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HP 7520 printer not registering newly installed printhead

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HP 7520 PhotoSmart
Microsoft Windows 10 (64-bit)

I had to replace the printhead in my hp 7520 system is not acknowledging the new printhead when I look at printhead info it shows the old head info and that it is bad.  How can I manually updated the system?


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Hi @pjmacd19,


I'd like to help!


I understand you are receving a printhead error with the new printhead


Try the below suggestions -


Replacing the printhead


Replace the printhead to resolve print quality problems that do not go away after replacing ink cartridges.

  1. With the printer on, open the ink cartridge access door, and then wait until the carriage stops.

    Opening the ink cartridge access door

  2. Remove each ink cartridge by pressing the front tab, and then lifting the cartridge.

    Pressing the front tab, and then pull up to remove the ink cartridge

  3. Lift the carriage latch handle to unlock the printhead.

    Lifting the carriage latch handle

  4. Grasp the sides of the printhead, and then lift up to remove it.


    To avoid ink stains, do not touch the bottom of the printhead.

    Removing the printhead

  5. Place the printhead on a sheet of paper, and then set aside.

  6. Using the pre-moistened wipes that came with the replacement printhead, clean the electrical contacts inside the carriage from top to bottom, wiping in the down direction only.


    Do not wipe up or side to side. This can damage the electrical contacts.

    Cleaning the electrical contacts inside the printer

  7. Remove the replacement printhead from the packaging.


    Do not touch the electrical contacts or nozzles to avoid damaging them.

    Do not touch the electrical contacts or nozzles on the printhead

  8. With the electrical contacts facing the rear of the printer, insert the printhead into the carriage.

    Inserting the printhead into the carriage

  9. Close the carriage latch.

    Lowering the latch handle on the carriage

  10. Install the new cartridges that came with the replacement printhead, and then close the ink cartridge access door.


    Do not reuse the ink cartridges from the previous printhead. Old cartridges can damage the new printhead.

  11. If prompted to align the cartridges, select OK on the printer control panel.

    The printhead is installed, and the printer is ready for printing.

If the issue persists, I'd suggest you Contact HP in your region regarding the service options for your printer


Hope this helps! Keep me posted. 


And, Welcome to the HP Support Community. 


Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

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