Reinstall the drum and toner assembly into the machine and close the front cover.Ģ. If the blue tab is not securely returned to the home position, printed pages may have a vertical strip down the page.Į. Make sure the blue tab snaps into the home position before putting the drum and toner assembly back into the machine. Return the blue tab to the home position at the far right.ĭ. Gently slide the blue tab from side to side at least 5 to 6 times.Ĭ. Be sure to place the drum and toner assembly on a piece of paper in case of spilled or scattered toner.ī. Open the front cover and remove the drum and toner assembly. Clean the primary corona wire inside the drum unit.Ī. And if the cleaning process is unsuccessful, consider replacing the drum or the corona wire altogether.The message DUST ON DRUM or CLEAN CORONA WIRE will appear when the primary corona wire on the drum unit needs to be cleaned.ġ. Make sure you are gentle, as the corona wires are quite sensitive. Please check your manuals to identify which method of cleaning is appropriate for your machine. Use Q-tip and alcohol to gently clean the wire.Reinsert the cleaning tool and the wire.Insert the tool into the underside of the corona housing.Remove the provided cleaning tool that is inside the printer, right below where the corona wire sits.To remove the corona wire, pinch the handle of it and pull.When complete, match the arrow on the tab and the arrow on the cassette before reinserting.Locate the blue tab on the assembly and gently slide it from left to right repeatedly.If the corona wire is not cleaned, the quality of the prints will begin diminishing and faded coloring or streaks may appear on the printed page. They should be cleaned every time cartridges are replaced. The corona wire then gives an even stronger negative charge to the paper so it can pull the toner from the imaging drum.Ĭorona wires take a beating and collect a lot of dirt and excess toner. This negative charge attracts the positively-charged toner. The corona wire receives a blast of high voltage, which it then transfers to the written image on the drum in the form of static electricity. When data is transferred, the laser writes the image onto the drum. The imaging drums sits in the middle of the machine, flanked by rollers, corona wires, a fuser and a toner cartridge, unless it is a Brother unit, then the Brother toner cartridge is within the drum assembly. These make it challenging to generalize cleaning techniques and give "how-to" instructions.Īs you may assume from the terminology, laser printers are known as such because the images and text that is to be printed is written with lasers. Though laser printers generally have the same components, the interior functionality and design have small differences that are unique to each manufacturer. However, this wire is one of the single most important parts of any laser printer, and it doesn't require a lime. This may even be the first time you have ever heard the word "corona" outside of a cold one on a hot day. Let's start with the obvious- what is a corona wire?Ĭhances are if you are not a printer technician, you have no idea what the answer is.
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