Samsung ML-3712ND/XAA Manual De Usuario

If the printer driver does not work properly, uninstall the driver and 
reinstall it.

Make sure that the machine is connected to your computer 
and powered on.

When the Administrator Login window appears, type “root” 
in the Login field and enter the system password.

You must log in as a super user (root) to uninstall the printer 
driver. If you are not a super user, ask your system 
administrator.

Click the icon at the bottom of the desktop. When the 
Terminal screen appears, type in the following.

[root@localhost root]#cd /opt/Samsung/mfp/uninstall/

[root@localhost uninstall]#./uninstall.sh

Click Uninstall.

Click Next.

Click Finish.