I unboxed a new MF644Cdw and, while it functions correctly, the whining noise it makes when warming up and printing, seems extremely loud. I can hear it upstairs through a closed basement office door.
I called tech support and they said it sounded pretty normal. I was on a cell phone, so I think the level was being attenuated by noise management don't by the phone.
Is this normal????
Video with sound of warm up after plugging in attached: