Comment by necovek
I have a somewhat older, but higher-end m475dn. Last year, scanner calibration mechanism started failing, and printer couldn't complete the init sequence anymore: it can't be used as a printer anymore either.
It has only seen home office use, and didn't run through the second set of toners.
No service shop wants to touch it either, so I've got a 30kg paperweight.
This is why we need all software and firmware to be free software.