1. Print the
Printer Settings page by pressing the OK button 3
If the print
quality of the Printer Settings page is blurry or appears smeared or
smudged downward and your machine is within warranty, you can locate a Brother
Authorized Service Center (ASC) in your area by clicking on the link
http://www.brother-usa.com/service/default.aspx or contact
Brother Customer Service by calling 1-877-Brother (1-877-276-8437) Monday
through Friday, excluding holidays.
machine is out of warranty, Brother may extend the warranty for this
issue. You can contact Brother Customer Service using the information
If the print
quality of the Printer Settings is not blurry or smeared
BUT there ARE dots or smudges continue to STEP
If the print
quality of the Printer Settings is not blurry or smeared and there
are NO dots or smudges, the machine appears to be printing
Review the Printer Settings and determine if the dots
are spaced at specific intervals (3.7 inches or 1.5 inches) OR are the dots
randomly spaced on the page. See examples below.
spaced at 1.5 inch or 3.7 inch intervals
3. Dots are typically caused by foreign material inside the machine
(for example, paper dust, glue from labels or envelopes, paper clips, staples)
sticking to or damaging the surface of the drum. Toner builds up on or sticks to
these areas on the drum and creates black dots on the printed pages.
4. Do the following
to clean the drum unit.
a. Open the front
cover of the machine. Then, lift the drum unit up and pull it out of
Be sure to place the drum unit on a clean, flat surface on top of a piece of
disposable paper to avoid spilling and scattering toner. If you get toner
on your hands or clothes, immediately wash it off with cold water.
the toner cartridge from the drum by holding down the green lock lever on the
left side of the drum unit and lifting the toner out.
Handle the toner cartridge carefully. If toner scatters on hands or clothing,
immediately wipe it off or wash it with cold water.
c. Turn the drum unit
over. Make sure the white drum unit gear (1) is on the left hand side.
d. Turn the
white drum unit gear toward you by hand while looking at the surface of
the drum roller.
e. Look for any marks
or material on the drum surface (1). Turning the drum gear will ensure you
inspect the entire drum surface.
The drum is photosensitive so DO NOT touch it with your fingers.
DO NOT clean the surface of the photosensitive drum with a sharp
DO NOT use a scrubbing motion because this might damage the drum.
f. Clean the roller by
gently wiping the entire surface of the drum with an alcohol swab, such as a
medical pad or wipe, or cotton swab lightly moistened with isopropyl alcohol
(91% strength alcohol is preferred, but 70 â€“ 75% strength alcohol is also
acceptable). Allow the alcohol to evaporate or dry off the surface before
continuing further. Be sure to look over the entire drum as there may be
several areas on a drum that need cleaning.
precaution please note: Isopropyl alcohol is flammable and should be kept away from
fire or flame. As stated, this cleaning process typically has to be
repeated several times to remove certain kinds of foreign material from the drum
NOTE: DO NOT clean the surface of the photosensitive drum
with a sharp object.
the drum unit over. Clean the primary corona wire inside the drum unit by gently
sliding the green tab located the top of the drum unit, from left to right
several times. Return the green tab to the home position before reinstalling the
drum unit assembly.
Reinstall the toner into the drum (be sure it clicks into place). If you put it
in properly, the green lock lever will lift automatically.
6. Reinstall the
drum and toner assembly into the machine and close the front cover, pressing
firmly on each side until the cover clicks into place.
7. To further clean
the drum and remove any materials that may not have been completely wiped away
when the drum surface was manually cleaned, print 10 to 15 blank pages from the
After printing the
blank pages continue to STEP
8. Print the Printer
Settings page by pressing the OK button 3
If the quality has
improved, but the issue is still visible, you will need to repeat the cleaning
process. Performing multiple cleanings has been very successful.
If the issue is the
same and the dots are spaced every 3.7 in. (or 94mm) with about 3 -
4 dots down the page, and the print quality issue continues after multiple
cleanings, the drum will need to be replaced.
The part number for
the drum is DR720. If you find that your retailer does not carry the
specific supplies and accessories you are looking to locate, you can purchase
them by calling our toll free Accessory Line on 1-877-552-MALL (6255) or shop
on-line at our website at http://www.brothermall.com.
If the issue is the
same and the dot pattern repeats every 1.5 in. (or 39mm) with about
7 - 8 dots down the page, the TONER cartridge may be causing the issue, the
toner cartridge needs to be replaced.
Toner part numbers
are TN720 (standard yield) and TN750 (high yield). If you find that your
retailer does not carry the specific supplies and accessories you are looking to
locate, you can purchase them by calling our toll free Accessory Line on
1-877-552-MALL (6255) or shop on-line at our website at http://www.brothermall.com.
If the issue is the
same and the dots are appearing randomly on the page, check for loose toner
inside the machine and around the drum area. A toner
cartridge that is leaking or has leaked inside the machine will need to be
replaced. Do not remove the toner cartridge from the Brother machine until you
are ready to replace it. Excess toner can be cleaned with a soft, dry, lint free
cloth before replacing the cartridge. See solution: How
do I clean loose toner from inside the machine?
for step by step
you have a toner cartridge that is leaking, call Brother Customer Service at
1-877-Brother (1-877-276-8437) Monday through Friday, excluding
strongly recommends that customers use only genuine Brother drum units and/or
toner cartridges. 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
hardware performance, print quality and machine reliability. The Brother limited
warranty does not apply to any problem that is caused by the use of third party
drum units, toner cartridges or toner.