HP Officejet Pro 8620 Fax Print Copy Scan WEB error Missing or Failed Printhead checking, Turn on the printer to see error, On the screen printer alert message "Missing or Failed Printhead" The printhead appears to be missing, not detected, or incorrectly installed, Open the front cover and remove ink cartridge and printhead checking and reinstall back, This printer printhead problem, need new print head for replace #HpOfficejetPro8620errorMissingorFailedPrintheadchecking