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Table of Contents

General RF troubleshooting ..................................................................................................................................4–5

Introduction to RF troubleshooting ................................................................................................................4–5

RF key components ...........................................................................................................................................4–6

Auto tuning.............................................................................................................................................................4–8

Introduction to auto tuning.............................................................................................................................4–8

Auto tuning procedure .....................................................................................................................................4–8

Self test troubleshooting.......................................................................................................................................4–9

Phoenix self test troubleshooting ...................................................................................................................4–9

Receiver troubleshooting ................................................................................................................................... 4–11

Introduction to receiver (RX) troubleshooting............................................................................................ 4–11

GSM RX chain activation for manual measurements/GSM RSSI measurement ........................................ 4–11

GSM receiver troubleshooting flowchart ..................................................................................................... 4–12

WCDMA RX chain activation for manual measurement.............................................................................. 4–13

WCDMA RSSI measurement ........................................................................................................................... 4–14

WCDMA receiver troubleshooting flowchart................................................................................................ 4–15

Transmitter troubleshooting ............................................................................................................................. 4–16

Introduction to transmitter (TX) troubleshooting...................................................................................... 4–16

GSM transmitter troubleshooting................................................................................................................. 4–16

GSM transmitter troubleshooting flowchart ............................................................................................... 4–20

WCDMA transmitter troubleshooting ........................................................................................................... 4–21

WCDMA transmitter troubleshooting flowchart.......................................................................................... 4–24

Troubleshooting with RF shield removed......................................................................................................... 4–25

Introduction.................................................................................................................................................... 4–25

Voltage checking ............................................................................................................................................ 4–25

VCTCXO troubleshooting ................................................................................................................................ 4–27

RF component reference ............................................................................................................................... 4–27

Antenna................................................................................................................................................................ 4–29

Antenna overview .......................................................................................................................................... 4–29

Main antenna functionality........................................................................................................................... 4–30

Bluetooth antenna functionality .................................................................................................................. 4–31

Antenna troubleshooting.............................................................................................................................. 4–31

List of Tables

Table 11 RM-598 RF component reference....................................................................................................... 4–27

Table 12 RM-604 RF component reference....................................................................................................... 4–28

List of Figures

Figure 13 RM-598 RF key components - bottom .................................................................................................4–6

Figure 14 RM-604 RF key components - bottom .................................................................................................4–7

Figure 15 Auto tuning concept with CMU200......................................................................................................4–8

Figure 16 Phoenix RSSI Reading window ......................................................................................................... 4–11

Figure 17 Phoenix Rx Control window with sample settings (WCDMA band I)............................................. 4–13

Figure 18 Phoenix Rx Power Measurement window....................................................................................... 4–14

Figure 19 Phoenix RF Controls window ............................................................................................................ 4–16

Figure 20 Typical readings ................................................................................................................................. 4–18

Figure 21 Phoenix WCDMA Tx control window ................................................................................................ 4–21

Figure 22 Typical readings ................................................................................................................................. 4–23

Figure 23 Test points for voltage checking ...................................................................................................... 4–26

RM-598; RM-604

RF Troubleshooting

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