Canon LBP7660Cdn Manual page 464

Proceed to Step 6
6
Perform a hard reset or restart the printer.
After performing a hard reset or restarting the printer, the settings are effective.
NOTE
To perform a hard reset
You can perform a hard reset using the following procedure.
1. Click [Settings/Registration].
2. Select [Device Control] from the [Output/Control] menu.
3. Select [Hard Reset], then click [Execute].
if you do not specify the settings for the other options.