problem with the supply system

[WandaC66]

I have an error after changing my black ink cartridge the error states problem with the supply system. Have tried different cartridge, resetting printer running the printhead cleaner... now what?

[Max3Aj]

@WandaC66, Hello and welcome to the HP Support Community!

Thanks for posting your question. I'm here to help you get things back on track.

I understand you're seeing a "Problem with the supply system" error after replacing the black ink cartridge on your HP OfficeJet Pro 7740 Wide Format All-in-One Printer. You've already tried a different cartridge, reset the printer, and cleaned the printhead, great troubleshooting so far!

Let’s try a few more steps to isolate and resolve the issue:

Check Cartridge Authenticity

Make sure you're using genuine HP ink cartridges. Non-HP or refilled cartridges can sometimes trigger supply system errors.

• You can verify cartridge authenticity here: HP anti-counterfeit | HP® Official Site

Power Reset the Printer

A full power reset can sometimes clear internal errors.

1. Turn the printer on.
2. With the printer on, disconnect the power cord from the back.
3. Unplug the power cord from the wall outlet.
4. Wait 60 seconds.
5. Plug the power cord back into the wall and then into the printer.
6. Turn the printer back on.

Clean Cartridge Contacts

Sometimes ink or debris on the cartridge or carriage contacts can cause this error.

1. Open the ink cartridge access door.
2. Remove the black cartridge.
3. Use a lint-free cloth slightly dampened with distilled water to gently clean the copper-colored contacts on the cartridge and inside the printer.
4. Let everything dry for 5 minutes.
5. Reinstall the cartridge and close the door.

Update Printer Firmware

Outdated firmware can cause supply system errors.

• Download the latest firmware for your printer here: Official HP® Support

Try a Different Genuine HP Cartridge

Even new cartridges can be defective. If possible, try a new genuine HP 952 or 952XL black cartridge. Which cartridges work with my HP printer? | HP® Support

I hope the information shared has been useful and resolves your concern.

Wishing you a smooth and hassle-free experience ahead!

If this solution helped, please click “Accepted Solution” so others can benefit too. Don’t forget to hit the “Yes” button if you found this helpful!

Warm regards,

Max3Aj

HP Support