automatic RF testing with Nokia Care Suite............................................................................................... 5–15
Troubleshooting with Testing And Tuning Tool ........................................................................................ 5–16
Manual transmitter (TX) testing with Phoenix........................................................................................... 5–16
General instructions for transmitter (TX) activation ............................................................................ 5–16
GSM transmitter activation...................................................................................................................... 5–17
WCDMA transmitter activation................................................................................................................ 5–19
Manual receiver (RX) testing with Phoenix ................................................................................................ 5–20
General instructions for manual receiver testing................................................................................. 5–20
GSM RX chain activation for manual measurements/GSM RSSI measurement .................................. 5–21
WCDMA RX chain activation for manual measurement........................................................................ 5–21
WCDMA RSSI measurement ..................................................................................................................... 5–22
Antenna............................................................................................................................................................... 5–23
Antenna overview ......................................................................................................................................... 5–23
Antenna troubleshooting............................................................................................................................. 5–24
List of Figures
Figure 15 Linko shields......................................................................................................................................... 5–6
Figure 16 Antenna contacts and matching components ............................................................................... 5–24
RM-750
Cellular RF troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 5 – 3
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