Most likely they are locked out by a region code, ,or via Metered vs Sold
The printer comes in a neutral state, when you purchase and install your first consumable it locks to its designation (Metered vs sold) and dependant on the model and area, possibly to a Region.
Metered = Xerox contracted
Sold = Purchased through Retail
NA , DMO and Asia Pacific
DMO, Dmoso " - includes the marketing, sales and servicing of Xerox products, supplies, and services in (Latin America, Mexico, Brazil) the Middle East, India, Eurasia and Central-Eastern Europe (Russia area) and Africa.
I am from the Cayman Islands. We have a workcentre 6655 in our office and we recently bought some LD Toner Cartridges as replacements. I tried to replace one of the cartridges and got the message on the screen "Black Toner (K) is not compatible". Is there any way that i can troubleshoot this in house?