Question about Brother DCP-7020 All-In-One Laser Printer

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Brother DCP-7020 It keeps saying to close the back cover, however, i dont no what the back cover is and i think it is closed. no one opened it that i know of. please help

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  • mrosanally Aug 01, 2008

    It tell me to close the back cover

  • fmc-jw Aug 11, 2008

    The display reads "back door open, close back door" There is no back door open and it never has been but I keep getting this message. I think it all started when we had a power outage and the machine was on.

  • profjake Oct 17, 2008

    In many cases, the little lever has just come out of the hole and slightly displaced to the left. I noticed that the plastic part of the horizontal rod it was connected to, was bowed a bit. I carefully pushed the rod to the right and got the small plastic lever to go down into the slot and got it working again.

  • Anonymous May 21, 2009

    PROBLEM: During printing, suddenly the message "Back Flap Open" started to flash and the printer stopped working.

    THE DISCOVERED SOLUTION: I flipped the rear panel open using the thumb space indentation provided on it. Inside, the flap came open and would not close. Looking again, I found that paper had jammed and fan folded along the pich where the roller and the drum press against each other. Using a pair of long nose pliers, I pulled the fan folded paper out. There were no other visible obstructions, so I tried to close the rear flap. It closed. I then closed the rear panel. It closed as well. I then turned the printer on. The error message was gone. The printer worked fine after that.

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Props to Profjake. I followed his advice and problem solved! Here is what I found out.

I had the "Back door open" error on the LCD panel. There is a "interupter" type of sensor that detects if the back door is open or closed. When the back door is closed a lever is pushed forward and blocks the interupt module. The lever that blocks the sensor was not reqching the sensor horizontally - it was too far to the left. The lever on the far right is part of a 6" rod that goes across the middle of the paper path. The rod had jumped out of it's "home" position to the left and it was bowed a little bit. I carefully re-seated the rod to by gently lifting it and moving it to the right into a slot 1/8" from where I found it. The error cleared immediately. The was most likely caused by removing a paper jam.

Once again props to Profjake as his advice led me to the solution.

Hu said that!

Posted on Jun 17, 2009

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OCTOBER 31, 2008..I HAD THE SAME PROBLEM AND DIDN'T HAVE A SOLUTION..EVERYONE IS RIGHT ON THIS WEBSITE..IT SEEMS THE BAR IN THE BACK THAT SHOWS HOW TO TAKE OUT THE JAMMED PAPER HAS A LITTLE ROD THAT FITS IN A BLANK SPACE TO THE RIGHT. IF IT IS OUT OF PLACE, THE CLOSE THE BACK COVER NOTICE COMES ON..IT IS NOT HARD TO FIX AND YOU DON'T EVEN GET DIRTY HANDS..

Posted on Oct 31, 2008

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When you open the back cover, you will see a flap that will come open As you are looking at this open flap, look to the far right and you will see a small lever that is of a slightly different color. This lever operates a small switch that tells the printer that the cover is closed. If you lift up slowly on the open flap, you will hear the lever activate this switch (in a working model, of course) and turn off the "open cover" message. If you do not hear the click, check to see if that small lever is missing. If the lever is not broken off or you do not hear the click, the switch has failed. You can bypass the switch if it has failed but requires some disassembly. Test the switch with a multimeter for proper operation before blaming the switch. If you bypass the switch and the "open cover" message is still on then the logic board may have failed. If the lever is missing, you will have to jam a folded piece of paper in there to see if the switch works. Replace the plastic lever, if broken, the switch, if bypassing it worked, or the logic board, as appropriate if the lever and switch are functioning. You may run the printer with a bypassed switch or replace the broken parts. This requires some degree of mechanical skills in knowing how to disassemble and reassemble your printer safely. If it is beyond your capability, you may have to let someone else do it or take it to a repair shop.

Posted on Oct 04, 2007

Thank you cyborgdale, your solution helped.

Posted on May 02, 2008

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I checked for a paper jam and I found one page. I took this and my printer started working

Posted on Jan 29, 2008

I've just been fighting with the 'close the back cover' problem too. All the turning 'OFF' & 'ON' didn't work or opening & closing of covers didn't work. For all that I could see, all jammed paper was gone.

It wasn't until I took our the toner cartridge that I saw one last piece of shredded paper still stuck in there. When I took it out, everything finally worked.

Posted on Nov 13, 2007

If you've had a paper jam and getting "close back door" message, make sure to open the back door to check for a paper jam (in my case one page was accordioned-up tight against the drum unit).  This solved it for me. 

Posted on Oct 19, 2007

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