possibly its a Firmware Bug however There is a SPAR firmware release which is solving this issue
click Here to download it and go to update
Hello, I have bought the workcentre 6025. After few copies, I've got an error, that I have to replace the black toner cartridge. I bought the new one and put it there, all was fine, however after the startup, I have the error message Insert black toner... I even tried to put the old empty original one and the message is still there...
What can I do???