Nokia 6260 RM-25, Service Manual

Page: 176 / 316

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
RM-25
Nokia Customer Care RF troubleshooting
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