Lenovo z510 - Turn ON keyboard backlght

[eMJay05]

My laptop is Lenovo Ideapad z510, Recently  the function key in my keyboard is not working. Because of which i could not turn on the backlight of keyboard. Is there any other way to turn ON the keyboard baclight.

P.S.: I am using an external keyboard for other function keys.

[Saperkus]

If I remember correctly, Lenovo Vantage app adds a battery widget, which allows to control peripherals like microphone and keyboard. Could you check, if you have the same options available in your IdeaPad?