The machine is a design jet 5500, and a little over a year ago, I did a service and changed the belt, all the printheads and ink. They have barely used it since. Well they wanted to use it and it kept saying to insert the black dye. The dye was still full. They could not get the message to go away so they changed all the dye's. The ones they put in were regular and I had the machine set up for UV. Now the machine will not recogonize any of the dye's. Can anyone tell me what has happened. I had planned to change the ink tube system for the loose slots the dyes are in. I was guessing the machine was trying to stop the operator from mixing dyes.