It sounds frustrating, but here are a few things you can try to fix the issue with your HP Officejet 4620:
- Check for Clogs – The ink cartridge could be clogged. Run the printer's cleaning cycle (usually found in the printer settings under "Tools" or "Maintenance"). This will help clear any blockages in the printhead.
- Reinstall the Cartridge – Sometimes the cartridge doesn’t seat correctly. Remove the black ink cartridge, then reinstall it firmly to ensure it’s properly in place.
- Printhead Cleaning – If the automatic cleaning doesn’t work, you can manually clean the printhead. Gently wipe the printhead area with a soft, lint-free cloth moistened with warm water.
- Check Cartridge Chips – The cartridge might have a faulty chip, which can prevent it from communicating with the printer. Try using a different black ink cartridge to see if that resolves the issue.
- Check for Software/Driver Issues – Sometimes, the problem could be related to your printer’s software or drivers. Ensure you have the latest printer drivers installed, or try uninstalling and reinstalling them.
- Align the Cartridges – In the printer settings, there’s an option to align the printheads. Running an alignment might help fix printing issues.
If none of these work, there could be a more serious issue with the printer’s printhead, and you might need to contact HP support for further assistance or consider servicing the printer.