Brother Hl 4050cdn User Manual

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dClean the corona wire as follows:
1Push to release the latches of the white corona wire cover (1), and then open the cover. 
2Clean the corona wire inside the drum unit by gently sliding the green tab from left to right and right 
to left several times. 
 
CAUTION 
Be sure to return the tab to the home position a (1). If you do not, printed pages may have a vertical stripe.
 
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3Close the corona wire cover.  
4Repeat steps 1 to 3 to clean each of three remaining corona wires.
eUnpack the new toner cartridge. Hold the cartridge with both hands and gently rock it five or six times to 
spread the toner evenly inside the cartridge.
 
fRemove the protective cover. 
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gHold the handle of the toner cartridge and slide the toner cartridge into the drum unit. Make sure that you 
match the toner cartridge colour to the same colour label on the drum unit, and make sure that you fold 
down the toner cartridge handle (1) once the toner cartridge is in place. Repeat this for all the toner 
cartridges.
hPut the drum unit back in the printer. 
iClose the front cover of the printer. 
jTurn on the printer power switch.
CAUTION 
DO NOT turn off...

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Drum unit6
Order No. DR-130CL
A new drum unit can print approximately 17,000 A4 or Letter size single-sided pages.
Note
 There are many factors that determine the actual drum life, such as the temperature, humidity, type of 
paper, type of toner used and so on. Under ideal conditions, the average drum life is estimated at 
approximately 17,000 pages. The actual number of pages that your drum will print may be significantly 
less than this estimate. Because we have no...

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bHold the green handle of the drum unit. Lift the drum unit up and then pull it out until it stops. 
cRelease the gray lock lever (1) that is on the left side of the printer. Pull the drum unit completely out of 
the printer using the green handles on the drum unit.
 
CAUTION 
Hold the green handles of the drum unit when you carry it. DO NOT hold the sides of the drum unit.
 
 
 
We recommend that you place the drum unit on a clean, flat surface with a piece of...

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dHold the handle of the toner cartridge and pull it out of the drum unit. Repeat this for all the toner 
cartridges.
 
CAUTION 
To prevent damage to the printer from static electricity, DO NOT touch the electrodes shown in the 
illustration.
 
 
 
To avoid print quality problems, DO NOT touch the shaded parts shown in the illustrations.
     
 

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eUnpack the new drum unit and remove the protective cover. 
CAUTION 
Wait to unpack a drum unit until immediately before you put it in the printer. Exposure to direct sunlight or 
room light may damage the drum unit.
 
fHold the handle of the toner cartridge and slide the toner cartridge into the drum unit. Make sure that you 
match the toner cartridge colour to the same colour label on the drum unit, and make sure that you fold 
down the toner cartridge handle (1) once...

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gPut the drum unit back in the printer as follows.
1Make sure that the gray lock lever (1) is in the up position and put the drum unit in the printer. Push 
down the gray lock lever (1).
 
Note
When you put the drum unit in the printer, match the green guides (1) of the drum unit handle to the green 
arrows (2) on both sides of the machine.
 
 
2Push the drum unit in until it stops. 
hClose the front cover.
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When you replace the drum unit with a new one, you need to reset the drum counter by completing the 
following steps:
aTurn the printer power switch back on.
bPress the + or - key to choose Machine Info..
cPress OK to proceed to the next menu level, and then press the + or - key to choose 
Reset Parts Life.
dPress OK, and then press the + key to choose Drum Unit.
ePress OK two times.
 

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Belt unit6
Order No. BU-100CL
Change Belt Unit message6
When the belt unit runs out, the following message appears on the LCD. When you see this message, you 
must replace the belt unit:
 
Change Belt Unit
CAUTION 
DO NOT touch the surface of the belt unit. If you touch it, it could degrade print quality.
  
Damage caused by incorrect handling of the belt unit may void your warranty.
 
Replacing the belt unit6
aTurn off the printer power switch. Press the front cover...