Are you facing issues like “HP 6830 Printhead Failure, “HP 6830 Problem with printhead“, “Ink System Failure” or “0xc19a0020” in your HP Officejet Printer? this typically indicates there is an electrical problem with the internal PRINTHEAD or with PRINTHEAD connectivity. https://www.errorsdoc.com/hp/fix-hp-officejet-pro-6830-printhead-problem-replacement-clean-printhead/