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How can I test the Fn key on my laptop?

I spilled a bit of coffee on my laptop and am worried that my keyboard will not work as a result. What can I do to test that the Fn key is working? I use a Lenovo laptop.

blueyellow

Press FN and the up arrow at the same time, this should turn the laptop's volume up then try with down arrow.

James
Lenovo › Laptops
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