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

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My HP L7780 will not print blue although it has a new cyan cartridge installed. The print head tests okay on the control panel.

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If the machine functions well otherwise ( no errors ) then you should try to run the cleaning function from the printer software. Locate the printer in the printer folder and right-click the icon and select properties. Then select preferences at the bottom of the window, and select the maintainence tab. Select clean, and follow the directions. If you see no improvement after 3-5 cleans, it is more than likely the printhead. Contact HP directly to see about warranty replacement of the printhead. There is a warranty date on the side of the printhead itself. The printhead may also just be prematurely defective, so if out of warranty, try to replace it.

Posted on Sep 29, 2010

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Mine would not print red - -it had a bad printhead.

Posted on Jan 22, 2011

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Ry this:

1. Unplug the power cable of your wireless router(im just assuming you have one, cos that's what causes this issue).
2. Unplug power cable of the printer and plug it back in. Now the printer should start up and it should not freeze.
3. Turn off the wireless radio of the printer by pressing Setup Menu

Posted on Sep 30, 2010

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1 Answer

Printer will not print blue, prints pink instead


Blue is made from magenta (pink) and cyan ( sky blue), if your blues are coming out pink then they are missing the cyan component.

In your machine this could be caused by a blockage in the printhead, the cyan cartridge being empty, an electronics fault, a boma pump fault (the squishy black thing on the base of the cartridge). Check your cartridge first - if it feels lighter than the other it is probably empty. Sometimes there is a fault where the entire contents of a cartridge (usually the cyan) can be emptied in a matter of days or less. If the cartridge is unusually empty compared to the other colours - refer it to HP.

Mar 13, 2015 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

My HP Officejet Pro K550 is not printing the cyan (blue) ink. It has a new cartridge. I've run print quality pages and configuration pages -- no cyan shows up. I cleaned the printheads and no c


Do a test print...
assuming you have done multiple print head cleans... if it fails to print ANY cyan, I'd guess the print head is dead... although to be honest im not an expert with this hp printer. if that is the case, it probably isnt worth repairing.
If it does print some cyan, just missing, you may be able to find info, sorry, I cant help you there, on accessing the service or maintenance mode and doing a higher level clean, if your printer supports that.
As a last option, disassembly and soaking the bottom of the print head in cleaning solution /water... overnight, without getting ANY water on any contacts, then re running print cleans.

good luck

in my exp, again, not with this printer, mind you, if a print head fails to print ANY ink for a given colour, the print head is usually faulty.

Hope this info helps

May 15, 2012 | HP OfficeJet Pro k550 Printer

1 Answer

Hp officejet v40. new cartridge but missing blue when printing


Sounds like your cyan print head is clogged. You can try to get it flowing yourself by rubbing the print head with a wet paper towel. If you press the print head on a dry paper towel you should see three distinct lines of color. If you still don't see the cyan, try letting the print head rest on the wet paper towel on a surface that ink can be cleaned up from or one you don't care about staining. If the cyan still won't flow, you should go back to where you purchased it and return it for a new one.

Jan 12, 2010 | HP OfficeJet V40 All-In-One InkJet Printer

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

After cyan ran out, installed new cartrige. Printer produced everything colored blue as red. Purchased new cyan cartrige and the problem recurred.


The problem seems from your new cyan cartridge.
It doesnt print cyan ink.
Try to clean print head and test print for each color
from the utility menu

Sep 09, 2009 | Epson Stylus CX6000 All-In-One InkJet...

1 Answer

Hp business inkjet 2800 will not print cyan although have replaced cartridge and run all onboard diagnostics. hp troubleshoot shows no problem yet printer will not print


You say you replaced the cartridge but did you replace the print head. If you fully lift the cartridge cover you will see a row of print heads. The Cyan print head is C4811A. Try replacing this.

or

If you feel lucky you can run the print head cleaner diagnostics. The print head may simply be dirty or clogged.

Apr 04, 2009 | HP Business InkJet 2800 Printer

1 Answer

I haven't the manual for this printer color laserJet 2600n series,


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HP Color LaserJet 2600n Printer - Installing Print Cartridges When a print cartridge approaches the end of useful life, the control panel displays a message recommending that to order a replacement. The printer can continue to print using the current print cartridge until the control panel displays a message instructing to replace the cartridge. The printer uses four colors and has a different print cartridge for each color: black (K), cyan (C), magenta (M), and yellow (Y). Replace a print cartridge when the printer control panel displays one of the following messages: Replace yellow cartridge, Replace magenta cartridge, Replace cyan cartridge, Replace black cartridge. The control panel display also indicates the color that should be replaced (unless a genuine HP cartridge is not currently installed). Change the print cartridge
  1. Turn off the printer.
  2. Open the front door. c00315320.gif CAUTION: Do not place anything on the transfer belt (ETB), which is located on the inside of the front door.
  3. Remove the used print cartridge from the printer. c00315321.gif
  4. Remove the new print cartridge from the bag. Place the used print cartridge in the bag for recycling. c00315322.gif
  5. Grasp both sides of the print cartridge by the blue handles and distribute the toner by gently rocking the print cartridge from front to back. CAUTION: Do not touch the shutter or the surface of the roller. c00315323.gif
  6. Remove the orange shipping locks and the orange shipping tape from the new print cartridge. Discard the shipping tape and shipping locks according to local regulations. c00315324.gif
  7. Align the print cartridge with the tracks inside the printer, and using the handles, insert the print cartridge until it is firmly seated. c00315325.gif
  8. Firmly close the front door. c00315326.gif
  9. Turn on the printer. After a short time, the control panel should display Ready.
    NOTE: If a cartridge is in the wrong slot or is the wrong type for the printer, the control panel will display one of the following messages: Incorrect yellow, Incorrect magenta, Incorrect cyan, Incorrect black.
  10. Installation is complete. Place the used print cartridge in the box in which the new cartridge arrived. See the enclosed recycling guide for recycling instructions.
  11. If a non-HP print cartridge is in the printer, check the printer control panel for further instructions.
    NOTE: When replacing or changing a black print cartridge, a cleaning page will automatically print. This helps prevent speckles on the front or back of printed documents. A cleaning page can also be generated using the control panel or the HP Toolbox.

Nov 03, 2008 | HP Color LaserJet 2600n Printer

3 Answers

Printhead Problems


Since buying the L7780 printer for our business office two years ago, the printer has been a work horse for us. The problems I've seen online about scanning, paper jams and ink cartridge issues have been none existent. Then it was time to change the print head. The L7780 printed several pages before the print head error message appeared and the printer ceased printing. We tried all the solutions offered online including another print head and cartridges but to no avail. We were ready to buy a new printer. Then a member our team whom we dubbed “Service Tech 130” came up with the solution. Service Tech 130 simply pried the chips off both print heads with a screw driver and super glued the old chip onto the new print head. Now the printer has been working as if nothing was every wrong.
For this to work for those of you having the same problem, you would have to be in possession of the old print head that worked prior to the error. Attached is an image showing the location of the chip. Hope this works for you as it did for us.9101d4c.gif

Apr 02, 2008 | HP Officejet Pro L7780 All-In-One InkJet...

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