Why is my printer putting out black copies?

My Dell B1265dnf is producing pages that are totally black. I thought it was the toner cartridge, so I replaced it with a Dell cartridge. That did not correct the problem.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0