HP Officejet 4000 Not Printing
Firstly, check if the color ink cartridge is installed and working properly. Open the access door at the top. Raise the access cover of the color ink cartridge. Remove the cartridge from the printer. Check for ink clogs or damage on the cartridge. Replace the cartridge with a new set if it is damaged. If there are any ink clogs found on the cartridge, wipe it using a lint-free dipped in glass cleaner or distilled water. Make sure that the cartridge is HP Officejet 4000 Setup into the respective slot.