Solved: My HP Officejet 8500 keeps displaying that it's cleaning the... - HP Support Community - 2219075
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HOTCOLOR 940 Printheads Replacement for HP Printheads 940 C4900A C4901A for HP Officejet Pro 8500A Plus officejet pro 8500 printhead (2 Black/Yellow 2 Cyan/Magenta,4PK)
How to Fix a Failed Alignment - HP Officejet Pro 8500 Premier All-in-One Printer - video Dailymotion
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