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In this video we are going to show you how to replace DR210CL drum unit in the Brother
HL3070CDW or similar model printer. Open up the top cover and remove the drum toner cartridge
unit from the printer. Remove the toner cartridge from the drum by pressing down and holding
green release lever and lifting the cartridge out of the drum. Remove the new drum out of
its packaging. Insert the toner cartridge into the drum and press down firmly on the
cartridge until you hear the click. Clean the corona wire on the new drum unit by pressing
down on the green tab and sliding it back and forth across the unit. Repeat this 5 times
to clean the Corona Wire. Return the tab back to its original position. Be sure to slide
the tab all the way to the left until you hear the click. Place the drum toner cartridge
unit back into the printer and close the cover. The printer is now ready for use. Note, there
are 4 drum toner units in the printer each drum unit must be replaced when the drum level
indicator for that drum shows low. For more information please visit us at www.tonerparts.com