Setting up a password
(MENU/123) 
MENU 
System 
Change PIN Try now
You can set a Personal Identification Number (PIN) to lock channels, reset the TV, and change TV settings.
The PIN input window appears. Enter a PIN. Enter it again to confirm it. The default PIN is 0000.
"" If you forget your PIN, you can reset it with your remote control. With the TV turned on, press the following buttons on the remote control to reset the PIN to 0000: MUTE → 
(Volume Up) → RETURN → 
(Volume Down) → RETURN → 
→ RETURN.
Checking Notifications
(MENU/123) 
MENU 
System 
Notifications Try now
You can view the list of event messages generated by the TV. Notifications appear on the screen when events such as an update release for an app or Samsung Account login/logout occurs.
"" To delete all notifications, select Delete All.
"" To check the SMART TV's service notifications in a web browser, select Service Notice.
Enabling game mode
(MENU/123) 
MENU 
System 
General 
Game Mode Try now
You can enable the game mode to optimise the TV's settings for playing video games with a gaming console, such as a PlayStation™ or Xbox™.
"" The game mode is not available for normal TV viewing.
"" The screen may shake somewhat.
"" When the Game Mode is enabled, Picture Mode and Sound Mode are switched to Game automatically.
"" To use a different external device, first disconnect the game console and disable the Game Mode.