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

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My printer says " Printheads have a problem' and it's both print heads. What do I do?

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Remove the drivers ... install the drivers with the printer disconnected connect the printer after install reboot if that fails buy new cartridged

Posted on Jul 24, 2009

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Take the print head out and check for any damage or ink it may need to be cleaned. Then out them back in. On the menu on the printer print a error sheet.

Posted on Jul 24, 2009

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1 Answer

Printer won't print in colour, keeps saying recalibration needed


Blocked print head nozzles
Inkjet printers need to be used frequently to prevent blocked print head nozzles. You may have blocked print head nozzles.
Try the printer maintenance to clear the printer nozzles.
After several deep cleaning attempts and there is no improvements in the print then a new print head is required. Also try - Removing the print head, run it under hot water for 2 mins, then let soak for 10 min. then used a can of compressed air to dry thoroughly. It may fix the blocked nozzles.
A new print head maybe expensive and it maybe more cost effective to purchase a new printer.

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As you said that you have already cleaned the print heads it could be the contacts inside the printer has gone bad. Its suggested by HP that if you get any error regarding the print head you should contact them and they will replace the printer. Please do so. Thanks.

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Yes it might be a problem with the print heads. You can try cleaning printheads under tools menu. After cleaning printheads click on Align Printer in Tools menu and that will solve your problem. If not then you might need to replace the printheads. If you these print heads are less than 2 years then HP will replace it for free.

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This is a very simple procedure. Advance to the print head menu on the printers screen and scroll to replace printheads and press enter.

The machine will move the print head carriage into a position on the left side rail that has a small access door. Lift the window and access the printheads behind the access door. The printheads have a loop to grasp to pull upwards and out. look at the diagram and instruction that come with your new printhead.

Replace the printhead, be sure to take the protective plastic off. close the door and window and follow the instruction to replace the printhead cleaner which is located behind the left front panel.

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1 Answer

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Those are expensive printheads too, usually when that keeps happening it's because you are using generic ink and not HP, if that's the case you need to flush out the heads with water, replace the inks with OEM and you may need to flush the printheads again. If you are using OEM inks the printheads you are getting are out of date.

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1 Answer

Hello, Does not print yellow


its ok. kodak printers have inkjet printheads that have nozzles in them. take out cartridges and printhead and reseat them again,from home center ,clean the printhead.if the does not resolve the issue,call kodak @ 1800 421 6699 . kodak replace printheads for customers free of cost.

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You need to replace the printheads. You will have to call Dell in order to get the printheads and instructions for your machine. Oh and please take a moment to give this solution a fixya rating. Thanks! :c)

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This is the official way of cleaning HP print heads. I just totally dissasembled my HP 80 print head, and found that on the inside of the print head there was a giant glob of ink that was between the inside of the print head and a metal mesh filter material. You need to remove this glob, can only be done by opening the cartridge. Good luck, tell me what happened.

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2 Answers

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Make sure the printheads are not expired. Check the dates. Order new from HP direct

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