Question about Brother MFC-7820N Printer

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Won't print; model 7820n; message: back door open, close back door; need help my brother 7820 continues to not print with the messgge :back door is open and it isnt. Also the printing keeps folding up inside and jamming the drum as well

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First check and make sure that the back diir sensor is in place next if the paper is not going all the way in to the fuser section, you will have to remove the fuser and take it apart and remove paper in it, the paper is probally holding down the fuser sensor in side of it good luck brother sr, tech

Posted on Jan 24, 2009

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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.

Thanks,

Pat

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 door wont close


First Isolate whether it is the Side Door or their is a door on the rear make sure that isn't open.
What I would do is Physically open and re-close all doors again the tabs and sensor get sticky after awhile. If not you could have a BAD sensor door switch.


Sep 14, 2009 | Brother MFC-7820N Printer

1 Answer

Back cover open will not go away ... even though back cover is closed!


This is a common problem with the Brother 7820 printers. If you open the back cover, there is a black tray in front of the fuser roller that falls back. That black tray has an arm on the inside on one side that triggers the back cover open message. try pushing that tray up firmly against the back with the back cover open and see if the message disappears. If it does, try taping folded paper to the rails on inside of the grey back cover. The verital plastic rails are what push the black tray into the printer. By taping the paper on you are adding depth to them which will push the black tray further into the printer. If this doesn't work and you cannot get the message to go away from pushing on the black tray, there may be a problem with the trigger. If this were the case I would replace the printer. You can find the 7820 refurbished for $99 online. Just google 7820 refurb.

Apr 15, 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

Back cover open message on brother mfc 7820n


http://www.fixya.com/support/t150137-one_more_person_back_cover_open_problem

Oct 24, 2008 | Brother MFC-7820N Printer

1 Answer

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

1 Answer

Printing from XP to a Brother 7820N as a networked printer


We have multiple 7820s in our office. This would be a configuration problem with your windows XP computer. From the XP computer, open a command prompt and type "ping x.x.x.x" where x.x.x.x is the ip address of the 7820n. Make sure you get four successes. I would then uninstall the brother software and drivers and go to "printers and faxes" in the control panel and manually add the printer.

To manually add a network printer, with it's own print server, on Win XP:

1 Click "Add Printer"
2 Select "Local Printer Attached to this computer"
3 Deselect "Automatically detect and install my Plug and Play printer" then click "Next"
4. Click "Create a new port" and select "Standard TCP/IP" from the drop down. Click "Next". this will open TCP/IP Wizard
5. Type in Printer IP Address next to IP Address (Port name will autopopulate) and click "Next"
6. If wizard finds printer, it will show you "Finish" button. If you get a "Additional Port Information Required" window, something is wrong with your printer or windows xp network configuration.
7. When the TCP Wizard window closes, it will take you back to Add Printer Wizard. Select "Have Disk" and navigate to the \USA\WXP\Addprt directory on your Brother Drivers disc.
8. Select brxpadd.inf and click "Open" then click "OK"
9. Select "Brother MFC 7820 N Printer" from the list and click "Next"
10. Select name of printer, whether you want a default, print test page and DONE!


Jun 12, 2008 | Brother MFC-7820N Printer

1 Answer

Scanner locked


okay, im assuming the brother all in one in the picture is what you're on about...right?!? anywayz :) basically i think it is because you have got "faxes saved in the memory" it sounds weird but the scanner locked is coming up because the scanner is not going back to its home position. if there are faxes in its memory, it means that the memory has not been cleared. to check press menu/set 9,0,1 - if the screen says "No data" means that the memory has been cleared and i don't know what to do!! if it says "Enter fax.no" means that there are faxes in the memory, in this case, the fax must be cleared of memory, (if you need the faxes, you must save them before proceeding) turning it off clears memory apparently but im assuming you've tried that countless times.Turn off the machine's power switch and then on again. If the error message continues, leave the machine for several minutes and try it again. the MFC-7820 can store memory for up to 4 days, so watch out if you have a 7820. apparently this will resolve the issue and the message should go away, hence the scanner returning to its home position!! hope this helps

user guide : http://www.topedge.ro/info/USER-GUIDE/BROTHER/MFC-7820N.pdf

11-3 is the scanner locked section
11-5 is the fax removal section

Dec 05, 2007 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

Back cover Open was the message on my screen


This suggests that the micro switch that controls the opening/closing signal to that 'door' is malfunctioning. Open the door,find the switch and manually press it right in then whilst holding it in - try to operate the machine.

May 28, 2007 | Brother MFC-7820N Laser Printer

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