Brother DCP 8085DN User Manual

98
Cleaning the drum unitC
If you have print quality problems, clean the 
drum unit as follows.
aTurn off the machine’s power switch. 
Unplug the power cord from the AC 
power outlet. 
bOpen the front cover and slowly take out 
the drum unit and toner cartridge 
assembly.
 
IMPORTANT
• We recommend that 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.
• To prevent damage...

Troubleshooting and routine maintenance
99
C
eTurn the drum unit gear by hand while 
looking at the surface of the OPC 
drum (1).
 
fWhen you have found the mark on the 
drum that matches the print sample, 
wipe the surface of the OPC drum with a 
dry cotton swab until the dust or glue on 
the surface comes off.
 
IMPORTANT
• The drum is photosensitive so DO NOT 
touch it with your fingers.
• DO NOT clean the surface of the 
photosensitive drum with a sharp object.
• DO NOT use a scrubbing or wiping...

100
Replacing the consumable itemsC
You will need to replace the consumable items when the machine indicates that the life of the 
consumable is over.
IMPORTANT
• We recommend placing used consumable items on a sheet of paper to prevent accidentally 
spilling or scattering the material inside.
• Be sure to reseal the consumable items tightly so that the material inside does not spill.
 
Note
• Go to http://www.brother.com/original/index.html for instructions on how to return your used 
consumable items...

Troubleshooting and routine maintenance
101
C
Replacing a toner cartridgeC
The High Yield toner cartridges can print 
approximately 8,000 pages
1 and the 
Standard toner cartridges can print 
approximately 3,000 pages
1. Actual page 
count will vary depending on your average 
type of document (i.e., standard letter, 
detailed graphics). The machine is supplied 
with the TN-620 toner cartridge that will need 
to be replaced after approximately 3,000 
pages
1. When a toner cartridge is running 
low, the...

102
cPush down the blue lock lever and take 
the used toner cartridge out of the drum 
unit.
 
WARNING 
DO NOT put a toner cartridge into a fire. It 
could explode, resulting in injuries.
 
IMPORTANT
• Handle the toner cartridge carefully. If 
toner scatters on your hands or clothes, 
wipe or wash it off with cold water at once.
• To avoid print quality problems, DO NOT 
touch the shaded parts shown in the 
illustrations.
 
• Brother strongly recommends that you DO 
NOT refill the toner cartridge...

Troubleshooting and routine maintenance
103
C
Note
Make sure that you put in the toner 
cartridge properly or it may separate from 
the drum unit.
 
gClean the corona wire of the drum unit 
by gently sliding the blue tab from right 
to left and left to right several times.
 
Note
Be sure to return the blue tab to the home 
position (a) (1). If you do not, printed 
pages may have a vertical stripe.
 
hPut the drum unit and toner cartridge 
assembly back in the machine.
 
iClose the front cover.
Note
DO...

104
CAUTION 
HOT SURFACE
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. To prevent injury, when you 
open the front or back cover (back output 
tray) of the machine DO NOT touch the 
shaded parts shown in the illustration. If you 
do this you may get burned.
 
 
aPress the front cover release button and 
open the front cover. 
 
bSlowly take out the drum unit and toner 
cartridge assembly.
 
IMPORTANT
• We recommend that you put the drum unit 
and toner...

Troubleshooting and routine maintenance
105
C
ePut the toner cartridge firmly into the 
new drum unit until you hear it lock into 
place. If you put the cartridge in 
properly, the blue lock lever will lift 
automatically.
 
Note
Make sure that you put in the toner 
cartridge properly or it may separate from 
the drum unit.
 
fPut the new drum unit and toner 
cartridge assembly in the machine.
Do not close the front cover.
gPress Clear/Back. 
Replace Drum?
a1.Yes
b2.No
Selectabor OK
To confirm you are...

106
Replacing periodic 
maintenance parts
C
The periodic maintenance parts will need to 
be replaced regularly to maintain the print 
quality. The parts listed below will have to be 
replaced after printing approximately 50,000 
pages for PF Kit MP and 100,000 pages for 
PF Kit1, PF Kit2, Fuser and Laser. When the 
following messages appear on the LCD 
please call Brother Customer Service 
(in USA) 1-877-BROTHER (1-877-276-8437) 
(in Canada) 1-877- BROTHER.
C
Machine InformationC
Checking the Serial...

Troubleshooting and routine maintenance
107
C Checking the remaining life of 
partsC
You can see remaining life of the machine’s 
drum unit and periodic maintenance parts on 
the LCD.
aPress Menu, 6, 7. 
67.Parts Life
1.Drum
2.Fuser
3.Laser
Selectabor OK
bPress a or b to choose 1.Drum, 
2.Fuser, 3.Laser, 4.PF Kit MP, 
5.PF Kit 1 or 6.PF Kit 2
1.
PressOK.
 
67.Parts Life
1.Drum
Remaining: XX%
1PF Kit 2 appears only when the optional 
LT-5300 tray is installed.
cPressStop/Exit.
Note
The life check will be...