The Error says "Cover Open Front" but it is not open

Just do a manual reset:-
Open the front cover of the printer
Press and release the "clear" key
Press "start", then press the up arrow until you see the number 12 on the display
Press "ok", you will see "accepted" on the display
Close the front cover, your toner cartridge should now work.


Original Brother tonor cartidges should reset automatically.

hi

find link for brother printer error

https://help.brother-usa.com/app/answers/detail/a_id/67765/~/how-do-i-clear-the-message-cover-is-open%3F

Hi. You have to follow these steps: Be very careful:

1. Open front cover, like in this image:


2. Pull out your printer's toner cartridge & drum unit:


3. Open back cover


4. Pull the tab which is in front of you in order to open the rear chute cover.


5. If there is any, pull the jammed paper out of the fuser.




6. Close back cover and put the cartridge toner & drum unit back where it belongs.


7. Close front cover too and see if it works! If your error will still appear, try powering your printer OFF & ON

I hope I helped you!

According to Brother Solution Center:

The machine may not work properly because of the condensation inside of the machine caused by a temperature differential between the inside and the outside of the machine.
To clear the error message please follow the steps below:

1. Keep the machine's power on and open the front cover.
   
   
2. Leave the front cover open for 30 minutes.
   
   
3. Close the front cover.
   
   
4. Turn off the machine's power switch and turn it on again.

If you are satisfied, please rate or/and leave a testimonial. Thanks!

Follow the steps below to clear the "Clean Sensor" error message.

1. Open the front cover of the printer (cover D).
2. Slowly close the cover again. This action will move the lever shown below and clean the sensor.
   
3. Open and close the cover several times. Once the front cover is left closed the printer will start to calibrate.

Once complete, the error should no longer appear and the printer should resume normal operation.

Note: If the error message is still apparent after following the steps above, contact Epson for further advice.

The inner cover is a flap on the inside in front of the carriage when it is at rest when the cover us open. You had to flip the inner cover down to access the ink cartridges.
Open the cover. The inner cover is in the center and need to be flipped up.
Good luck.

The printer displays a 'Cover open, please close cover' error message, even though the cover is closed.

This can happen if the lever on the cover open sensor is knocked off the switch assembly.

These are your possibilities based on your error.

Front cover is open
Close the front cover of the printer.
Fuser cover is open
Close the fuser cover located behind the back cover of the printer.
Paper jam
Clear the paper jam. See Paper jams and how to clear them on page 85. If the printer
does not start printing, press the Go button.
Memory full
The printer memory is full and the printer cannot print full pages of a document. See
Solving print problems on page 97.
Print overrun
A print overrun occurred and the printer cannot print full pages of a document. See
Solving print problems on page 97.

no prob try -- As a technician, I have worked on tons of printers. This particular error had stumped me for a while, but I finally found the cause. As others had pointed out before, it can have alot to do with some obstruction in the print path, the gears, or ink on the clear plastic encoder strip. You're on the right track - I found the the purge cap (the white sliding mechanism that the print head parks to when it's not in use) was not lubricated well enough from factory. If you lubricate the sliders with some white grease (don't get it on the small wipers or the black caps) the mechanism can now slide more freely, and the unit can park the head properly without giving you the dreaded head homing error 5100 (or E-2-2 on the LCD display) Keep in mind that this repair will probably require you to remove the right panel off of the printer to gain access to the purge mechanism. There are two screws behind the printer, and two in front for each corrosponding side panel (the front screws are behind the grey front panel of the printer - open the top cover to see the clips which hold the front cover on) Hope this helps some of you out.

what's the error say?