Question about HP DeskJet 812c InkJet Printer

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I had walgreens refill my HP black ink container, but when i put it into the printer (HP deskjet 812c), the ink light just flashed continually and the printer won't work...and it makes these jerky sounds, like it's trying to do something (???)...i took the ink out and reput it in, but i finally just shut it the printer off...thx!!!

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  • HP Master
  • 3,267 Answers

It may be simply resolved by the following steps

1. there is document in the queue but paper is out
2. Cartridge problem (remove and insert again)
3. Communication error
4. Cover is open

BUT as per your description this seems more apt!!

This error means that some mechanical parts of your printer is in trouble. This could be some of the causes:

1. The print head is stuck somewhere or is unable to move because of some blockage in the printer's bay.
2. If you are using a Continuous Ink System, then the tubes might have blocked the print heads from moving.


To resolve, turn OFF your printer. Remove such blockage then turn the printer back ON

If its a problem with ink cartridges try these steps

Disconnect the Printer from the Computer.

Press the "Cartridge Change" button for ~ 3 Seconds.

When the Ink Cartridge Carriage travels to the Changing Position PULL THE POWER PLUG (NOT the "OFF" Switch). The Ink Cartridge Carriage should now Slide Freely on the Rail as long as it isn't pushed to the Right so that it goes under the shelf to the "Homed and Locked" Position.

Fold up a Paper Towel (About 1 Sheet) so that its final width is about the same as the width of the gutter under the Print Head on the Carriage and so that it is thick enough when folded to contact and lightly press on the Print Head.

Saturate the folded Paper Towel with ~ 70% Isopropyl Alcohol and lay it in the Gutter.

Manually slide the Carriage and Print Head Over the wet Paper Towel. A slight amount of drag should be experienced if the thickness of the paper towel folds is Correct.

Let the Print Heads rest on the Saturated Paper Towels for a few Minutes or Hours. Too long a Treatment may pull out all of the Cartridge's Ink: Check the Paper Towel Frequently to Assess if Ink is Capillarying out onto the Towel.

When the Treatment appears Successful remove the Paper Towel and Clean Up and plug the Printer power back in.

Run a Test Pattern via the Computer Connection WITHOUT first running the Head Cleaning Utility.

If the pattern isn't OK, Try Running the Head Cleaning Utility to see if it makes it Better or Worse.

If Worse, Repeat the Alcohol Paper Towel Treatment: The Paper Towel may be Gently Pulled back and forth under the Print Heads to wipe them off.

Posted on Nov 15, 2010

Testimonial: "~THANKS!!!!!!!!!!!!!...will check out all your suggestions..........robin"

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