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

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Hp l7780 all in one

Just replaced my color cartridges, printer shows them full. Magenta does not print

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  • lferry Dec 19, 2008

    Hi I have the same problem only with the black!! Help!!

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I just purchased a hp officejet pro L7780 all in one wireless trying to set up system - was suppose to have a poster sheet to guide me -- NO GUIDE POSTER - can i view one on line somewhere at no cost -

Posted on Nov 23, 2008

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Officejet pro l7780 not printing


OfficeJet 7880 Not Printing


A little more information would have been helpful in troubleshooting this problem. Did the printer ever work correctly? Did it just start printing yellow lines one day? Has it been out of use for a long time or, did you buy it in this condition. Also, is your computer a Windows PC or a Mac and which version of the OS are you using?


If you don\'t have the manual, you need to download one. I saw a link in a previous post or you can go to HP.com. The manual is crap as far as troubleshooting but it has all the part numbers of ink cartridges and printheads.


From the skimpy info you have supplied, I am going to assume there is something wrong in the ink supply system.


1. First you need to print a test page to find out if anything other than yellow can get to the paper. Find the HP Printer Utility. Again, not knowing what computer and OS you are using, I can\'t give you any explicit info. On Windows you might find something in Control Panels>Printer or under Programs you might find the HP Printer Utility. On a Mac maybe System Preferences>Printers or Go>Applications>HP Control Center.


2. If it only prints yellow boxes, or yellow boxes with streaks, you can run the Clean Printheads utility and reprint the test page. If you get more yellow or other colors start to show up, this indicates there\'s something wrong in the whole ink supply chain.


The HP 7xxx printers use the CYMK color system and have separate ink cartridges for each color: cyan, yellow, magenta, and black(K). In addition, the printheads are separate from the ink cartridges: yellow/black printhead and cyan/magenta printhead.


3. The problem could be in the ink cartridges or the printheads, or both. If the printer has been sitting for a long time, the ink will gel and clog up the whole system. Check the ink cartridges first. Are all four of them installed? Are they HP brand? Take them out one at a time, shake them and the reinstall them. Print another test page. Did anything change?


4. If more colors are printing, even with streaks, you should probably replace all the cartridges with GENUINE HP cartridges that are not expired. This could cost you $50-$60 on an eBay purchase but if you buy non-HP, or expired cartridges, you will not be a happy camper, long term. If you want to do this on the cheap, buy a black cartridge and see if you can at least start printing text. If you\'re making progress, you can buy the color cartridges later.


5. If replacing the cartridges fixed the problem, you\'re home relatively "free". If you have to replace either or both of the printheads, this can be expensive. They can run from $50-$100 each, so you\'ll have to make a decision on how much you want to spend on a printer that sold for $175 at Costco 6-7 years ago. Don\'t get me wrong, this is one of HP\'s better print engines but you will have to make an economic decision based on how much it\'s going to cost to bring this printer back to life. You can probably pick up a used 7xxx printer on Craigslist for $50-$75.


Hope this helps.

Sep 22, 2014 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Magenta not printing cartridge color


Hi, try to open the color cartridge compartment and check if the head of the cartridge is making contact with the filter

Dec 10, 2013 | HP Laserjet Cp2025n Printer

2 Answers

HP CM1015 - stil works; Magenta does not print even though full


The magenta might have been freezed, change the magenta.
Thanks.

Jun 19, 2012 | HP LaserJet CM1017 MFP All-In-One Color...

2 Answers

I JUST NEED ORDER NUMBERS FOR ALL THE COLOR LASERJET CARTRIDGES FOR CP4525 PLS. THANKS,


You can find the user's guide here which lists all the parts and supplies. Here's the cartridge information from the manual:
  • HP Color LaserJet black print cartridge Standard black cartridge CE260A
  • HP Color LaserJet black print cartridge High-capacity black cartridge for CLJ4525 models only CE260X
  • HP Color LaserJet cyan print cartridge Cyan cartridge CE261A
  • HP Color LaserJet yellow print cartridge Yellow cartridge CE262A
  • HP Color LaserJet magenta print cartridge Magenta cartridge CE263A
You can use the HP numbers to look for original or after-market replacements.

Apr 29, 2011 | Printers & Copiers

2 Answers

My boss want to replace the black ink cartridge for one that prints color. Can this be done with the HP 12-a cartridges? HP Laser jet 1022


Unfortunately laser printers don't work this way. The laserjet 1022 was designed for black and white prints only. In order to do color printing with a laser printer you will need to purchase one that is designed to print in color. The laser printers work a bit differently than the inkjets - the laser printers have 4 toner cartridges, one each for Cyan, Magenta, Yellow, and Black, that work together to print a full color page. With the old inkjets you could just replace a black cartridge with a color one.

So, short answer: Sorry but no you can't make a laserjet 1022 print in color. :)

I would recommend looking at an entry level color laser printer from hp, such as the CP2025 (http://h10010.www1.hp.com/wwpc/us/en/sm/WF25a/18972-18972-3328060-15077-236268-3673580.html) if you are looking into purchasing a color laserjet.

Hope this helps

Please rate this post, thanks!

Mar 09, 2011 | HP 645A Magenta Toner Cartridge (C9733A)...

1 Answer

We use HP Color Laserjet CM1017; Magenta color is not printing


Dirty laser unit - needs (careful) cleaning internally.

See ' Printing Weak Magenta', 'Printing Light Magenta' for HP CM1015, HP Color Laserjet 1600, 2600, 2605.

All the same laser unit

Apr 14, 2010 | HP LaserJet CM1017 MFP All-In-One Color...

1 Answer

Insert HP color inkjet print cartridge 99 into HP OfficeJet 7410 I am replacing the HP 97 color print cartridge with th 99 print cartridge (both are color). The 99 will not go in all the way. I notice the...


The HP 99 cartridge is used if you would like to print photos. The HP 99 replaces the HP 96 (black) cartridge in your printer. The HP 99 cartridge has black, photo magenta, and photo cyan inks in it. When you pair this with the cyan, magenta, and yellow in your HP 97 (color) cartridge you have the full set of photo colors represented.

Jan 13, 2010 | HP OfficeJet 7410 All-In-One InkJet...

1 Answer

My cyan cartridge shows as empty. My black


No. You need all the cartridges installed with functioning chips for your printer to work. The reason why you need all the colors when all you print is black is because a small amount of color prints when you print black. The manufacturers want to make up their R&D costs on the printers by selling lots of expensive ink.

Nov 25, 2009 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

The magenta cartridge shows to be about 3/4 full, but does print


HP put chips in there cartridges to stop you from interchanging cartridges from printer to printer.

Oct 10, 2009 | HP Color LaserJet 3500 Printer

1 Answer

The lt magenta and magenta just quit printing between pages


1. Check if the cartriges are correctly installed:
Installing the Ink Cartridges

2. Print a diagnostic page and clean print heads, using the printer cleaning utility:
Color Mix or Missing Colors on the Diagnostic Page
Repeat if needed.

3. If this still doesn´t solve you problem, try resetting the printer and manually cleaning the cartrigdes as advised in this FAQ:
Ink Cartridge is Missing, Incorrectly Installed, or Not Intended for Your Device' Error Message is Displayed on the Printer

Sep 06, 2009 | HP Photosmart C6180 All-In-One InkJet...

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