I have the HP 7740, replaced all cartridges and a system error appear,

[Janser]

I have the HP 7740, replaced all cartridges and a system error appears. Sometime indicate all cartridges are depleted, or one only. I tried to shutoff the printer, replaced cartridges, but the error still there. Can you help me to solve the problem?  

[Alden4]

Hi @Janser,

Welcome to HP Support Community.

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

I can offer some general troubleshooting steps that might help resolve the issue with your HP 7740 printer.

1. Check Cartridge Installation:

   • Ensure that all cartridges are securely and correctly installed. Make sure they click into place.

2. Clean the Cartridge Contacts:

   • Turn off the printer and disconnect it from the power source.
   • Remove the cartridges.
   • Use a lint-free cloth to gently clean the contacts on both the cartridges and the printer.
   • Reinstall the cartridges.

3. Update Firmware:

   • Check if there is a firmware update available for your printer on the HP website. Updating the firmware can sometimes resolve software-related issues.

4. Reset the Printer:

   • Turn off the printer.
   • Disconnect the power cord from the back of the printer.
   • Wait for a couple of minutes.
   • Reconnect the power cord and turn on the printer.

5. Check for Software Issues:

   • Make sure that your printer software on your computer is up to date.
   • Try printing a test page from your computer to see if the issue persists.

6. Perform a Hard Reset:

   • Turn off the printer.
   • Disconnect the power cord from the printer.
   • Disconnect the other end of the power cord from the power source.
   • Wait for about 1-2 minutes.
   • Reconnect the power cord to the printer and to the power source.
   • Turn on the printer and check if the error persists.

I hope this helps.

Take care and have a good day.

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Alden4
HP Support