Question about HP Officejet Pro L7780 All-In-One InkJet Printer

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Printhead problem (black/yellow) on HP L7780

A piece of paper jammed in the machine which I extracted, but now I get the error message "The following printhead(s) has a problem: black/yellow. Can't get it to go away and don't know what to do. Help!

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  • stephaniem16 Jan 14, 2009

    I was setting up my brand new HP 7380. It printed the first test pages ok and then when I went to print something else I got a paper jam which I cleared and then got the same error message "printhead problem with black/yellow. I removed the printhead and put it back in pressing firmly etc and then I got the same message only now the magenta/cyan has the same problem. When I look at the status of the printheads they are both showing a red dot. It won't clean or align or do anything at all! Also tried turning if off and unplugging power. To no avail.



    Steph M

  • BWT-GUY Mar 05, 2009

    Paper Jam followed by the Printhead Problem - Yellow/Black

  • devo80109 Mar 07, 2009

    I've replaced all of the cartridges correctly and it still says that my M/C printhead has a problem. How often do these need to be changed?

  • dvandy Mar 13, 2009

    I had the same thing happen -- paper jam-- then black/yellow (K/Y) printhead message

  • Anonymous Mar 23, 2009

    is there any fix? maybe I have damaged the head somehow - is it Not worth repair etc

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When you removed the paper it's possible your damaged it and that's why the message is not going away. Did you try to put the cartridge back in to make sure it had not come out of position and just remove the power cord for a minute then plugging it back it.

Here are the steps to make sure you properly change the cartridges and the heads...

Install the ink cartridges and printheads Step one: Install the ink cartridges All four ink cartridges must be correctly installed for the HP All-in-One to work. Follow the steps below to Install cartridges:

  1. Open the ink cartridge cover.
  2. Remove each ink cartridge from its package.
  3. Align each ink cartridge with its color-coded slot and then insert the ink cartridge into the slot. To ensure proper contact, press down firmly on the cartridges until they snap into place.
  4. Close the ink cartridge cover.
Figure 1: Installing cartridges printhead problem (black/yellow) on HP L7780 - c00841893.gif 1 - Open the ink cartridge cover. 2 - Remove the ink cartridges from the packages. 3 - Install the ink cartridges. 4 - Close the ink cartridge cover. Step two: Install the printheads Follow the steps below to install the printheads.
  1. Open the top cover of the printer. Figure 2: Open the top cover c00848391.gif
  2. If the carriage does not move to the left automatically, press and hold thprinthead problem (black/yellow) on HP L7780 - c00847980.gife button (c00847980.gif ) for three seconds. Wait for the carriage to stop moving.
  3. Remove the cardboard coverprinthead problem (black/yellow) on HP L7780 - c00848392.gifnthead carriage. Figure 3: Remove the cardboard cover c0084printhead problem (black/yellow) on HP L7780 - c00848393.gifss=
  4. Lift the printhead latch. Figure 4: Lift the printhead latch c00848393.gif
  5. Before installing a printhead, shprinthead problem (black/yellow) on HP L7780 - c00847983.gifhead up and down at least six times while the printhead is still in its packaging. Figure 5: Shake the printhead while it is still in its packaging c00847983.gif
  6. Remove the new printhead from its package, and then remprinthead problem (black/yellow) on HP L7780 - c00847984.gife protective caps. CAUTION: Do not shake printheads after the caps are removed. Figure 6: Remove the printhead from its packaging, then remove the orange caps from the printhead c00847984.gif
  7. Figure 7: Insert the printheads in the correct color-coded slots c00847985.gif
  8. Pull the printhead latch all thprinthead problem (black/yellow) on HP L7780 - c00847987.gif, and then press down to ensure that the latch is properly engaged. You might have to apply some pressure to engage the latch. Figure 8: Close the latch c00848394.gif
  9. Close the top cover. Figure 9: Close the top cover c00847987.gif
Step three: Align the print heads Whenever you insert or replace a printhead, the printer automatically aligns the printheads to ensure the best print quality. If the printer does not print the alignment page automatically, start the alignment process manually. To start the alignment process manually:
  1. Press the Setup button on the control panel Setup and the number 6 on the keypad or scroll to Tools .
  2. Press 4 on the keypad or scroll to Align Printer . The alignment process starts.

Posted on Dec 01, 2008

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How to change the print heads on the HP all in one 7780

Posted on Dec 20, 2008

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Call HP. Stay on the phone for about an hour. Try their solutions. After that they will replace the printer.

Posted on May 18, 2009

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May sound awful, but if you put a paper towel or two between your mouth and the printer head (where the link comes out) and **** it will work. Will bet money on this! Let me know if this works 4 u

Posted on Nov 09, 2011

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Posted on Jan 02, 2017

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