Table of Contents
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RM-272; RM-273
RF Troubleshooting and Manual Tuning Guide
Introduction to RF troubleshooting .....................................................................................................................4-5
RF key components ................................................................................................................................................4-6
BOM1 versus BOM3 .................................................................................................................................................4-6
Receiver troubleshooting ......................................................................................................................................4-9
Introduction to RX troubleshooting ................................................................................................................4-9
General instructions for RX troubleshooting..................................................................................................4-9
troubleshooting..............................................................................................................................
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tunings...........................................................................................................................................
tunings.....................................................................................................................................
(GSM)..........................................................................................................................................
List of Tables
Table 9 Rf channel filter calibration tuning limits
Table 10 RF tuning limits in Rx
List of Figures
Figure 17 RF key components, bottom side main board ...................................................................................4-6
Figure 18 RF block ..................................................................................................................................................4-8
Figure 19 The visual differences between BOM1 and BOM3 ..............................................................................4-9
Figure 20 RF Controls window
Figure 21 RSSI Reading window
Figure 22 RF Controls window
Figure 23 Location of the GSM and BT antenna C-clips on the
Figure 24 GSM and BT antenna contact pads on the antenna module
Figure 25 Antenna C-clips on the PWB
Figure 26 Auto tuning concept with
Figure 27 Rf channel filter calibration typical values
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CMU200...................................................................................................
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4-14
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4-17
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4-21
4-22
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4-27
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4-26
4-11
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4-22
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Troubleshooting
