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Brother MFC 7820N error message "back cover open" but cover is closed. machine is now not functional as error message can't be removed

Posted by jcsdmd1 on

  • Anonymous Apr 23, 2008

    i have the same problem - error message reads:
    back cover open - please close back cover

    there are no cover's open, and now the machine is not functional.
    thesis deadlines are all around me - help!

  • Anonymous Jun 06, 2008

    close the back cover but cover closed...happened when shut off during printing



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If you open the back cover (depress the release button on the top right) If you lift it up look for two black anchors that grab the base when you close the lid. I have one that has a broken tab on the left side, which happens to be the same side as the cover closed switch. If the top is not closed all the way the rollers do not line up and the cover switch is not depressed to let normal operation. Also, if the switch arm is busted (case colored plastic push pin protruding from the cover) it will not make contact with the switch when closed. Try closing the cover and push down on left side of the fax. Does the error go away? If not, the actuator arm or the switch are bad.


Posted on Feb 08, 2009

  • Anonymous Feb 08, 2009

    Does anyone know where to find parts for a Muratec F-65 fax?

  • Nice2Know Aug 04, 2011

    I had the same problem with the error message. I discovered that a piece of paper was stuck, and I had to open the back cover and depress the blue release button to partially free up the paper so I could pull it out. Once I cleared the paper and closed the back cover, the printer worked perfectly. Good luck! Cheryl



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Sensor jammed on 'Back Cover Open'

Hi,there is a little switch or magnetic sensors or light sensors behind the doors on the printers, make sure it functioned properly, if that switch or sensor dont work u get that message all the time,
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Apr 17, 2013 | Brother MFC-7820N Printer

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Back cover open close the back cover

If you turn the printer off and then back on with a paper jam in it you will get this error message instead of a paper jam message. To clear the paper jam from the back of the printer read the instructions from here:

Dec 03, 2010 | Brother MFC-7820N Printer

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Brother MFC 7820N Toner life end with new toner

I found the following post on another site. It appears to work. If you want to reset your Brother MFC 7820N machine so you no longer have the error message: Toner End of Life, do the following:

1. Open the front cover of the 7820N, that is, the cover that allows you to pull out the toner and drum, but don't pull out the drum/toner.
2. Push the button: Options (located on the left of the control pad).
3. Type: *00 on the keypad.

The Brother MFC 7820N should be reset and the Toner End of Life message should disappear. WARNING: This may void your warranty and ultimately damage your machine if you are reusing or refilling your cartridges, but you should already know that. Hope this helps.

Sep 07, 2010 | Brother MFC-7820N Printer

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MFC 7820n 'close back door error'

Hello Daysinn,

The "back cover open" message is usually caused by a paper jam inside the printer.
Follow these steps to rectify the problem.

1. Unplug the power to the printer.
2. Open the back and front cover.
3. Remove the drum and toner, this may be difficult because it may be stuck; don't be afraid to pull hard, you wont break anything.
4. Check for any foreign objects, most likely a peice of paper.
5. Reinstall the drum and toner.
6. Make sure to close the front and back covers.
7. Turn the power back on.

If the message stays after all this, there may be a sensor not working.



Mar 25, 2010 | Brother MFC-7820N All-In-One Laser Printer

1 Answer

Brother (photocopier, fax and scanner machine) says << back cover open. close back cover>> but the back cover (or at least what i think is the back cover) is closed. I even opened and closed it...

I have fixed this problem on my 7820n printer by brother.

open the back door, then inside there will be a black colored other kind of like door that pulls back away from the roller. on this inner door is a black long thin plastic lever that runs from about the center of the inner door to the right. on the right end of it is a lever that slides along a curved increase on the right side wall. when both doors are closed this right end of the rod or lever moves up to close the gap between what is the sensor. this long thin plastic rod had snapped out of place and when i snapped it back in making sure the spring was correctly installed on the left end of it and the middle part of the rod slid correctly in its groove...the right end of the lever correctly closed the gap on the sensor (when both doors are closed) and the back door open error went away.

So that's how you really fix it!!!!

James Hilliard - Totally super awesome guy! hee hee

Oct 27, 2009 | Brother MFC-7820N Printer

1 Answer

Back cover open message on brother mfc 7820n

Had same problem. Closer inspection revealed bit of paper out of sight. Removed the toner cartridge and worked to free torn paper. Then restart. Hope it helps.

Dec 15, 2008 | Brother MFC-7820N Printer

1 Answer

No matter what I do, I get the "Back Cover Open.. close the back cover" error message. I've repeatedly opened/closed the back cover, taken out toner cartridge, checked for paper jams or scraps. ...

I Had the Same Problem with a printer i got for free. I tried messing around with the back door sensor flag(spring loaded piece) but it seemed to be located correctly.

I believe the switch has dual purpose first to check for the back cover closed and to see when a paper has gone around the rollers. It would only give me the "back cover" error when a new paper was loaded and would go around the rollers. I would then remove this piece of paper and try again and it would give me the same error.

This lead me to believe that the sensor was working like it should and it could be a programming bug. I couldnt find a way to reset the printer so I took off the left side cover by removing one front and one back screw. (UNPLUG POWER OF COURSE) Then pulled each connector and plugged them back in. This seemed to reset the printer and now it works!!!!

Nov 23, 2008 | Brother MFC-7820N Printer

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Back cover open message on brother mfc 7820n

Oct 24, 2008 | Brother MFC-7820N Printer

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MFC-7820N error message: back cover open; close back cover. The back cover is closed but error message will not go away and I can not print. Thank you.

There is a little black lever in the middle that needs to be re inserted properly. (like a little black stick in the middle.  Needs to slide to the left or right.   See more of this one the site.   It solved it for me.

Jun 21, 2008 | Brother MFC-7820N All-In-One Laser Printer

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