I replace the main and engine PCB's and Hard drive in this copier with the boards and hard drive out of a KM 5530. When I try to use a function such as duplex and/or sort the message " These functions cannot be combined " comes up. I've checked user tools and can't see anything that would cause this. Is it to be found in simulations??? I believe this was happening before I replaced the boards and hard drive. Thanks!!!
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