Lexmark MX421
Try one or more of the following:
From the home screen, touch Scan Center.
Note: This application is supported only in some printer models. For more information, see Supported applications.
Select a destination, and then check its settings.
You can show only a limited number of application shortcuts on the home screen.
To use the shortcut number, press # followed by the shortcut number. To obtain your shortcut number, contact your administrator.
Your administrator can set the icon to appear on the home screen.
Does your scanner fail to scan or copy documents? Try checking the power cord connection.
Check for obstructions that keep the scanner cover open.