have had mine for about 16 months, used in-frequently, just had to bring in the technician:
after a spell of non use, it was not printing the nozzle check. I was not able to complete a cleaning cycle, or any sort. "cleaning failed" message. also was not printing (only tried nozzle checks and print status) though the print head would move. tech replaced the head cleaning unit, updated firmware.
works great now, here are a few findings:
i did not realize the left hand maint. tank is a spare
now there is stamp printed on your paper roll end after each print showing how much paper is left on that roll, seems useful
i was getting the "paper not loaded correctly" message when sheet feeding. the loading sequence was properly executed, the last button press command was "arrow down" and that would move to the error message. So the tech does it, but presses the "pause" button instead. Paper loads, even though the message was to press "arrow down" still did get the "paper not loaded correctly message" a time or two, but less. that problem was not solved completely. the "pause" button is what is called for with roll paper.
i now have the option of starting a new 1 or 3 yr warranty period from the time of tech visit, comments?
with the new firmware, is there any advice about aout or manual cleaning scheduling, or anything else?
the very next day after the tech visit, the very first print I tried was bumped by a cleaning, even though the last thing the tech did was put my inks back in, clean and print a test print
thanks