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07-18-2011 09:57 AM
My printer for some reason thinks its cover is open, so ity will not print.
How do i fix this? i have tried turning it off and restarting it, but this does nothing. I have unplugged it also to no effect.
07-18-2011 10:30 AM
I had the same problem with a n OfficeJet J5750. There is a little metal switch that gets pushed down by a plastic protrusion on the lid. I could not determine any damage to either the plastic protrusion or the switch but if I pushed the switch down with a screw driver while holding the lid open I could get the "cover open" message to go away allowing the printer to operate. It appeared the lid protrusion no longer pressed the switch far enough in to trigger that the lid was closed. I fixed my problem by putting some tape on the end of the protrusion to make it a little longer so it would push the switch in far enough. Hope this helps you.
03-06-2014 03:31 PM - last edited on 03-06-2017 08:36 AM by OscarFuentes
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
Sorry to hear that you are having issues with your Deskjet6840. I have done some research on the issue. Please click on the link that I have provided on how to Resetting the Printer. If this does NOT resolve your issue, please contact HP Total Care direct at 1-800-474-6836 or if you are outside North America, please click on the following link to Contact HP Worldwide.
Thank you so much for your time.
07-24-2014 10:02 PM - edited 07-24-2014 10:04 PM
Open up the pop out panel on the right side, and jam foam rubber in the hole to prop the switch open. When you need to change ink cartridges, yank out the foam rubber while you do that, or, use a Dremel tool to saw down the plastic wall that pops up to prevent you from replacing cartridges while the lid is allegedly closed. What a cockamamie design. I swear that the Door Open switch is PLANNED OBSOLESCENCE. Everyone with an HP printer will have this problem after owning it for 3-5 years. Hey, if you have had your printer for a few years, take a look UNDERNEATH the cartridges. What kind of gunky swampgas HAZMAT pile of goo is that? ha ha ha ha. PLEASE RECYCLE.
07-24-2014 10:22 PM
The HAZMAT swampgas comment is just a joke. You can clean your printer if you are careful, take time, and don't make a mess. However, regarding the door-open switch, popping the right panel off and jamming foam rubber to prop the switch open ACTUALLY WORKS. Just don't be a child and stick your fingers in there while printing. That's what all this door open nonsense is about. The World thinks that people are children, and HP has taken sides with the World in this matter. Hence, OMG! DOOR OPEN! GATHER UP THE CHILDREN AND PREVENT THEM FROM TOUCHING ANYTHING! OMG! WHAT IF THEY GET AN INKY FINGER! AAAAAAAHHHHHGGGGGRRRRGG!