I normally work on HP printers/mfp's. Have a customer that needed transfer belt cleaner replaced. Replaced it and now it keeps saying "insert drum cartridge" for all the colors. I have taken back apart, reinserted all the drums several times and checked for anything out of place. Am I going crazy, seems like it should be fine but keeps coming up with message, worked before I swapped out cleaning unit. Any help would be greatly appreciated. Thanks
Bookmarks