User Guide
Table of Contents
General RF troubleshooting ..................................................................................................................................4–5
Introduction to RF troubleshooting ................................................................................................................4–5
RF key components ...........................................................................................................................................4–6
Auto tuning for BB5.0 ............................................................................................................................................4–6
Self test troubleshooting.......................................................................................................................................4–8
Receiver troubleshooting ......................................................................................................................................4–8
Introduction to receiver (RX) troubleshooting...............................................................................................4–8
GSM RX chain activation for manual measurements/GSM RSSI measurement ...........................................4–8
WCDMA RX chain activation for manual measurement.................................................................................4–9
WCDMA RSSI measurement ........................................................................................................................... 4–10
Transmitter troubleshooting ............................................................................................................................. 4–11
General instructions for transmitter (TX) troubleshooting........................................................................ 4–11
GSM transmitter troubleshooting................................................................................................................. 4–11
GSM transmitter troubleshooting flowchart ............................................................................................... 4–14
WCDMA transmitter troubleshooting ........................................................................................................... 4–14
WCDMA troubleshooting................................................................................................................................ 4–16
List of Figures
Figure 15 Auto tuning concept with CMU200......................................................................................................4–7
Figure 16 Typical readings ................................................................................................................................. 4–13
RA-6
RF troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 4 –3
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