I just noticed this weekend that my Z3200 stopped waking up from its sleep mode to do its automatic nozzle cleans. I worked in my studio for 10 hours yesterday, and not one automatic clean was done. I tried resetting the printer to factory settings in the front panel, as well as trying different timeout sleep settings, but the Z still refused to arouse from its slumber to do this periodic maintenance. Printer is out of warranty, so my appeal is to the always helpful tech support in the LuLa community. Thanks!