Canon i-SENSYS LBP6670dn User Manual page 685

6
Enter the current password in [Current System Manager Password].
7
Specify the keys which you want to lock.
(1) Select the check boxes respectively for keys, which you want to lock, on the control panel on the printer.
For details on the keys, see
(2) Click [OK].
Downloaded from ManualsPrinter.com Manuals
"Control Panel."