Question about HP DeskJet 940c InkJet Printer

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I had paper jam in a HP 940c printer. I removed some of the paper from the front and the balance from the rear. Now I have a flashing orange light which I think indicates a cartridge problem. The print head moved back and forth while I was trying to remove the paper and I wonder if I damaged the print head. I tried new cartridge, but no help. I should have turned off the power.

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Bogus paper jam

I had the SAME problem with my printer and after hours of searching on the web I found this solution on and it WORKED! I cleaned the contacts of both of the ink cartridges and then popped off the cover of the optical sensor on the side of the ink cartridges (black plastic cover over sensor assembly snaps off) there is a hole in the middle of the sensor, push it in with a thumb tack or toothpick and push up on sensor assembly and it will come off the side, clean the contacts on that and reassemble..the blue sensor light should come back on and you should be back in business.

Posted on Feb 05, 2008


SOURCE: hp desk jet 940c

Have I got to use both cartridges,black and the color even while one cartridge is empty.

Posted on Apr 14, 2008

  • 2794 Answers

SOURCE: will not print / cartridges will not move back and forth

I had this happen to me the other night and I had to restart the printer to get the print job out of the que. You could try that.

While it's restarting, unplug the power cord and the usb cable. That should reset it.

Posted on Jun 21, 2008

  • 863 Answers

SOURCE: HP 5610 printer won't print

Unplug this beast. Take the old ink cartridge out and re-insert. Also, check for any other jammed papers that need to be removed. Then turn this beast back on. See if that does anything old chap.

Posted on Feb 04, 2010

  • 320 Answers

SOURCE: since removing and replacing the casing to my hp

There is a switch at the bottom of the paper feeder. Check if the switch has been properly set. It will stop the blinking of the paper out.

Posted on Nov 08, 2010

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Orange ink light keeps flashing

HP Desk Jet 940c orange light flashing

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Light flashes 3 times

Which light? Orange? You probably have a paper jam or an obstruction in your paper feed path:
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The front door is closed.

Open the front door to allow prints to exit.

A paper jam has occurred during printing.

Locate and remove the jammed paper from the printer.Press the button on the device to continue printing.

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Remove the jammed paper from the rear tray.
Press the button on the device to continue printing.

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Might be a pending job gone wild. I would turn off the printer, then go to "Control Panel" and click "Printers". Double click the one you're having problem with, delete all printing documents and re-connect the printer.
You can also try a differnt USB cord or port, otherwise - the machine needs a factory reset.

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