I have a problem with another one our machines. It seems that the machine cannot pick up the toner every time we try to install it. It will read installing toner and then just stops and says add toner. But these are new toner cartridges. I have cleaned the sensors and even tried changing the motors, but no difference. When I checked the command centre for the machine, all the toner cartridges are shown and even the percentage of toner left in them. Has anyone faced this problem before.