Nokia 6260 RM-25 Service Manual page 176

Mobile terminal

Table of Contents

RM-25

Nokia Customer Care

RF troubleshooting

Figure 118 RX Channel Select Filter Calibration...................................................................................................................7–19

Figure 119 RX calibration (Example)......................................................................................................................................7–20

Figure 120 RX calibration with band EGSM900 (Example)...............................................................................................7–21

Figure 121 RX calibration values (Example).........................................................................................................................7–21

Figure 122 TX RF block diagram...............................................................................................................................................7–22

Figure 123 Upper and lower shielding cans.........................................................................................................................7–23

Figure 124 Preparing for transmitter troubleshooting....................................................................................................7–24

Figure 125 TX-BB interface troubleshooting and control signals.................................................................................7–25

Figure 126 Oscilloscope screen shots.....................................................................................................................................7–26

Figure 127 RF side of transmitter troubleshooting...........................................................................................................7–27

Figure 128 Oscilloscope screen shots (RF)............................................................................................................................7–28

Figure 129 RF controls.................................................................................................................................................................7–29

Figure 130 Tx IQ tuning..............................................................................................................................................................7–29

Figure 131 Phoenix set-up (Tx IQ Tuning windows).........................................................................................................7–30

Figure 132 Spectrum analyzer screen shot when performing IQ tuning, part 1......................................................7–31

Figure 133 Spectrum analyzer screen shot when performing IQ tuning, part 2......................................................7–32

Figure 134 Phoenix menu select (Tx Power Level Tuning menu).................................................................................7–33

Figure 135 Phoenix Power Level Tuning menu..................................................................................................................7–34

Figure 136 Phoenix screen shot (Tx Power Level Tuning)...............................................................................................7–35

Figure 137 Spectrum analyzer screen shot during power level tuning......................................................................7–36

Figure 138 Testpoints of the main board 1fsa_09a, top part.........................................................................................7–37

Figure 139 Testpoints of the main board 1fsa_11a, top part.........................................................................................7–38

Figure 140 Testpoints of the main board, bottom part...................................................................................................7–39

Figure 141 Synthesizer block diagram..................................................................................................................................7–40

Figure 142 Rf key component...................................................................................................................................................7–41

Figure 143 Synthesizer key components without shielding frames............................................................................7–42

Figure 144 Preparation for troubleshooting using Phoenix RF control setup..........................................................7–43

Figure 145 Troubleshooting chart for synthesizer............................................................................................................7–44

Figure 146 Bluetooth component placement.....................................................................................................................7–45

Figure 147 Phoenix settings for Bluetooth troubleshooting..........................................................................................7–46

Figure 148 Bluetooth troubleshooting..................................................................................................................................7–47

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Company Confidential

9235618 (Issue 2)

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