Brother HL 2070NR User Manual

Routine maintenance
5 - 5
5
5Pull off the protective cover.
CAUTION
 Wait to unpack the toner cartridge until immediately before 
you put it in the printer. If toner cartridges are left unpacked 
for a long time the toner life will be shortened.
 If an unpacked drum unit is put in direct sunlight or room 
light, the unit may be damaged.
 Brother strongly recommends that you do not refill the toner 
cartridge provided with your printer. We also strongly 
recommend that you continue to use only Genuine...

Routine maintenance
5 - 6
5
6Put the new toner cartridge firmly into the drum unit until 
you hear it lock into place. If you put it in properly, the 
lock lever will lift automatically.
7Clean the primary corona wire inside the drum unit by 
gently sliding the blue tab from right to left and left to right 
several times. Return the tab to the home position (▲) 
before you put the drum unit back in the printer. If you do 
not, printed pages may have a vertical stripe.
8Put the drum unit and toner...

Routine maintenance
5 - 7
5
Drum unit
This printer can print up to 12,000 pages* with one drum unit.
* At 5% print coverage (A4 or Letter size). The actual number of printed pages will vary depending on the average type 
of print job and paper.
Note
 There are many factors that determine the actual drum life, such as the temperature, humidity, type of 
paper, type of toner used, number of pages per print job and so on. Under ideal conditions, the 
average drum life is estimated at up to 12,000 pages....

Routine maintenance
5 - 8
5
Replacing the drum unit
Note
We recommend that you clean the printer when you replace the drum unit. See Cleaning on page 5-11.
Follow these steps to replace the drum unit.
1Make sure that the printer is turned on and the Drum LED 
is blinking. Open the front cover of the printer.
2Press and hold down the Go button for about 4 seconds 
until all the LEDs light up. Once all four LEDs are lit, 
release the Go button.
3Pull out the drum unit and toner cartridge assembly.
IMPROPER...

Routine maintenance
5 - 9
5
4Push down the blue lock lever and take the toner 
cartridge out of the drum unit.
Note
 Be sure to seal up the drum unit tightly in a bag so that 
toner powder does not spill out of the unit.
 Discard the used drum unit according to local 
regulations, keeping it separate from domestic waste. 
If you have questions, call your local waste disposal 
office.
5Unpack the new drum unit.
6Put the toner cartridge firmly into the new drum unit until 
you hear it lock into place. If...

Routine maintenance
5 - 10
5
7Put the drum unit and toner cartridge assembly in the 
printer.
8Close the front cover.
9Make sure that the Drum LED is now off.
 

Routine maintenance
5 - 11
5
Cleaning
Clean the outside and inside of the printer regularly with a dry, lint-free cloth. When you replace the toner 
cartridge or the drum unit, make sure you clean the inside of the printer. If printed pages are stained with 
toner, clean the inside of the printer with a dry, lint-free cloth.
Cleaning the outside of the printer
Clean the outside of the printer as follows: 
1Turn off the printer power switch and unplug the printer 
from the AC power outlet.
2Pull the paper...

Routine maintenance
5 - 12
5
3Wipe the outside of the printer with a soft cloth to remove 
dust.
4Remove anything that is stuck inside the paper tray.
5Wipe the inside of the paper tray with a soft cloth to 
remove dust.
6Put the paper tray firmly back in the printer.
7Plug the printer back in and turn on the printer power 
switch.
Cleaning the inside of the printer
Clean the inside of the printer as follows: 
1Turn off the printer power switch and unplug the printer 
from the AC power outlet.
 

Routine maintenance
5 - 13
5
2Open the front cover of the printer.
3Pull out the drum unit and toner cartridge assembly.
4Wipe the scanner window with a dry, lint-free cloth.
5Put the drum unit and toner cartridge assembly back in 
the printer.
6Close the front cover.
7Plug the printer back in and turn on the printer power 
switch.
HOT SURFACE
After you have just used the printer, some internal parts of the printer are 
extremely hot! Wait for the printer to cool down before you touch the internal 
parts...

Routine maintenance
5 - 14
5
Cleaning the corona wire
If you are experiencing print quality problems, please clean the corona wire as follows:
1Open the front cover of the printer.
2Pull out the drum unit and toner cartridge assembly.
CAUTION
 We recommend that you place the drum unit 
and toner cartridge assembly on a piece of 
disposable paper or cloth in case you 
accidentally spill or scatter toner.
 To prevent damage to the printer from static 
electricity, do not touch the electrodes shown in...