Question about Brother MFC-8440 All-In-One Laser Printer

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I have a mfc-8440, 5 years old, low usage, 50% drum life, new toner cartridge. The problem is that the contrast of the printed copy does not change regardless of the setting using the path menu/copy/contrast/set/accepted. Also the printed copy is rather light although otherwise well printed.

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  • Brother Master
  • 822 Answers

This is very easy to solve. Remove the drum and toner cartridge. Look into the machine where they sat. Now look up and you will see (a little aukward but its there) a glass plate the width of an A4 sheet of paper. Run your finger accross it. Look at your finger and will probably be dirty. This is the window the laser beam passes thru to hit the drum. When its dirty it does not allow enough ;light to the drum hence a weak beam and light printing.
simples?

Posted on May 18, 2011

  • petdefense Sep 12, 2013

    Yeehaw! Thank you

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1 Answer

MFC 8440 drum changed but still states to change drum soon. Faxes are only coming in after turning off/on machine. It indicates printing but nothing happens.


There were instructions with the new drum cartridge that explained how to reset the drum counter. If you still have the box and paperwork, then go through that step-by-step and reset the counter. The machine still thinks that it has the old drum. After a certain amount of copies or prints, the machine will save itself by turning off the printer or copy functions.

Nov 02, 2010 | Brother Office Equipment & Supplies

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How do I clean the drum on the Brother MFC-8440


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.

Jan 21, 2010 | Brother MFC-8440 All-In-One Laser Printer

1 Answer

The toner tray will not pull out from the machine


Replacing the Toner Cartridge
The MFC can print up to 6,000 pages using a high yield toner cartridge. When
the toner cartridge is running low, the LCD shows TONER LOW. The MFC is
supplied with a standard toner cartridge that must be replaced after
approximately 3,000 pages. Actual page count will vary depending on your
average document type (i.e., standard letter, detailed graphics).
Discard the used toner cartridge according to local regulations. If you are not
sure of them, your local Sanitation Department. Be sure to seal the toner
cartridge tightly so toner powder does not spill out of the cartridge. When
discarding used toner cartridges, keep them separate from domestic garbage.
We recommend that you clean the MFC when you replace the toner cartridge.
1 Open the front cover and pull out the drum unit.
Place the drum unit on a drop cloth or large piece of disposable paper to avoid
spilling and scattering the toner.
2 Hold down the lock lever on the right and pull the toner cartridge out of the drum
unit assembly.
Caution
Handle the toner cartridge carefully. If toner scatters on your hands or clothes,
immediately wipe it off or wash it with cold water.
3 Unpack the new toner cartridge. Place the used toner cartridge into the
aluminum bag and discard it according to local regulations.
 Wait to unpack the toner cartridge until immediately before you install it in the
MFC. If a toner cartridge is left unpacked for a long period of time, the toner life
is shortened.
 You can use only a genuine Brother toner cartridge (TN-430 or TN-460), which
is specially formulated to ensure top print quality. Using another brand of toner
cartridge may void your MFC’s warranty. Warranty coverage does not apply to
problems caused by the use of 3rd party Toner, 3rd party Toner Cartridge or 3rd
party Drum unit.
4 Gently rock the toner cartidge from side
to side five or six times to distribute the
toner evenly inside the cartridge.
5 Remove the protective cover.
6 Insert the new toner cartridge in the
drum unit until it clicks into place.
7 Clean the primary corona
wire inside the drum unit by
gently sliding the blue tab
from right to left several
times. Return the blue tab to
the Home position ( )
before reinstalling the drum
unit assembly.
Reinstall the drum unit and close the
front cover.
Replacing the Drum Unit
The MFC uses a drum unit to create print images on paper. If the LCD shows
CHANGE DRUM SOON, the drum unit is near the end of its life and it is time
to purchase a new one.
Even if the LCD shows CHANGE DRUM SOON, you may be able to continue
printing without having to replace the drum unit for a while. However, if there
is a noticeable deterioration in the output print quality (even before CHANGE
DRUM SOON appears), then the drum unit should be replaced. You should
clean the MFC when you replace the drum unit. (See page 21-18.)
Caution
When removing the drum unit, handle it carefully because it contains toner. If
toner scatters and your hands or clothes get dirty, immediately wipe or wash
with cold water.
WARNING
Just after you have used the MFC, some
internal parts of the MFC are extremely
HOT! So please be careful.
The drum unit is a consumable item, and it is necessary to replace it periodically.
There are many factors that determine the actual drum life, such as temperature,
humidity, type of paper and how much toner you use for the number of pages per print
job. The estimated drum life is up to 20,000 pages. The actual number of pages your
drum will print may be significantly less than these estimates. Because we have no
control over the many factors that determine the actual drum life, we cannot
guarantee a minimum number of pages that will be printed by your drum.

Oct 02, 2009 | Brother MFC-9840CDW Laser Printer

1 Answer

I have a Brother mfc-8440. It prints light on the


Usually when it prints light on one side and normal on the other, it's either the drum (which you replaced) a dirty corona wire, or the toner is unevenly distributed in the cartridge. You can removed the toner cartridge and gently drop it from a distance of about 4-5 inches to dislodge any caked up toner. This is normal in a cartridge that has sat a while or if the fax machine is in a room with high humidity.
Hope this answers your question and best of luck.
Greg

Aug 02, 2009 | Office Equipment & Supplies

1 Answer

Drum Reset error


Open the front door and press the menu or options button, it will ask if it's a new drum, just press 1 for yes...good to go

May 15, 2009 | Brother MFC-8440 All-In-One Laser Printer

1 Answer

Black Streaks


pull drum unit out and clean corona wire by sliding blue plastic tab from side to side, making sure you put the tab back on the side that it was. if that doesn't take care of problem, then i would say you need a new drum unit.

razors

Jan 27, 2009 | Brother MFC-8440 All-In-One Laser Printer

2 Answers

Replacing Toner


How to tell on brother mfc-8440 or mfc-9440cn , the total copies printed so far

Sep 07, 2008 | Brother MFC-9440CN Laser Printer

3 Answers

Change of toner


I have a brother mfc 7840w

I first used the electrical tape trick and that worked for a while. Then got the toner low message again. I then tried the *00 trick, which works as follows:

1. lift lid and open front cover
2. press clear/back. "Replace Drum?" will appear on the screen.
3. Press "*00" it will then read accepted and the toner low error (End of Toner Life) should go away.
4. close it all up and your done.

Jun 08, 2008 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

Printing and copying almost blank pages


Ussally drum/toner would fix, will not be fuser, I would suspect Hi voltage board or laser unit, In australia these machines carry a 2 year return to base warranty.

Try reseting the drum counter, this also resets Bias voltage, might be your problem. open front cover with power on and press set, arrow to change drom and select yes.

Otherwise it would be a high voltage board problem, possibility alsoexist that it could be laser unit

Check status page for "71" errors, menu * 2 8 6 4 very very fast, machine will beep "maintence displays" then 77 to print out status page, 99 to return to normal.

Nov 26, 2007 | Brother MFC-8440 All-In-One Laser Printer

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