If the printer is not functioning properly, or if a communications error message appears when you try to use the printer, you may need to remove and reinstall the printer software.
Close all open software applications.
From the Finder desktop, double-click the Lexmark 3500-4500 Series folder.
Double-click the Uninstaller icon.
Follow the instructions on the computer screen to remove the printer software.
Restart the computer before reinstalling the printer software.
Insert the CD, and then follow the instructions on the computer screen to reinstall the software.