Take a printed page
with the dots running down the page and measure the distance between the
repeating dots or group of repeating dots.
- If the
dots are spaced every 3.7 in. (or 94 mm) with about 2 - 3 dots down the page, go
to STEP 1.
- If the dot
pattern repeats every 1.5 in. (or 39 mm) with about 7 - 8 dots down the page,
the toner cartridge may be causing the issue. Go to STEP 6.
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:
a. Alcohol swab,
such as a medical alcohol pad or wipe, which can be found at a local retail
pharmacy or first aid kit.
b. Cotton 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
3. Inspect the
a. Turn off
the machine's power switch. Disconnect all cables and cords and then
unplug the power cord from the machine.
b. Press the
cover release button and open the front cover. Take out the drum unit and toner
recommend you put the drum unit and toner cartridge assembly on a clean, flat
surface with a sheet of disposable paper or cloth underneath it in case you
accidentally spill or scatter toner.
c. Push 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.
e. Turn 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 drum
drum is photosensitive and should not be touched directly by your fingers or
hand as it will apply body oils to the drum surface.
4. Clean the
a. When 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.
clean the surface of the drum with any sharp object.
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
a. When 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. Print a Printer Settings Page by pressing the SET
button 3 times within 2 seconds. The Printer Settings Page will
e. Compare the Printer Settings Page 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 DR600. 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.
6. If the dot
pattern repeats every 1.5 in. (or 39mm) with about 7 - 8 dots down the page, the
toner cartridge will need to be replaced. Refer to the following solution
for instructions - How
do I replace the toner cartridge?