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Oki 531DN (C510 C511 C530) - 310 Error - Cover Open for Upper cover. I checked cover-open switch located near to lcd - it is working.

I also did full default reset from admin webpage and from maintenace lcd menu. I also disconnected printer from power AC for 1 hour. Any other ideas ?

Posted by Tomasz on

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Mary Bone

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Sometimes if there was a paper jam and someone removed it without getting all of the paper, then there could be a small piece of paper still in the way of the sensor. If you have any compressed air it might help to blow it out of the sensor area. I have had issues with that in the past as well, so I opened up the area it said it was jammed - gave it a good going over with the can of compresses air, and it seemed to clear out the jam.

Posted on Apr 18, 2019

Testimonial: "No it is not a paper jam problem. It looks like microcontroller problem. I did sensor check under service menu. CVO UP_LU_FU shows 1.L 2.* 3.H 4.* where H is close. 1 is Cover-open switch and 3 is rear cover. So system is reading from sensor 3, but is not reading state of sensor 1. As i sad i checked Cover-open switch and it is working, i also shorted pins(pins related to cover-open switch) on mainboard and this won't work too. So in conclusion there is some bug in firmware or some part on mainboard is out of order. Any ideas ?"

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checkitright

CheckitRight

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SOURCE: Panel Lights stay on at power on

the problem is the fuser is shot, they are still available and you might think about replacing the fed and sep tires at the same time.

Posted on Feb 18, 2008

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Anonymous

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SOURCE: mfc-7220 Back Cover Open

This one made me crazy, but I finally figured it out. Turn the machine around so that you are facing the back. Open the back cover. Pull down the second smaller roller cover inside the machine. If you look closely at the second smaller cover, on the right hand side (closer the the inside of the machine), is a very thin round piece of plastic that is only half the length of the smaller cover. There are 2 thin plastic tabs attached to either end of this round piece of plastic. Gently shift this over so that the 2 plastic tabs can now go into the space provided for them. I had to move mine over only 1/4 inch.

Posted on Nov 13, 2008

Barbara

  • 6 Answers

SOURCE: Error: "Back cover is open. Close back cover."

We had this problem. It turned out there was actually a piece of paper stuck in the printer! It wasn't so easy to see it from the rear.

We removed the paper from the front by taking out the ink cartridge first. Turned the printer back on and everything was fine.


Posted on Apr 06, 2009

Anonymous

  • 1 Answer

SOURCE: Brother DCP 7020 error 'back cover open close

  • Open the back cover.
  • Pull the flap down that hides the orange roller on the fuser (be careful: it's hot)
  • Locate the inner flap that runs from the centre to the right hand side.
  • 3/4 along the right hand side, there is a tiny little perpendicular appendage on this bar that should sit in a slot. Locate it properly and the error will go away. You can go that by slightly bending the slot if fits into on the inner flap. The appendage can get jossled out of the slot when one is removing jambed paper.

Posted on Mar 11, 2010

Anonymous

  • 526 Answers

SOURCE: I cannot get the BACK COVER OPEN message to GO

There is a little cover there that has a sensor flag on it. It is most likely in a jammed position. If you are able to carefully take the cover out, you can bend it slightly, readjust the sensor flag, and reinstall it.

Thanks

Posted on Mar 12, 2010

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