We purchased a new WorkCentre 6515 (November 2019); this was a replacement to a previous 6515 machine. Just tried to replace a toner cartridge and got the error message "incompatible".
HOWEVER, this cartridge was removed from the previous 6515 machine where it worked just fine.
How can we fix this?
Usually that message means you have a metered cartridge in a non-metered printer, or vice versa. You can try checking this by comparing the part numbers on each. Or you can call Support and they can walk you through the steps. The contact options for your device are listed here.