Take the printed
page with the dots running down the page and measure the distance between the
repeating dots or group of repeating dots.
a. If the
dots are spaced every 3.7 in. (or 94mm) with about 2 - 3 dots down the
page, go to STEP 1.
b. If 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. Go to STEP 7.
1. 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.
inspect and clean the drum unit. Typically more than one cleaning is
required to fully remove material stuck to the drum surface. Items
required for cleaning the drum are clean blank white paper and the
Swab, such as a medical alcohol pad or wipe, which can be found at a local
retail pharmacy or first aid kit.
Swab lightly moistened with isopropyl (rubbing) alcohol.
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
the drum surface by inserting a clean sheet of blank white paper in the ADF and
make 10 blank, white copies.
the smudges or dots no longer appear, the issue is resolved.
the smudges or dots continue with no improvement after making 10 blank
copies, go to STEP 4.
the smudges or dots continue after making 10 blank copies but there is
an improvement, print 10 more blank copies to clean the drum
the smudges and dots continue after making 20 blank copies, the drum
surface may need to be cleaned manually. Go STEP
all cables and cords and then unplug the power cord from the machine.
the front cover of the machine. Then, lift the drum unit up and pull
it out of the machine.
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.
down the blue lock lever and take the toner cartridge out of the drum unit.
d. Take your
print sample and put it in front of the drum (see image below) to find the area
of the drum that may be causing the dots.
the drum unit gear toward you by hand and look for any marks or material on the
drum surface (1). Turning the drum gear will ensure you inspect the entire
The drum is photosensitive and should not be touched directly by your fingers or
hand as it will apply body oils to the drum surface.
you find the area on the drum that matches the print sample, gently wipe the
surface of the drum with the alcohol swab or cotton swab lightly moistened with
isopropyl (rubbing) alcohol.
NOTE: DO NOT clean the surface of the drum with any sharp
continuing further, allow the alcohol to evaporate or dry off the drum
surface. In some cases there may be several areas on a drum that need
c. In order
to inspect the entire drum surface, turn the drum gear towards you. Make
sure you completely rotate the drum to fully inspect the entire
you are done cleaning the drum, put the toner cartridge back into the drum unit
until you hear it lock into place. If you put the cartridge in properly, the
blue lock lever will lift automatically.
b. Put the
drum unit and toner cartridge assembly back in the machine. Close the
c. Plug the
power cord back into the machine and then reconnect all other cables and
d. To further
clean the drum and remove any materials that may not have been completely wiped
away when the drum surface was manually cleaned, make 10 more blank copies of a
clean sheet of white paper inserted into the ADF.
e. Print a User Settings list by pressing MENU, 6, 5,
START. After a few seconds, the User Settings List will
f. Compare the Help List to previous print outs with
the dots to see if the print quality has improved.
the issue is the same or 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.
the print quality issue continues after multiple cleanings, the drum will need
to be replaced. The part number for the drum is DR360. 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.
7. If the dot
pattern repeats every 1.5 in. (or 39mm) with about 7 ï¿½ 8 dots down the page, the
toner cartridge will need to be replaced. To replace the toner follow the
steps in the link below: