Question about Brother MFC-7820N Printer
Back cover is shut, but display permanently reads 'Back Cover Open', so machine will not function
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,
Posted on Apr 17, 2013
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
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
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
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
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
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