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Figure 8 SIM power-up sequence
User interface troubleshooting
Keyboard troubleshooting
Context
There are two possible failure modes in the keyboard module:
• One or more keys are stuck, so that the key does not react when a keydome is pressed. This kind of failure
is caused by mechanical reasons (dirt or corrosion).
• Malfunction of several keys at the same time; this happens when one or more rows or columns are failing
(shortcut or open connection).
If the failure mode is not clear, start with the Keyboard test in Phoenix.
RM-257; RM-270; RM-277
BB Troubleshooting and Manual Tuning Guide
Page 3 –24
COMPANY CONFIDENTIAL
Issue 1
Copyright © 2007 Nokia. All rights reserved.
Содержание 3555
Страница 113: ...4 RF troubleshooting Nokia Customer Care Issue 1 COMPANY CONFIDENTIAL Page 4 1 Copyright 2007 Nokia All rights reserved ...
Страница 133: ...5 System Module Nokia Customer Care Issue 1 COMPANY CONFIDENTIAL Page 5 1 Copyright 2007 Nokia All rights reserved ...
Страница 153: ...Glossary Nokia Customer Care Issue 1 COMPANY CONFIDENTIAL Page Glossary 1 Copyright 2007 Nokia All rights reserved ...