You can't just shoot a printer if it makes "unexpected noise".
It's a printer for crying out loud. That's what it does.
I mean, my laser printer has pretty regular sound patterns and usually just does weird maintenance noises sometimes. But I remember the era when everyone had an inkjet, hoo boy, you tried to print a page and then there was a bunch of really incomprehensible noises and then you might get a printout, maybe.