Hold down FN Key and Press the letter Q hold for(3 sec) Release Keys (Keyboard Light flashes then turns off)
Hold down FN Key and Press the letter W hold for(3 sec) Release Keys (Keyboard Light flashes then turns off)
Hold down FN Key and Press the letter E hold for(3 sec) Release Keys (Keyboard Light flashes then turns off)

Hold down FN Key and Press the letter P hold for (5 sec) or release Keys when P flashes repeatedly.

Click on the link for actual demonstration
https://youtu.be/5wSxaSwaEZQ