SOLVED: Printhead appears to be missing not detected or incorrectly installed - HP Officejet Pro 8620 - iFixit
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Buy Original HP 950 Black/951 Cyan, Magenta, Yellow Ink Cartridges (4-pack) | Works with HP OfficeJet 8600, OfficeJet Pro 251dw, 276dw, 8100, 8610, 8620, 8630 Series | Eligible for Instant Ink | X4E06AN Online in Vietnam. B079GZWZ33
![HP 950, 950XL, 951, 951XL: Alignment Failed, Printer Failure or Ink System Failure Errors | INKJET411 HP 950, 950XL, 951, 951XL: Alignment Failed, Printer Failure or Ink System Failure Errors | INKJET411](https://www.inkjet411.com/wp-content/uploads/2013/02/000_HP-950-951-Chip-Lockout-Errors.jpg)