It refuses to print anything, even internal prints like status pages and configuration pages. Seems like same problem as this forum post:[https://h30434.www3.hp.com/t5/Printers-Archive-Read-Only/Designjet-T520-24-quot-stalled-printing/m-p/5399475/highlight/true#M865598 HP Forum] - Lucas Goossen 01-12-2018