Hi @windows_mss,
Welcome to the HP Support Community!
Thanks for reaching out about your query regarding error message on your printer!
We're thrilled to have the opportunity to assist you and provide a solution.
The 0x6100004a error on the HP Officejet Pro 6978 typically indicates a paper feed mechanism jam or carriage stall.
Try these advanced fixes to resolve the issue:
Perform a Hard Reset
Sometimes, a hard reset can clear internal printer errors.
- Turn off the printer and unplug the power cord from the wall outlet.
- Wait for at least 2-3 minutes to let the printer fully discharge.
- Press and hold the Power button for 15 seconds while the printer is unplugged.
- Reconnect the power cord directly to a wall outlet (not a surge protector).
- Turn the printer back on and check if the error persists.
Manually Move the Ink Carriage
If the ink carriage is stuck, the printer won’t function properly.
- Turn off the printer.
- Open the ink cartridge access door.
- Gently move the ink carriage left and right to check for any obstruction.
- Remove any jammed paper, debris, or ink buildup.
- Close the access door and restart the printer.
Check for Paper Jam (Even if You Don’t See One)
Even a tiny piece of paper can trigger the error.
- Turn off the printer and unplug it.
- Remove the paper tray and check for hidden paper bits.
- Open the rear access door and inspect for paper fragments.
- Gently rotate the rollers inside to remove any stuck paper.
- Plug the printer back in and restart.
Clean the Paper Feed Rollers
If the printer is trying to pull paper but failing, the rollers might be dirty.
- Turn off the printer and unplug it.
- Open the paper tray and locate the rubber rollers inside.
- Use a lint-free cloth dampened with distilled water to clean the rollers.
- Let them dry for 10 minutes, then restart the printer.
Reset the Printer to Factory Defaults
If the error is caused by a firmware issue, a factory reset may help.
- On the printer's control panel, go to Setup > Printer Maintenance.
- Select Restore > Restore Factory Defaults.
- The printer will restart—check if the error clears.
Update or Reinstall the Printer Firmware
If the issue started after a firmware update, try reinstalling the firmware.
- Go to HP’s official website.
- Enter OfficeJet Pro 6978, download the latest firmware update, and install it.
- Restart the printer and check if the error disappears.
Let me know if any of these worked for you! 😊
I'm glad I could help! 😊 If this resolved your issue, please mark it as "Accepted Solution" and click "Yes" on "Was this reply helpful?"—your feedback not only keeps us going but also helps others find the solution faster! 👍✨
Take care and have an amazing day ahead! 🚀
Best regards,