Hi @paolo8,
Welcome to The HP Support Community.
Thank you for posting your query, I will be glad to help you.
I understand you're dealing with an issue where the printer isn't recognizing some of the cartridges properly, even after swapping the printhead. Here's a set of steps you can try to reset your HP Photosmart B110a printer and hopefully resolve the issue with the cartridges:
Steps to Reset the Printer:
Turn off the Printer:
- Press the power button to turn the printer off. Wait for it to completely power down.
Unplug the Printer:
- Unplug the power cord from the back of the printer. Leave it unplugged for at least 60 seconds. This will ensure a full reset of the printer's memory.
Remove the Cartridges:
- Open the printer's cartridge access door and carefully remove all the ink cartridges.
Re-seat the Printhead:
- Remove the printhead and carefully re-seat it, ensuring it is properly installed and seated. Sometimes a slight misalignment can cause the cartridges not to be recognized.
Reinstall the Cartridges:
- Reinstall the ink cartridges one by one, making sure each one clicks into place securely.
Plug the Printer Back In:
- Plug the printer back into the power source and turn it on.
Perform a Printer Reset:
- Once the printer powers on, check if the display still shows any error messages.
- If the cartridges are not being recognized, try removing and reinserting them again while the printer is on.
Check for Firmware Updates:
- Sometimes the printer can have firmware issues that affect cartridge recognition. You may want to check HP's website for any available firmware updates for your HP Photosmart B110a.
Additional Troubleshooting:
- Ensure Cartridge Compatibility: Ensure the cartridges you're using are compatible with the printer. Sometimes, even genuine HP cartridges can cause issues if they are expired or incorrectly installed.
- Check Cartridge Contacts: Examine the metal contacts on both the ink cartridges and the printhead for any dirt or debris. Use a lint-free cloth or cotton swab lightly moistened with water to clean them if needed.
If these steps don't resolve the issue, there might be a deeper hardware problem with the printer's cartridge detection system or the printhead. However, this reset process should help to clear any temporary errors.
Let me know how it goes!
I hope this helps.
Take care and have a good day.
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