Deskjet 6840 door open

I have a deskjet 6840 color printer that won't recognize that the door is closed.  I removed and replaced the ink cartridges and when doing so the door stuck about a 1/4 inch from closing all the way.  I couldn't see anything wrong and the door finally went down after pushing hard although I think something may have snapped inside.  Now the door opens and closes smoothly but it seems the printer thinks it is open all the time.  I have cycled the printer on and off but after spending 2 days on this I give up.  Is this fixable?  I searched the forums but didn't find any thread started on this topic that applies to this printer model.  Thanks for any help on how to fix this.

I have found the solution to the problem.  The tab that the cover hinge pushes up to tell the printer the door is closed has broken off.  I can push it up manually and the printer now works.  I will look further to see if the part is replaceable. 
Here is the link that helped with the problem:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01065334&cc=us&lc=en&dlc=en&product=385458

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    Hi @lindaeleanor,
    Welcome to the HP Forums!
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    RnRMusicMan
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos Thumbs Up" to say “Thanks” for helping!

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    RnRMusicMan
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos Thumbs Up" to say “Thanks” for helping!

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