Question about Brother MFC-9840CDW Laser Printer
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
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
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
Reinstall the drum unit and close the
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.)
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.
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.
Posted on Oct 02, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 06, 2015 | Office Equipment & Supplies
Jul 26, 2014 | Canon Genuine Oce Imagistics Fx3000...
Jan 21, 2011 | Xerox Workcentre 5225 / Copier, With...
Brother strongly recommends that customers do not use
generic drum unitsand/or toner cartridges, or refill their Brother toner
cartridge. Each Brother laser printer is designed to work at pre-set
temperatures that are matched exactly to each of our individual toner
formulations. Each individual component is designed to work with the other to
ensure quality and reliability. Using non-Brother supplies may affect the
Verify the message displayed on the LCD.
Warning: If you just used the machine some parts inside the
machine are extremely hot.
1. Pull the paper tray completely out of the machine.
2. Pull the jammed paper out of the paper tray opening. If
you are unable to remove the jammed paper continue to STEP 3. If you are able
toremove the jammed paper continue to STEP 9.
3. Open the front cover. If you cannot open the front cover,
do not useextra force. See below for further assistance.
4. Pull out the drum unit and toner cartridge assembly. The
jammed papermay be pulled out with the toner cartridge and drum unit assembly,
or removing the drum and toner assembly may release the paper so you canpull it
out of the paper tray opening.
a. If you are able to remove the drum assembly and jammed
paper continueto STEP 5.
b. If you cannot remove the drum unit and toner cartridge
assembly easily, do not use extra force. See below for further assistance.
5. Place the drum unit on a drop cloth or large piece of
disposable paper to avoid spilling and scattering the toner. Hold down the blue
lock lever on the left side of the drum assembly and lift the toner out of the
drum unit. Examine the drum carefully for small pieces of paper that may be
6. Reinsert the toner cartridge in the drum unit until it
clicks into place. If you put it in properly, the lock lever will lift
7. Place the drum unit and toner cartridge back into the
machine. Use equal pressure on both sides of the drum unit when pushing it back
into place. Make sure it clicks into place.
8. Close the front cover. Make sure it clicks into place.
9. Remove any remaining paper in the paper tray and then
reload it. The tray can hold up to 250 sheets of 20lb paper. Do not over fill
the tray.There is a maximum paper mark located on the top of the right and left
paper guide. It looks like a V cut out in the plastic. Fan the stack of paper
well to avoid paper jams or misfeeds.
NOTE: If you are using special paper and the machine has
problems feeding it from the paper tray, try the paper again using the manual
10. Put the paper tray firmly back into the machine and
unfold the output paper tray support flap before using the machine.
11. Turn the Brother machine around with the back of the
machine facing you.
12. Open the back cover.
13. The black plastic inner chute should spring open
automatically when the back cover is opened. Note: The inner chute has a
diagram on it of a piece of paper being removed from the unit.
14. If there is paper inside the machine carefully remove
15. Close the back cover. NOTE: The inner chute will close
automaticallywhen the back door is closed.
16. To test, print the Help List:
a. Press the REPORTS key located on the right side of the
b. Press the up or down arrow key until Help list appears on
c. Press Menu/Set. The report should begin printing.
Thanks an good luck
Nov 27, 2010 | Brother MFC-7220 All-In-One Laser Printer
Sep 24, 2010 | Brother MFC-9840CDW Laser Printer
Aug 16, 2010 | Brother MFC 8840D All-In-One Laser Printer
Dec 05, 2009 | Office Equipment & Supplies
Feb 18, 2015 | Brother MFC-9840CDW Laser Printer
490 people viewed this question
Usually answered in minutes!