Samsung SCX-3405W-XAC - Manual (Page 29)

29 1. Introduction
Turning on the machine
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 21).
2 Power is turned on automatically.
For SCX-340x/SCX-340xW Series, press ( Power ) button on the
control panel.
If you want to turn the power off, press and hold (Power) button for
about 3 seconds.