Check with your provider for the supply.
Some cartridge may been a activation code for activating the supply installation code on your device.
Please take a look at this link for all the supplies and part number for your printer.
I need to replace one of the toners for the first time. I ordered it with our provider, they sent me one Xerox Original that is Extra High-Capacity (106R03740) but the printer says it is not compatible. My provider says that the specification of the toner says "Compatible with Versalink C7000 Series".
My question is: Are these toners really compatible with a Printer Versalink C7000?...
I will really appreciate your help.