Question about Brother MFC-7820N Printer

1 Answer

Sensor jammed on 'Back Cover Open'

Back cover is shut, but display permanently reads 'Back Cover Open', so machine will not function

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    New Friend:

    An expert that has 1 follower.

  • Expert
  • 70 Answers

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,
kind regards

Posted on Apr 17, 2013

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad
Soulvisitor
  • 1113 Answers

SOURCE: doc cover open

Yes there is and I know your problem have a look at the left hinge on lid that you lift to put down an original for copying, it will be breaking apart, the switch is black in that same corner on doc feeder base, as the hinge breaks apart the doc feed lifts in that corner causing "doc cover open" cause that switch no longer gets pushed in when lid is shut

Dodgy repair - tape switch closed, but doc feeder will not work properly/can use glass.

Repair - Easy removal of three screws and replacing 20buck hinge bought from brother dealer...part no.LE8731001 Hinge assy left.

Now that's FIXYA!

Posted on Nov 19, 2007

  • 1 Answer

SOURCE: paper jam, open back cover, then remove paper jam

Remove the paper tray. Check that the paper length adjustment is set correctly for the paper you are using. It's the small blue dam at the center 'back' of the paper tray.

Posted on Jun 25, 2008

  • 1 Answer

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

  • 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

komguy
  • 2306 Answers

SOURCE: back door open

Inside the back door is a black plastic guide, in the center there's a lever that moves when paper goes thru, on the right is a flag that needs to be in between the horseshoe shaped sensor on the right. Make sure the lever moves freely...

Posted on Oct 02, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Peper jam sensor arm has dislodged how do you get it back in


Peter Smith:

You'll have to open the body of the machine, (it's pretty tricky so pay attention to how the machine body goes back together). Once the cowling (cover) is off, you should be able to use a pair of tweezers to gently put the sensor switch arm (known as a sensor flag) back into position.

Sep 22, 2012 | Lexmark X8350 All-In-One InkJet Printer

2 Answers

Lexmark 3400 printer display says cover is open. Cover is not open. apparently it is mis reading status. will not print or turn off. Its stuck. What do I do? D.S.T


do a hard shut down..unplug power cord...that would make it go off. them leave it off for 2-3 minutes..then turn it back on and let me know the status

Jun 05, 2008 | Office Equipment & Supplies

1 Answer

T652n 202.03 paperjam


1Open the upper-front cover and remove the toner cartridge.2
Look into the printer. Remove any jammed sheets of paper that you find there.

  • If the print job only consisted of this one page, reinstall the toner cartridge and close the front cover. Press the pattlnk_10162008_2247-select_button.jpg button to clear the error, and then try printing again.

  • If the print job consisted of more than one page, confirm the entire paper path is clear before printing again. Do the following:


    1. Remove the top paper tray ('Tray 1').
    2. Remove any jammed or partially-fed sheets of paper you find here, then reinstall the tray.
    3. Go around to the back of the machine and open the upper-rear cover. Remove any jammed sheets of paper you find, then close the cover.
    4. Once you have confirmed that the entire paper path is clear, reinstall the toner cartridge and close the front cover.
    5. Press the pattlnk_10162008_2247-select_button.jpg button to clear the error, and then try printing again.


  • If you cannot locate any jammed paper under the toner cartridge, then check the rest of the printer for any jammed paper. Do the following:

    • Remove the top paper tray ('Tray 1') and look for any jammed or partially-fed sheets of paper.
    • If you do not find any jammed pages there, reinstall the tray and go around to the back of the machine. Open the upper-rear cover and look there.
    • If the entire paper path appears to be clear, close the rear cover and power off the printer. Reinstall the toner cartridge and close the front cover. Power the printer back on. If a 200 error continues on power up, a sensor in the printer may be malfunctioning. This will require a service call to correct the issue. Please contact Lexmark Technical Support for additional information (see Contacting Lexmark Technical Supportbelow for details).

Aug 28, 2012 | Lexmark T652N PRINTER OPPENHEIMER SPECIAL...

1 Answer

Its always saying that BACK COVER IS OPEN we already check it for many times but its intact and in correct possition. and also the paper wont feed the machine.


Hi there!!
The message that you're getting means that either the back cover is not closed securely or there's a jammed paper inside. Here's what you can do to clear the message:
-Please unplug the fax machine for your safety -Open the front cover -Remove the toner & drum assembly (theres a handle in the center of the drum/toner assembly, just pull it towards you. -Remove any pieces of paper stuck or the jammed paper -Remove the toner from the drum and check for any other pieces of paper stuck -Once everything is clear -Reinstall the toner back into the drum and the drum & toner assembly to the fax machine. You should hear it click into place once installed correctly -Close the front cover & plug in the power cord. That should clear the message
Hope this helps, Thumbs up if it does, thanks!

