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

3 Answers

Alignment failed refer to device documentation hp L7780

Yellow cartridge ran out, replaced it with new and since then black is not printing if it does its very faint and missing lines of print. help!!

no help in documentation!

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You need to remove the black/yellow printhead and dab it on a damp paper towel until you see a solid line of black ink on the towel when you press it. It won't pass the alignment until all colors work properly.

Posted on Nov 19, 2009

Testimonial: "Tried that, unfortunatley not solved my problem argh!!"

  • Craig Gillette
    Craig Gillette Nov 20, 2009

    The other thing that helps alignment is cleaning the encoder strip. The clear strip that runs behind the carriage assembly. A damp Q-tip can help remove ink and grease spots and on the right of the carriage at the bottom is a sensor that looks down at the paper also use a q-tip to clean the led and lens.

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WASH THE PRINT HEAD IN WARM WATER. I REPLACED MY YELLOW LAST WEEK, THEN BLACK STOPPED WORKING. I WASHED THE HEAD IN WARM WATER (JUST THE NOZZLES) AND NOW IT WORKS GREAT. MACHINE IS A LEMON....

Posted on Dec 15, 2009

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I have to ask this if only to rule this out.

Are you using a factory new ink cartridge?
Please consider the following:
If you are using a refilled or third party cartridge that may well be your problem. Most manufacturers build logic into their products to prevent the use of “Other Equipment Manufactured” cartridges as well as re-filled cartridges.
They do this to prevent problems from contaminated inks causing problems with print quality or damaging the physical printhead.
If you are using factory new cartridges, then please call the manufacturers Technical Support for assistance with the warranty on the cartridges
Don

Posted on Nov 19, 2009

  • blue Oct 12, 2011

    The "they do this" part is bs. They have logic to prevent other manufacturers because the whole profit margin is in ink cartridges. That's why they practically give the printers away - to lock you into their ink.

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1 Answer

Allignment failed


Defects to align the cartridges tend to happen when the scanner can not detect the page. Check the scanner and see if it is working properly.

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I can print a Self-Test page, but it only prints in Magenta, I cannot get it to print in Black. I just replaced the Black & Yellow cartridges, but I still cannot get anything to print in Black. I am...


First, make sure that the new cartridges are hp ones, and then make sure the tape is removed. I've done this before by accident, where I put a new cartridge in and it had the tape on it and didn't get output that way.

If you still have problems after trying the above steps, maybe try the following link:

http://h71036.www7.hp.com/hho/cache/427347-0-0-225-121.html

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When I print, the black ink skips or sometimes doesn't print anything. I put in a new cartridge (no improvement), manually cleaned printer head, tried to manually align printer and it says alignment...


unless you are printing and choosing black only, the printer uses the color cartridge also. Go into advanced settings and choose black only. If not you may try and replace the color cartridge, or return the cartridge, it might be defective.

Jan 15, 2011 | HP OfficeJet K80 All-In-One InkJet Printer

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HP Officejet Pro L7780 has stopped printing in black after changing yellow cartridge. Black is barely showing in spots. Have cleaned the heads and restarted twice and black cartridge is almost new, at...


I have to ask this question of you, just to make sure this is not an issue. Are you using a factory new ink or toner cartridge?
Please consider the following:
If you are using a refilled or third party cartridges that may well be your problem. Most manufacturers build logic into their products to prevent the use of “Other Equipment Manufactured” cartridges as well as re-filled cartridges.
They do this to prevent problems from contaminated inks or toner causing problems with print quality or damaging the physical printhead or photo conductors.
If you are using factory new ink or toner cartridges, then please call the manufacturer’s Technical Support for assistance with the warranty on the cartridges
Don

Feb 18, 2010 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Only prints in yellow color


The printer must be able print all colors in order to execute the alignment. Part of the alignment process involves scanning printed colored (all colors including yellow) bars. See the web page below for a sample of the printout. I suggest that you clean the carriage and cartridge electrical contacts with a cotton swab moistened with water. If you still fail to get yellow, test the cartridge in another printer. ping me for the make of printer, anyways if it an HP series refer to the website below
http://h20015.www2.hp.com/en/document.jhtml?lc=en&docName=bpu00657

May 01, 2009 | Computers & Internet

1 Answer

HP officejet pro l7680 all in one


Most likely the print head has failed and the black is not printing which is causing the printer to have issues. Talk to HP as I guess printheads have warranty or simply change the yellow/black printhead. Or if all of these fail give the machine to HP to get you a new one as this is not right. I hope this helps.

Nov 18, 2008 | HP Officejet Pro L7680 All-In-One Printer

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