User Guide

Table of Contents
General RF troubleshooting ..................................................................................................................................4–7
General RF troubleshooting .............................................................................................................................4–7
RF key components ...........................................................................................................................................4–7
Auto tuning........................................................................................................................................................4–9
RM-512/514/543 receiver .................................................................................................................................. 4–10
General instructions for GSM900 RX troubleshooting ................................................................................ 4–10
Troubleshooting diagram for GSM900 receiver .......................................................................................... 4–12
General instructions for GSM 1800 RX troubleshooting ............................................................................. 4–13
Troubleshooting diagram for GSM1800 receiver ........................................................................................ 4–15
Measurement points in the receiver ............................................................................................................ 4–16
RM-512/514/543 transmitter............................................................................................................................. 4–18
General instructions for GSM 900 TX troubleshooting................................................................................ 4–18
Troubleshooting diagram for GSM900 transmitter .................................................................................... 4–20
GSM900 TX output power.............................................................................................................................. 4–20
General instructions for GSM1800 TX troubleshooting .............................................................................. 4–23
Troubleshooting diagram for GSM1800 transmitter .................................................................................. 4–25
GSM1800 TX output power............................................................................................................................ 4–25
RM-513/515 receiver........................................................................................................................................... 4–28
General instructions for GSM 850 RX troubleshooting ............................................................................... 4–28
Troubleshooting diagram for GSM850 receiver .......................................................................................... 4–30
General instructions for GSM1900 RX troubleshooting .............................................................................. 4–31
Troubleshooting diagram for GSM1900 receiver ........................................................................................ 4–33
Measurement points in the receiver ............................................................................................................ 4–34
RM-513/515 transmitter .................................................................................................................................... 4–36
General instructions for GSM 850 TX troubleshooting................................................................................ 4–36
Troubleshooting diagram for GSM850 transmitter .................................................................................... 4–38
GSM850 TX output power.............................................................................................................................. 4–39
General instructions for GSM1900 TX troubleshooting .............................................................................. 4–41
Troubleshooting diagram for GSM1900 transmitter .................................................................................. 4–43
GSM1900 TX output power............................................................................................................................ 4–44
Synthesizer troubleshooting ............................................................................................................................. 4–46
Introduction.................................................................................................................................................... 4–46
Troubleshooting diagram for PLL synthesizer ............................................................................................ 4–48
Measurement points at the VCXO ................................................................................................................. 4–49
FM radio and bluetooth troubleshooting ......................................................................................................... 4–49
Measurement settings ................................................................................................................................... 4–49
Troubleshooting diagram for FM radio........................................................................................................ 4–51
Bluetooth and FM radio test points.............................................................................................................. 4–52
Introduction to Bluetooth troubleshooting ................................................................................................ 4–53
Bluetooth settings for Phoenix..................................................................................................................... 4–53
Bluetooth self tests in Phoenix..................................................................................................................... 4–54
Bluetooth BER failure troubleshooting........................................................................................................ 4–55
Antenna troubleshooting ................................................................................................................................... 4–57
Antenna troubleshooting diagram............................................................................................................... 4–57
List of Figures
Figure 33 RF key components on PWB.................................................................................................................4–7
Figure 34 Supply points at UEM (D2200)..............................................................................................................4–8
Figure 35 Supply point at RF IC (N7600) ..............................................................................................................4–9
RM-512; RM-513; RM-514; RM-515; RM-543
RF Troubleshooting Instructions
Issue 2 COMPANY CONFIDENTIAL Page 4 –3
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