Instructions
Turn on the console and one of the controllers.
Scroll through the XMB menu to the PlayStation Network symbol and then select the "Sign In" option.
Highlight "Account Management" and press the "X" button, then highlight "System Activation" and press "X" again.
Select the "PS3 System" option and press "X." Choose either "Game" or "Video," depending on the type of content you will use with the console, then press "X" again.
Highlight "Activate System" and press "X", then press "X" again to confirm the activation.