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‎08-12-2020 02:10 PM - edited ‎08-12-2020 02:11 PM

HP Recommended
Product: M880
Operating System: Microsoft Windows 10 (64-bit)

OK I am working on an M880. It exhibits a mottled Yellow back ground on all color documents. No problems with  Mono Chrome (Black and White such as Config sheets). I Upgraded the FW, Performed a Cold Reset, Replaced the Yellow Drum, Replaced the HV Board, Performed a Laser blocking (interrupted/Blocked  yellow laser  with a piece of paper). Cleaned the drum and toner contacts, cleaned the HV "springs and contact points) Still have yellow back ground. I am awaiting a new toner and drum to change them both at the same time. Any ideas (controller board?).

David

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