Take single trig measurement on the rising edge of the DAT signal.
Figure 50 Data transfer
Keyboard troubleshooting
Context
There are two possible failure modes in the keyboard module:
• One or more keys can be stuck, so that the key does not react when a keydome is pressed. This kind of
failure is caused by mechanical reasons (dirt, corrosion).
• Malfunction of several keys at the same time; this happens when one or more rows or columns are faulty
(shortcut or open connection). For a more detailed description of the keyboard and keymatrix, see
section Keyboard in System Module.
If the failure mode is not clear, start with the Keyboard Test in
Phoenix
.
RM-180
BB Troubleshooting and Tuning Guide Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 6 –33
Copyright © 2006 Nokia. All rights reserved.
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