Question about HP DeskJet 6840 InkJet Printer

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Door open error on HP6840 printer when door is closed

Keep getting door open error from my hp 6840 printer even though door is not open; have deleted and readded printer, rebooted, everything. any way to defeat this / find a work around to get the pc to ignore this error msg from the printer

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  • Anonymous Jan 06, 2009

    I keep getting that door open error also on my DeskJet 6840. Anybody know how to fix this? Door is closed and tried everything. Thanks.


  • sgt rob Mar 24, 2009

    I have the same problem. The door is closed, but I get the door is open error message. I have tried several times to uninstall and reinstall the driver. NO LUCK!



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Here's the answer:

The sensor is probably stuck, and it took me a few minutes to fix!!

Good luck...


Posted on Apr 30, 2009


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Posted on Jan 02, 2017


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If you get this error:

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then follow this guide:
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HP LaserJet P1005 Print Queue won't cancel or restart. I've turned printer on/off, opened and reclosed lid, paused and resumed, everything but what I fear I'm going to have to do and that is reboot my...

If you've ever had a print job hang, you're probably familiar with the Windows Print Spooler window. You get to this window simply by selecting the relevant printer from the Control Panel's Printers and Faxes applet (simply Printers in Vista). In the somewhat unusual event of a printer queue jam, you can go to the Print Spooler and simply delete the job. Sometimes, though, the system won't let you cut off print jobs that way: It marks the job "Deleting..." but never quite gets there, and you end up rebooting. But there's an easier way.
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Does the HP Deskjet 6840 make copies too!

This unit is a plain printer , it doesn't have any scanning or copier features with it. This is a link for the complete details about this unit.

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I changed the ink in my Lexmark 3400 printer and I keep getting an error message "cover open" and it's not open. I tried everything....unloading the software then reloading the software, shutting it off...

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Hp deskjet printer 6840 wont print .keeps on saying top cover is open when it is actually closed.

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Geezer Geek

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