Question about Brother MFC-7820N Laser Printer

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Back Cover Open

The printer's screen tells me that the back cover it open, but no matter what I do, it wont register as being closed. I have opened it and reclosed it several times, but I don not want to figit with anything inside the back. Please Help!

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Re: Back Cover Open

When the printer does that open that back cover and look inside sometimes its hard to see but theres usually a sheet of paper scrunched in there take it out and then the printer is back working fine..

Posted on Aug 19, 2008

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Re: Back Cover Open

I've been researching this problem. It seems to be a common issue with this MFC. Apparently it's not only a known issue, but Brother has no fix for it outside of replacement.

Posted on Jun 04, 2007

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My brother mfc 7420 says that the back cover is open

When this happens it is just telling you to go through the steps of opening and closing the back cover. The back cover may not be completely closed.

Oct 18, 2012 | Brother MFC 7420 All-In-One Laser Printer

2 Answers

Printer quit printing. Screen says fuser cover is open. Where is it located so I can close it?

Your problem: paper is jammed in the back of the printer around/in the fuser.

The Users Manual for your printer is located at: Manual/UM_DCP_7030_7040_EN_1510.PDF

You'll need Adobe Acrobat Reader (free from to view it.
LOCATION:The fuser cover is located in the back - its covered by the panel in the back called
the "back cover" aka "back output tray cover".
2-step fix:
(A) open the back cover - on the back of the printer.
HOW: it flips down
(B) open the fuser cover and remove paper jam
How: Pull the 2 tabs (one left and one right) toward you to open the fuser cover.
(it also flips down to open).
Most of this fix comes from downloading the Users Manual and blowing up page 60 (of 108 pages).

Jan 01, 2011 | Brother DCP-7040 Laser Printer

1 Answer

OK almost a months ago on the screem shows the ; Back cover open- Close the back cover I couldn't find the back cover which is open what is that mean can you please tell me which is the back cover...

This happens to mine when it is actually paper jam in the back. Open the back cover, then open the black guard behind that then depress the two purple levers and pull out the sheet. Two people make it easier but I can do it myself.

Sep 05, 2010 | Brother MFC-7820N Printer

1 Answer


Hello rtbris182,

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 Printer

2 Answers

Back Cover Open. Close the back Cover. That is

Hi there,

Do the following steps to resolve the problem -

1. Open the back cover

2. Pull the flap down that hides the orange roller on the fuser  
(Careful it's Hot on that fuser!!)

3. Locate the thin piece of plastic that runs from the centre to the right hand side. This bar is the problem

4.  3/4 along the right hand side, there is a sticky out bit on this bar that should sit in a hole.

Once you located it properly, the 'door open' error went away.

Good Luck!!

Jul 07, 2009 | Brother MFC-7420 Laser Printer

1 Answer

I have a Brother MFC-7220 USB printer. It keeps telling me that the back cover is open ... and it is closed. Now I cannot use it. lease help. Thanks.

hte back cover has a little micro switch.
open the back cover, make sure there is nothing preventing from closing tight. close the back cover tight. if you have to, use tape to secure it.

Feb 11, 2009 | Brother Printers & Copiers

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

1 Answer

Brother MFC-7420 Fax Scan Copy

Maybe there is broken at the back cover try to check again the back cover,inspect the cover very well .

Nov 09, 2008 | Printers & Copiers

1 Answer

Close the back cover--but back cover is closed

The "sensor" is a simple switch, that is built into the printers backside, on the left hand side (seen from the front). A small plastic pin, that is screwed into the back cover, pushes this switch, when the cover is closed, but ...

The back cover mechanism is designed very poorly. The locking mechanism is on the opposit side of the printer. So cover is not held in position anywhere close to the sensor. This is causing the switch to "flicker" or to become "open" during operation.

Quick and dirty fix:
1) Ask you wife for one of these plastic kitchen sponges.
Any plastic sponge with a height of 6 to 8 cm (3 to 3.5 inches) will be fine.

2) Open the back cover. Standing behind the printer, on the top right inside of the cover, there is a small white pin fastened with one screw. Losen that screw a bit, pull the pin out as far as possible (to make it as long as possible) and fasten the screw again.

3) Close the back cover

4) Take the (dry !) kitchen sponge and push it into the gap between the top of the back cover and the bottom of the flatbed scanner. Still looking at the printer from the backside, it has to be in the right 30 percent of the cover. The sponge gives enough pressure to hold the cover down just a bit and this is the trick to solve that issue dirty but permanently ...

Regards, Michael

Dec 12, 2007 | Brother MFC-9420CN All-In-One Laser...

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