Dell B1163/W Multifunction Mono Laser Printer - Manual (Page 21)

21 1. Introduction
Turning the machine ON
1 Connect the machine to the electricity supply first.
Turn the switch on if the machine has a power switch.
Illustrations on this user’s guide may differ from your machine depending
on its options or models. Check your machine type (see "Front view" on
page 17).
2 Press (Power) button on the control panel.
If you want to turn the power off, press and hold (Power) button for
about 3 seconds.