Instructions
Eject the disk in the your PS3.
Sign out of your PlayStation Network account.
Sign out of your PS3 user profile.
Reach around to the back of the PS3 and find the power switch. The power switch is a button that slopes to the left when it is powered on. It slopes to the right when it is powered off. Press the button down to power off your PS3, skipping the red light standby mode altogether. Slim PS3s do not come with a power switch in the back. To turn off the red light on a Slim PS3, unplug the power cable from its outlet.