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

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My yellow ink ran out and I finally replaced all inks this evening. Now, with all new inks, I keep getting a message that the yellow needs to be replaced. Any suggestions? I've turned off the printer, reinstalled the printer and it still says the yellow ink is out... I've taken the cartridge out ond put it back in numerous times. I can see the ink is good but can't get the printer to recognize the new cartridge for the yellow. Help! School projects are due and it's important... Thanks so much!

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I had the same problem with mine but I bought a refill cartridge instead of a new one and went through three refilled cartridges when I found that it was that I needed a brand new one. For some reason, the HP printers and some other printers need to know that you are using the same brand of ink as the printer. if it is another brand it wont except it and it wont let you print anything! So make sure it is a brand new hp brand ;)

Posted on Nov 12, 2009

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I have a Brother MFC 3340CN and 1940CN,fax,print,copier I was working fine and then all at one message was yellow out of ink please replace and start again. It has a brand knew yellow ink cartiage in it...


The ink that is given to you when you buy a new machine is not the same as if you went out and bought ink. The "starter" ink cartridges are not filled completely (that is a marketing gimmick to get you to buy more quickly). When you say "NEW" do you mean "new, never been used", or "new, just got it last week"?


If it's never been used, be sure that you have removed the protective tape from that cartridge. If it's been removed then the cartridge its self could have a problem or the machine could be at fault (not correctly reading the ink). You choices are to return it to where you got it, or buy a yellow cartridge and replace it.


If it was working and stopped after a very short time (a week or two) I would get a new yellow and try it.


For your sake I hope it's the protective tape was forgotten, it happens quite often.

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1 Answer

Keeps saying install c


Hello,

When the printer says "install C" it is referring to the Cyan (blue) ink cartridge. If this is not a new cartridge, you might have to replace it. If this is a new cartridge, try following these steps.

1. Unplug the power cable.
2. Remove all 4 ink cartridges.
3. Close the ink cover
4. Plug the power back in.
5. Wait for the machine to warm up and tell you that the ink is empty.
6. Reinsert all 4 ink cartridges.

If you keep getting the same message you should try another cartridge. You can put the yellow cartridge in the blue spot to see if you get the same message. If you get the same message then the machine is broken. If you get a new message then the cyan cartridge needs to be changed.

Thanks,

Pat

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1 Answer

My mfc240c says to replace the yellow ink cartridge but I don't want to spend money on that if the 'light bulb' is ruined. When I turn on the machine, I don't see any light for scanning or copying. ...


By the "light bulb," do you mean the scanner lamp? That lamp should only turn on when you are actually scanning, faxing, or copying a document. You should be able to still use the machine to scan and fax, even with the yellow ink empty. Try scanning a document to see if the scanner lamp comes on.

As far as printing or copying goes, you won't be able to print or copy anything until you replace the yellow ink, even if you try printing in black and white only.

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unplug your printer. then remove the cartridges and reinstall them being sure to seat each one firmly into it's socket. finally plug the printer back in.

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The Ink sensor sounds like it needs to be replaced. This happens from time to time.

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i got something like that too .. it was my yellow ink which was doing it ... at a point i was so fed up that i put another blue cartridge and you know what .. it works ... so it means that the brand new yellow that i bought before was not even good !!! WOW .. way to go Brother !

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1 Answer

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I had the same problem with the yellow cartridge. Yellow quit printing, put in a new yellow and still would not print yellow. I had a help file, don't know where I got it, but it suggested replacing the black ink cartridge also, even though the black wasn't low yet. Replaced the black, ran a few nozzle cleans and everything worked fine. Don't know why. Try it

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