MFC-8440 All-In-One Laser Printer: how to clean the drum for Brother MFC-8440...

heya!
this stands for brother mfc-8440 as in the title.
you need to reset the "drum counter" of your printer..
to do so try one of those

Brother Laser Printers:

After replacing the drum unit, keep the front cover open (make sure the power is on). Press and hold the "GO" button until all four LED's are lit. Once the four LED's light up, close the front cover. Make sure the drum LED is off. The counter is reset!

Brother Fax Machines:

Open the front cover. Press the CLEAR/BACK button. Press 1, when the display shows accepted.

Toner low or defected drum

Open Toner front cover.

Press Clear.

Press 1 when the display shows REPLACE DRUM? 1.YES 2.NO
ACCEPTED.

It should be constantly cleaned by it's cleaning blade with every revolution. If that's not making continuous contact inside the drum unit, then it's time to replace the drum. The symptom to look for is not just a gray background, but images that repeat about 3 inches down the page as the drum rolls around to that point again.
If the background is gray without noticeable repeating image, it may be a defective toner cartridge. We've wasted a fair amount of money replacing Brother drums when it turned out to be the much cheaper toner cartridge. If it's a new cartridge, take it back to the store along with before and after print samples.

With new drum you got to have a instruction how to reset counter of the drum. In every packet of new drum come with instruction how to change and reset.

Try changing the toner, if it's generic that's your problem, and if it's either an old brother drum or a generic you may need a new one. There is also a glass to clean, it's right above where the drum sits inside, 1/2 inch wide across the top. Wipe with a dry cloth.

does it ever reset by opening and closing front door? if not, there could be paper stuck in fusing area behind rear door. open and inspect. if you see no paper, pull drum unit out and locate open slot in the bottom, center of drum unit. could be a small scrap of paper in that slot.

hth,
razors

The drum is the larger plastic unit that slides out an the toner cartridge fits into it. The corona wire is the very fine wire at the front top of the drum. Just slide the little cleaning tab back and forth.

try this
replace the old drum with the new replacement.
with the front door open press the Clear/Back button
press the number 1 button and when ?accepted? appears on the LCD close the front cover.

hope this helps
thanks for rating

Printer thinks its out of paper when its not. Displays messsage "Check Paper - Reload Paper." Have emptied and replaced paper stack several times. No visible jam. Have shut down and restarted. Still not fixed.