HP OfficeJet 3840 paper feeds and print head moves but does not print ink on paper.

[TLR6]

I cleaned the print heads twice and pulled both ink cartridges. HP Smart indicates that I have sufficient ink in both cartridges. I shook both cartridges and reinstalled them and again cleaned the print heads. I printed a test sheet and no ink appeared on the paper even though I could hear the print heads moving while attempting to print the test sheet. I earlier attempted to copy a document using the copy feature, but it also would not print in the same fashion.

[Raj_05]

Hi @TLR6,

Welcome to HP Support Community.

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

Here are several troubleshooting steps to resolve the issue with your HP OfficeJet 3840 printer.

Verify Ink Cartridge Compatibility

• Ensure the cartridges are the correct model for your printer.
• Check if the cartridges are genuine HP products, as non-HP or remanufactured cartridges can sometimes cause issues.

Inspect Ink Cartridges

• Remove the cartridges and inspect them for any clogs, leaks, or damage.
• Clean the electrical contacts on the cartridges and inside the printer using a lint-free cloth lightly dampened with distilled water.
• Reinsert the cartridges and ensure they are seated correctly.

Run the Printhead Cleaning Process Again

• Use the printer's software or the control panel to run the printhead cleaning utility multiple times (up to 3 cycles).
• Allow the printer to rest between cycles to avoid overheating the printhead.

Check Printer Settings

• Ensure the correct paper size, type, and print quality settings are selected.
• Perform a printer alignment through the HP Smart app or the printer control panel.

Print a Test Page

• Try printing a diagnostic page or print quality report from the printer menu or HP Smart app. Check if there are any faint lines or patterns indicating partial ink flow.

Perform a Manual Reset

• Turn the printer off and unplug it from the power source.
• Wait 5 minutes, then reconnect and turn it on. This can clear potential temporary glitches.

[Raj_05]

Inspect the Paper Path

• Confirm there are no obstructions or dirt in the paper path that could interfere with ink transfer.
• Ensure the paper used is compatible with your printer.

Update Printer Firmware

• Ensure the printer firmware is up to date. Use the HP Smart app or the HP website to check for updates.

Test with New Cartridges

• If possible, try replacing the cartridges with new ones. Sometimes, even if the ink level shows sufficient, cartridges can fail internally and stop dispensing ink.

I hope this helps.

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Alden4

HP Support 

[TLR6]

Thanks!  HP is sending new ink cartridges.

[Raj_05 · Accepted solution]

Hi @TLR6,

Thank you for your response, 

Is there anything else that I can help you with today?

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Take care and have a great day ahead!

Alden4

HP Support