My printer randomly started printing the letters 'PDF' upside down at the bottom of every page and prints out an extra sheet with the letters 'PDF' at the top on every print job. This started about 3 weeks ago, or rather i started noticing about 3 weeks ago. This is happening regardless of the print source, be it my Windows 10 machine, my Wife's Mac or an iPad/iPhone so I am figuring this has to be something in the printer firmware rather than PC software. Have checked for firmware updates and everything is up to date.
Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".