problem with supply system

[mac226]

officejetpro 8720 problem with suppl

[Gaya1239]

Hi @mac226,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand issues with the supply system on an HP OfficeJet Pro 8720 could indicate a problem related to ink cartridges, the printhead, or internal mechanisms managing the ink flow. Here are some steps to identify and resolve the issue:

1. Understand the Problem

• Is there an error message on the printer (e.g., “Cartridge problem,” “Supply system error,” or similar)?
• Are prints blank, streaked, or uneven?
• Is there any visible damage or leaking ink in the cartridge area?

2. Check the Ink Cartridges

• Use Genuine HP Cartridges: Ensure that you are using authentic HP 952, 952XL, 956XL, or compatible ink cartridges.
• Inspect Cartridges: Remove the cartridges and check for:
  • Damage to the plastic body or nozzles.
  • Expired cartridges (check the expiration date on the label).
• Clean the Contacts: Use a lint-free cloth lightly moistened with distilled water to clean the electrical contacts on the cartridges and printer.
• Reinstall the Cartridges: Properly reseat them in the printer.

3. Run a Diagnostic Test

• From the printer’s control panel, navigate to Settings > Printer Maintenance > Print Quality Tools.
• Run the Clean Printhead or Align Printhead tools.
• Print a test page to evaluate print quality.

4. Inspect the Printhead

• Clogs: If print quality issues persist, the printhead may be clogged. Use the printer's cleaning tools multiple times.
• Manual Cleaning: If automated tools don’t resolve the issue, clean the printhead manually using distilled water and a lint-free cloth.
• Reseat or Replace the Printhead:
  • Open the printhead latch and remove the printhead.
  • Reseat it firmly or replace it if damaged.

5. Perform a Printer Reset

• Turn off the printer and unplug it from the power source.
• Wait for 60 seconds, then plug it back in and turn it on.
• Check if the issue persists.

6. Update FirmwareUpdate the firmware on an HP printer

• Ensure the printer firmware is up to date. You can update it via the HP Smart app or from the printer’s control panel.

7. Check for Internal Issues

• Look for any ink leaks or blockages inside the printer.
• Clean the area where the cartridges and printhead sit.

Refer to this document: HP OfficeJet Pro 8720 All-in-One Printer series User manual

HP Printers - An 'Ink System Failure,' 'System Supply Problem' or 'Supply System Problem' Error Disp...

I hope this helps. 

Take care and have a good day.

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