HP Smart Tank 500 error E4

[Skyhotel]

Our printer shows error E4. But there's no failed paper inside. Before the printer worked well. Then we didn't use it for a few days, but it was been ON all these days. During this time there was electricity surges. Now it shows this error and doesn't work. How to fix it?

[Raj_05]

Hi @Skyhotel,

Welcome to HP Support Community.  

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

Error E4 on HP Smart Tank printers typically indicates a paper jam or a sensor issue. Even if you don't see any paper jammed inside, there could be a small piece of paper or debris triggering the sensor. Here are some steps you can follow to troubleshoot and potentially resolve the issue.

Turn Off and On:

• Turn off the printer and unplug it from the power source.
• Wait for a minute or two.
• Plug the printer back in and turn it on.

Check for Paper Jams:

• Open all the access doors and trays and check for any visible paper jams. Even small pieces of torn paper can cause issues.

Clear Debris:

• Use a flashlight to carefully inspect the inside of the printer for any debris, small pieces of paper, or foreign objects.
• If you find anything, use tweezers or carefully remove it.

Paper Path Check:

• Make sure there is no obstruction in the paper path. Ensure that the paper is properly loaded in the input tray.

Reset the Printer:

• Some printers have a reset button or sequence. Check your printer's manual for instructions on how to perform a reset.

Update Firmware:

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

Check Sensors:

• Inspect the sensors in the paper path to ensure they are not blocked or damaged. Refer to your printer's manual for guidance on sensor locations.

Power Surge Protection:

• Since you mentioned power surges, it's essential to use a surge protector for your printer to prevent electrical damage. If you haven't been using one, consider using it in the future.

I hope this helps. 
 

Take care and have a good day.

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Alden4
HP Support