Dell 5110cn Color Laser Printer - Manual (Page 445)

You must set the password for authority as the printer administrator to do operations as the printer
administrator.
Select Start Applications System Terminal Konsole. 1.
Type the following command on the terminal window.
su
(Type the administrator's password.)
lppasswd -g sys -a root
(Type the password for authority as the printer administrator after the Enter password prompt.)
(Retype the password for authority as the printer administrator after the Enter password again
prompt.)
2.
Uninstalling the Printer Driver
Select Start Applications System Terminal Konsole. 1.
Type the following command on the terminal window.
su
(Type the administrator's password)
rpm -e Dell-Color-Laser-5110cn
2.
The printer driver is uninstalled.