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Replace Ink and Toner

Replacing Cartridges and the Printhead - HP Officejet Pro L7780 All-in-One Printer

Learn how to install and replace the printhead and cartridges on the HP Officejet Pro L7650, L7680, L7750, or L7780 All-in-One printer. The model shown is the HP Officejet Pro L7780 All-in-One Printer.