hit counter script

Keyboard Troubleshooting - Nokia RM-57 Service Manual

Nokia 6681/6682 mobile terminal
Table of Contents

Advertisement

Nokia Customer Care
Take single trig measurement on the rising edge of the DAT signal.

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, rust).
• Malfunction of several keys at the same time; this happens when one or more rows or columns are failing
(shortcut or open connection). For a more detailed description of the keyboard and keymatrix, see section
Keyboard (Page
9–21).
If the failure mode is not clear, start with the Keyboard Test in Phoenix.
Page 6–26
Take singe trig measurement on the rising edge of the DAT signal.
Figure 52 MMC card initialization
Figure 53 Data transfer
Copyright ©2005 Nokia. All Rights Reserved.
BB Troubleshooting and Manual Tuning Guide
Legend
Legend
Company Confidential
RM-57/58
Issue 1

Advertisement

Table of Contents
loading

This manual is also suitable for:

Rm-58

Table of Contents