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‎01-24-2023 04:22 AM

HP Recommended
Product: HP OfficeJet Pro 8720 All-in-One Printer

I have an HP OfficeJet 8720.  I recently got an error message which said:  “There is a problem with the supply system.”  The message seemed related to the yellow ink cartridge.  I have tried all of the recommended fixes.  I updated my firmware.  I installed new HP ink cartridges in all applicable slots.  I removed, inspected and cleaned the entire printhead.  I restored all factory settings.  I unplugged and rebooted the printer in every way possible.  Nothing works.  Any other suggestions would be most welcome.  I hate to throw away a perfectly good printer.  However, right now, the printer is completely locked down.  I cannot print anything.  I cannot align the printhead in settings.  I cannot clean the printhead in settings.  Even though all of the ink cartridges are brand new HP products, the printer now says that all of the cartridges are out of ink.  Many thanks for any advice.

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