Undo the Canon Auto Shutoff Feature

Turn the printer off.
Hold the power button in for 8 "beeps".
Release and wait for about 5-10 seconds.
Turn the printer off.
Let the printer finish cycling.
Hold the power button in for two "beeps".
A status report will print and line 6 will show the auto shutoff status.

Note:The power button tests need to be done on a printer that has been turned off.