May 08, 2011 | Brother IntelliFax-2820 Laser Fax

1 Answer

The screen says the "back cover is open" and


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: http://welcome.solutions.brother.com/BSC/public/us/us/en/faq/faq/000000/000600/000096/faq000696_001.html?reg=us&c=us&lang=en&prod=mfc7420_all&Cat=11

Jan 24, 2011 | Brother DCP-7020 Black and White Copier

1 Answer

Wat is an LSU error on a phaser 3200 MFP


Change the toner cartridge , i have many units phaser3200 and this is one of the problem , but only if the toner cartridge is very old and many time refilled , if not , change the Laser unit .

  1. Remove a misfed document if the copier displays a message reading "Document Jam." Lift up the document feeder cover and turn the roller to remove an Exit Misfed document. Lower the document feeder back into place and feed the document through again. If the document is jammed on the Input side, open the cover and gently pull the misfed document to the right and out of the feeder.
  2. Pull out the paper tray and lift the tray to release it from the copier if the copier displays a message reading "Paper Jam O." Remove the jammed document, and open and close the side panel of the copier to clear the error message.
  3. Unplug the power cord and plug it back in again if the copier displays a message reading "Fuser Error, Open Heat Error, Heating Error and Overheat." If the problem persists, call for a service.
  4. Remove the toner cartridge and shake it from side to side if the copier displays a message reading "No Developer Cartridge." If this does not do the trick, you may need to replace the cartridge. Pull the release latch to open the side cover, and open the front cover. Twist the cartridge locking-lever upwards and remove the toner cartridge. Insert the new cartridge and lock the lever into place. Shut the front cover and the side cover.
  5. Power off the unit and power it on again if the copier displays a message reading "LSU Error." A problem has occurred with the Laser Scanning Unit. If the problem persists, call for a service.

Jan 04, 2011 | Xerox Phaser 3200MFP/N Laser Printer

4 Answers

I had a paper jam and I had opened back cover to clear it. Now when I close it still says Back cover open. Close the back cover. What should I do? There is a black color flap inside the main back cover...


Just fixed the same problem. My solution was as follows: When you open the back cover there is another plastic flap/cover inside that drops. Across this 2nd cover there is a plastic rod running parallel with a plastic finger that sticks up perpendicular to the rod which I believe guides the paper into the roller.

On my machine this rod came out of line, placing it about a quarter inch to the left which affected the sensor and the guide. If you look closely, you will notice a small groove on the rod that needs to be in a specfic slot on the 2nd cover. Good luck

Jun 08, 2010 | Brother MFC-7820N Printer

1 Answer

Fax display says, close back cover even with back cover closed.


Open the front cover and remove the drum and toner(cartridge) There should be a paperjam in the machine. It reads back cover open because the piece of paper is covering the sensor for the back cover.

Apr 15, 2010 | Brother IntelliFax-2820 Laser Fax

1 Answer

Paper Jam 8-112 when power on Xerox DocuColor DC 1250 Printer


You it is necessary to make sure visual(optic) to see the sensor(pick-off) of that node(knot;element), which(who) you is informed.Byvat that conk or клинят sensors(pick-offs) of the passing, electronics in this case her(its)(her) fault is practically excluded. Extremely(Most) seldom(rarely) such быват.I work(operate) 18 years I had 1 or 2 times, but only mechanical damages much(highly;very much) often were. The Sensor(Pick-off) conks or клинит, when remoove the stuck paper. I am simply(merely) run away that reason in sensor. Good luck you!

Aug 07, 2009 | Office Equipment & Supplies

2 Answers

Brother MFC-7220 says close back cover but it's already closed


Open the front cover and remove the drum and toner(cartridge) There should be a paperjam in the machine. It reads back cover open because the piece of paper is covering the sensor for the back cover.

May 13, 2009 | Brother IntelliFax-2820 Laser Fax

Not finding what you are looking for?
Brother MFC-7820N Printer Logo

83 people viewed this question

Ask a Question

Usually answered in minutes!

Top Brother Office Equipment & Supplies Experts

James Cagle
James Cagle

Level 2 Expert

481 Answers

Jim Keysor

Level 2 Expert

331 Answers

ctnozil

Level 2 Expert

270 Answers

Are you a Brother Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...