Malfunction detected error code c 001a on minolta bizhub c350

Im thinking either it was moved improperly and the image units werent kept level, or maybe just sitting to long caused them to settle in. try (gently) removing the IU's and shaking them (keep them level) in order to unclog or redistribute the developer inside. (imagine sand in a horizontal tube. It has to be uniform all the way accoss the tube, and not settled into any one location)