I've noticed that if I don't use the Epson SP7600 for a couple of days, when I next start it up she automatically goes through what sounds like a cleaning cycle. Is this in fact what it is? I assume this is normal? Is it a regular cleaning cycle, as if you pressed and held the Cleaning button for 3 sec, or is it something less? Do all the wide-format Epson printers behave in the same way?