Hi @mi730,
Welcome to HP Support Community.
Thank you for posting your query, I will be glad to help you.
It sounds like your HP Smart Tank 515 has a persistent paper feed/ejection issue, possibly related to the rollers or firmware. Since you've already sent it for servicing and the problem remains, try the following troubleshooting steps.
Clean the Paper Feed Rollers
- Turn off the printer and unplug it.
- Open the rear access door and check for any jammed paper.
- Clean the rollers with a lint-free cloth slightly dampened with distilled water.
- Let it dry completely before closing the panel and restarting the printer.
Adjust the Paper Settings
- On your HP Smart app or Mac, check that the paper size and type settings match the paper you’re using.
- Try changing the print quality settings to Normal or Best instead of Draft to see if it affects ejection.
Check for Firmware Updates
- Update your printer’s firmware via the HP Smart app or the HP website. Sometimes firmware updates fix mechanical issues.
Perform a Power Reset
- Turn off the printer and disconnect it from power for at least 60 seconds.
- Plug it back in, turn it on, and try printing again.
Try Printing from Another Source
- If you mainly print from a mobile device, test printing from your Mac or a Windows PC to see if the issue persists.
Test with Different Paper
- Try a different brand or type of paper, ensuring it's within HP’s recommended specifications (e.g., standard 75-80 gsm A4).
I hope this helps.
Take care and have a good day.
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Max3Aj
HP Support