Brother DR-360 Drum Unit - How do I clear the message Drum Error from the display?

To clear the message Drum Error from the display clean the corona wire by following the instructions listed below:

1. Turn off the power switch and unplug the power cord.
2. Open the front cover by placing your hand on the top center section of the machine (above the word Brother) and pull forward.
3. Remove the drum and toner assembly by pulling on the handle in the middle of the toner and drum assembly.
NOTE: We recommend that you place the toner and drum assembly on a piece of paper in case you accidentally spill or scatter toner.
4. Clean the primary corona wire inside the drum unit by gently sliding the green tab from right to left and left to right several times. Return the tab to the home position before you put the drum/toner assembly back into the machine. If you do not, printed pages may have a vertical stripe.
5. Place the drum and toner assembly back in the machine.
6. Close the front cover of the machine.
7. Plug the machine in and turn the power switch on.

If the problem continues, the drum (DR360) will need to be replaced. Instructions for replacing the drum click here:

1. Open the front cover by placing your hand on the top center section of the machine (above the word Brother) and pull forward.
2. Remove the drum and toner assembly by pulling on the handle in the middle of the toner and drum assembly. NOTE: We recommend that you place the drum and toner assembly on a piece of paper in case you accidentally spill or scatter toner.
3. Push down the green lock lever on the left side of the toner and drum assembly, and then lift the toner cartridge off of the drum unit.
NOTE: Handle the toner cartridge carefully. If toner scatters on your hands or clothes, immediately wash it off with cold water.
4. Unpack the new drum unit.
5. Put the toner cartridge firmly into the new drum unit until you hear it lock into place. If you put it in properly, the lock lever will lift automatically.
6. Place the drum and toner assembly back in the machine.
7. Perform a drum reset:
a. Make sure the front cover is open. Press the Clear/Back key on the control panel of the machine. The LCD will read Replace Drum? 1. Yes 2. No.
b. Press 1. The LCD will display Accepted. Wait for the machine to display Cover Is Open, Close the Front Cover.
c. Close the front cover making sure it latches on both sides.