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RM-291
Baseband troubleshooting
General baseband troubleshooting......................................................................................................................6-5
Phone is dead ....................................................................................................................................................6-5
Flash programming does not work.................................................................................................................6-7
Easy flash programming does not work .........................................................................................................6-9
faults.................................................................................................................................................
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interface.......................................................................................................................................................
display...................................................................................................................................................
corrupt............................................................................................................................................
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troubleshooting........................................................................................................................................
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List of Figures
Figure 71 Phone is dead troubleshooting ...........................................................................................................6-6
Figure 72 Flash programming fault......................................................................................................................6-8
Figure 73 Easy flash programming
Figure 74 Power does not stay on or the phone is
Figure 75 Troubleshooting when the "Contact Service" message is seen
Figure 76 No registering or call
Figure 77 Insert SIM card fault
Figure 78 Signal diagram
Figure 79 Signal diagram
Figure 80 Blank
display.......................................................................................................................................
Figure 81 Display is
corrupt................................................................................................................................
Figure 82 Dead keys
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Figure 83 No backlight for display or keys
Figure 84 Phoenix audio test window
Figure 85 PWB audio test points
Figure 86 Test arrangement for
Figure 87 Test arrangement for earpiece
Figure 88 Checking IHF and ring tone by using
Figure 89 Checking vibra function by using vibra control
Figure 90 Headset earpiece fault flow chart
Figure 91 Microphone fault flow
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COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
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Table of Contents
Troubleshooting
