we use a HP color laser jet 200 m251nw. It's nice, and 4 years old. We had some problems with it that we solved through changing the toner (some part of it had come out of the box, the actual toner box I mean, so the toner was damaged, apparently).
However, the printer still has some troubles, it sometimes prints red lines on the pages. Any way to change that? Still a toner problem? I updated the firmware and drivers etc., and the problem is new, but somehow...