@angels413, Welcome to HP Support Community,
Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue
When your HP Smart Tank 5100 is not printing, and you see the Attention light on, it usually indicates an error in the printer. Here's a detailed troubleshooting guide to help resolve the issue:
Check Ink and Printheads:
- Make sure that all ink tanks are filled properly.
- Ensure that the printheads are correctly installed and that there's no plastic tape or orange plug left on them.
- Check if the printheads are compatible or damaged. Install any missing printhead securely if required.
Check Paper and Paper Path:
- Verify that there's enough paper loaded in the input tray and that it's aligned properly.
- Remove any jammed paper in the input or output trays if present.
Power Cycling the Printer:
- Turn off the printer and unplug it from the power source. Wait for about 60 seconds before plugging it back in and turning it on.
Identify the Error:
- The Attention light might be accompanied by an error code. Identify any error code displayed on the printer's control panel and refer to HP Printer Error Codes and Blinking Lights for specific troubleshooting steps.
Perform Printhead Cleaning:
- You can perform a printhead cleaning using the HP Smart app or directly from the printer’s control panel to resolve any print quality issues that might be causing the printer not to print.
I hope this helps.
Please feel free to reply here if you have any questions or if you need further clarification on any of the steps.
Take care and have a good day.
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Regards,