Lenovo Y520-15IKBN User Manual page 8

Chapter 1. Getting to know your computer
The following describes the features of each function key.
Fn + F1:
Fn + F2:
Fn + F3:
Fn + F4:
Fn + F5:
Fn + F6:
Fn + F7:
Fn + F8:
Fn + F9:
Fn + F10:
Fn + F11:
Fn + F12:
Fn + B:
Fn + P:
Fn + C:
Fn + S:
Fn + :
Fn + :
Fn + :
Fn + :
Fn + Space 
(on select models):
Mutes/unmutes the sound.
Decreases the volume level.
Increases the volume level.
Enables/disables the microphone.
Refreshes the desktop or the currently active window.
Enables/disables the touchpad.
Enables/disables Airplane mode.
Enables/disables the integrated camera.
Locks the screen.
Toggles the display between the computer and an external device.
Decreases the display brightness.
Increases the display brightness.
Activates the break function.
Activates the pause function.
Enables/disables the scroll lock.
Activates the system request.
Activates the Pgup key function.
Activates the Pgdn key function.
Activates the home key function.
Activates the end key function.
Adjusts the keyboard backlight (off
4
dim bright off).