Hello Tarri
Sounds like you have tried everything already, so it would be a hardware escalation: 1-800-821-2797 or 1-800-835-6100.
Helo,
My personal Phaser 6510DN printer stopped printing after 999 pages with error 016-519.
Restarted, Init and delete data done, firmware updated to newest 64.67.91, even that battery on board has been removed for a while, but no help. This print restriction is still in effect. Prints only startup page after boot. All other
prints end to error 016-519. Original cartridge toner levels are over 50%.
This problem has been asked for years in this forum. Has anyone really managed to make this printer work for more than 1000 pages? Is the only solution to buy a printer from annother manufacturer?