Nokia RM-632 - Table of Contents

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 auto tuning............................................................................................................................ 4–6
Auto tuning procedure .................................................................................................................................... 4–7
Self test troubleshooting...................................................................................................................................... 4–7
Phoenix 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............................................................................. 4–11
WCDMA RSSI measurement .......................................................................................................................... 4–12
WCDMA receiver troubleshooting flowchart............................................................................................... 4–13
Transmitter troubleshooting ............................................................................................................................ 4–14
Introduction to transmitter (TX) troubleshooting..................................................................................... 4–14
GSM transmitter troubleshooting................................................................................................................ 4–14
GSM transmitter troubleshooting flowchart .............................................................................................. 4–18
WCDMA transmitter troubleshooting .......................................................................................................... 4–18
WCDMA transmitter troubleshooting flowchart......................................................................................... 4–22
Troubleshooting with RF-shield removed ....................................................................................................... 4–23
Introduction................................................................................................................................................... 4–23
Voltage checking ........................................................................................................................................... 4–23
VCTCXO troubleshooting ............................................................................................................................... 4–25
RF component reference .............................................................................................................................. 4–26
Antenna............................................................................................................................................................... 4–28
Antenna overview ......................................................................................................................................... 4–28
List of Figures
Figure 15 RF key components .............................................................................................................................. 4–6
Figure 16 Auto tuning concept with CMU200..................................................................................................... 4–7
Figure 17 Phoenix RSSI Reading window ........................................................................................................... 4–9
Figure 18 Phoenix Rx Control window with sample settings (WCDMA band I)............................................ 4–11
Figure 19 Phoenix Rx Power Measurement window...................................................................................... 4–12
Figure 20 Phoenix RF Controls window ........................................................................................................... 4–14
Figure 21 Typical readings ................................................................................................................................ 4–16
Figure 22 Phoenix WCDMA Tx control window ............................................................................................... 4–19
Figure 23 Typical readings ................................................................................................................................ 4–21
Figure 24 Phoenix WCDMA Tx Control window settings................................................................................. 4–24
Figure 25 Test points for voltage checking ..................................................................................................... 4–25
Figure 26 Component reference block diagram.............................................................................................. 4–27
RM-632; RM-634; RM-699
RF troubleshooting
Issue 3 COMPANY CONFIDENTIAL Page 4 – 3
Copyright © 2010 Nokia. All rights reserved.