On my HP Officejet Pro 8620 I'm getting a printhead error...printhead , not detected, or incorrectly installed
Thank You for contacting HP.
Open the Top Cover of the Printer while it is Powered on to see the Cartridges and Printhead.
The Cartridge comes to the left after some movement.
Lift the White/gray latch at the right side of the Cartridge.
Remove the Print Head along with the Cartridges.
At the Rear of the Printhead there will be Copper Contacts.
Clean the Electrical Copper Contacts using lint free cloth and water, leave for drying for 2 to 3 minutes.
Ensure the extra water from the cloth is squeezed before you clean.
Then remove each cartridge one by one, there will be golden chip on each cartridge.
Clean the chips the same way and ensure to leave for drying then install the cartridge back.Do it one by one for each cartridge.
Then Install the Printhead along with the cartridge and lower the latch.
Power off and power on the printer to see if the error is gone or remains.
If the error remains, then again remove the Printhead along with the cartridges. Lower the cover, Re-open the cover and install the Printhead back. No need to clean this time.l
Check the results.
Try this for a 3rd time if needed.
If the issue remains then check the ink levels and replace any empty cartridge.
Although I am an HP employee, I am speaking for myself and not for HP.
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