I don't know what's wrong with my printer, doesn't answer commands and gives "unknown error" and keeps making the soud of a steamboat even though it isn't doing anything.
sounds like normal for most printers to me, I hate the damn things. I bought my first one like a year and some ago, didn't hook it up for 9 months, and currently it's unplugged.
I should soon do some maintenance on it, but I've barely printed from it, and it was a $400+ color laser printer.
edit: What Drac said.