Press the “down arrow” button five times – the screen will display “PPR SIZE CHK”.
With the display saying “Ready”, press the “Menu” button twice – the screen will display “Printer setup” then “ Platen Gap” on the second line of the display.
You can turn off the auto paper size checking function by following the button pressing sequence detailed below in the LCD control panel on the printer: The picture below shows the LCD printer display and the various buttons mentioned in the instructions below. You could of course just turn it off when you are running in automatic mode and need to be sure it will print each time. If the paper is larger than needed it is just a bit of a waste, but if it is smaller you risk having it print all over the platen – which is, at best, messy. The risk of course is that the printer will print on the wrong sized paper. Since this is inconvenient, or in the case of automatic timed printing to reduce nozzle clogs completely counter productive, and since I can not remember every trying to print on the wrong paper size I turn off the auto paper check function. I also quite often get this problem in a print run using A4 or letter photographic paper. I use a stack of copier paper for this and I often find that the odd sheet brings up the “Wrong paper size” warning message, although I can not ever remember the nozzle check failing because of it – the printer does not seem to check for paper size when doing nozzle checks. In reality, however, I print a lot of nozzle checks via Harvey Head Cleaner and purge prints via MIS Autoprint to try to keep my printer nozzles clear. On the face of it having the printer automatically check that you have loaded the right sized paper every time you print sounds a really helpful idea. Why would you want to turn off auto paper size checking off?