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HP OfficeJet Pro 8028 All-in-One Printer
Microsoft Windows 10 (64-bit)

Did a factory reset, made sure all updated firmware and drivers were installed. While powered down reached in and unsnaped all the ink cartridges, they look difficult to reach, but you can reach in with you finger and unsnap the cartridges. Don't push the carrier just reach in with a finger to the front of each cartridge to unsnap. leave unsnapped and power up. you will get  something different now instead of the event code 71.02.4A this time.  Pop the ink cartridges back back down and let the printer complete it's cycle, was back in business and error code was gone. 

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