After years of no issues, this printer seems to have gone into "demo mode" within the last week which it never did before. The display screen goes through the features when idle, then between 1 and 4 times a day it will print a full feature sheet (not a test print). I've shut it down, unplugged and drained power then rebooted several times. Logging into the printer does not give me an option to shut it off. The touch screen does not have a setup option on this model. How do I shut off the demo mode?
I've read that there may be an issue with a cartridge that causes this. Both cartridges have ink and have been in the printer for a while.
Edit: it also randomly prints 1 or 2 blank pages but not as often as the feature sheets
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