HP Office Jet Pro 7740 Supply System Problem

[nani1305]

Our printer was first doing maintenance between pages in a print job this morning, then said one of the ink cartridges were low. We replaced it only to get a new problem.

The magenta keeps giving this error message "There is a problem with the supply system. Try replacing the affected cartridge with a different, non-empty cartridge." Which we did, with fresh new HP ink straight from the store, only to keep receiving this error message. We've tried restarting the printer, replacing the cartridges, and even cleaning around the print head as you can see there is magenta all over. We've tried all the solutions found in other posts but no dice.

Also noticed that since we replaced all the cartridges this morning, they show not full despite not printing anything since, due to the above error. Why is the printer eating up the ink? The cyan and yellow are near empty after being replaced this morning.

error messagecartridgesprint headbrand new cartridges now low

[zoey7886]

@nani1305, Welcome to the HP Support Community!  

Thanks for reaching out about your query regarding HP OfficeJet Pro 7740 Supply System Problems! 

We're thrilled to have the opportunity to assist you and provide a solution.  

It seems like you're encountering a "supply system problem" error with your HP OfficeJet Pro 7740, specifically related to the magenta cartridge. This is a common issue and can sometimes be resolved with a few troubleshooting steps:

Reinsert the Cartridge: Remove the magenta cartridge and inspect it for any visible damage or remaining protective tape. Then, reinsert it securely into its slot. Ensure it's seated correctly.

Use Genuine HP Cartridges: Ensure that you are using genuine HP ink cartridges, as non-HP cartridges can sometimes cause errors or may not function properly with your printer.

Clean the Cartridges and Contacts:

• Turn off the printer and disconnect the power cord.
• Open the cartridge door and remove the magenta cartridge.
• Use a lint-free cloth slightly moistened with distilled water to gently clean the electrical contacts on the cartridge as well as in the printer.
• Allow them to dry for a few minutes before reinserting the cartridge.

Reset the Printer:

• Turn off the printer and unplug the power cord.
• Wait for about 60 seconds.
• Reconnect the power cord and turn on the printer.

Check for Firmware Updates: Ensure your printer’s firmware is updated to the latest version. Outdated firmware can sometimes cause issues with newly installed cartridges or other printer components.

Replace the Cartridge Again: Although you've already tried a new cartridge, it's possible that both the original and the replacement were faulty. If possible, try another new cartridge.  

Hope this helps! 

Take care, and have an amazing day!  

Did we resolve the issue? If yes, Please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!  

Regards, 

[nani1305]

Unfortunately, we tried all those steps with no success. We deduced there might be an issue with the print head itself as each (genuine HP) magenta cartridge that was inserted ended up splattering everywhere in the print head. But thank you for the quick response!

[zoey7886]

Hey @nani1305, 

Thanks for getting back to us — I’m really sorry to hear those steps didn’t work and that the magenta ink is still causing trouble.

Given what you've described — especially the repeated ink splattering and the supply system error with genuine cartridges — it does sound like the printhead may be the root cause here. When a printhead gets clogged or damaged, it can misread ink levels or fail to distribute ink properly, leading to the exact issues you're seeing.

Take care, and have an amazing day!  

Did we resolve the issue? If yes, Please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!  

Regards,