I have a 24" z3100 that just recently stopped working. The error code has to do with the formatter which may need to be replaced. It's possible the drive could be repaired on a linux system - from what I have read - but I don't have the time or inclination. It saw very light usage so it would also be good for parts if you are running a z3100 already. It had a new belt installed about a year ago. I believe it's quite full of ink as I just changed several carts plus I have a new-in-the-box magenta cart and an almost full roll of Epson Enhanced Matte paper (both included). All to be picked up together in Brooklyn ASAP for $225.
thanks!