Brother Hl 5250dn User Manual

							6. Routine Maintenance
63
Replacing the toner cartridge
Note
• To ensure high quality printing, we recommend that you use only genuine Brother toner cartridges. When 
you want to buy toner cartridges, call the dealer you bought the printer from or Brother Customer Service.
• We recommend that you clean the printer when you replace the toner cartridge. See Cleaning on page 73.
 
aPress the front cover release button and then open the front cover. 
bTake out the drum unit and toner cartridge assembly. 
CAUTION 
We recommend that you put 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 the 
illustration.
 
 
 
						

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64
cPush down the blue lock lever and take the toner cartridge out of the drum unit. 
CAUTION 
DO NOT put a toner cartridge into a fire. It could explode, resulting in injuries.  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.
 
Note
• Be sure to seal up the toner cartridge tightly in a bag so that toner powder does not spill out of the cartridge.
• Discard the used toner cartridge according to local regulations, keeping it separate from domestic waste. 
If you have questions, call your local waste disposal office.
 
dUnpack the new toner cartridge. Hold the cartridge level with both hands and gently rock it from side to 
side five or six times to spread the toner evenly inside the cartridge.
    
 
						

							
6. Routine Maintenance65
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.  Put the toner cartridge in the drum unit immediately after you have removed the protective cover. To prevent 
any degradation to the print quality, DO NOT touch the shaded parts shown in the illustrations.
 
CAUTION 
For USA and Canada  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 Brother brand replacement toner cartridges. Use 
or attempted use of potentially incompatible toner and/or cartridges in the Brother machine may cause 
damage to the machine and/or may result in unsatisfactory print quality. Our warranty coverage does not 
apply to any problem that is caused by the use of unauthorized third party toner and/or cartridges. To protect 
your investment and obtain premium performance from the Brother machine, we strongly recommend the 
use of genuine Brother supplies.
 
CAUTION 
For UK and other countries  Brother machines are designed to work with toner of a particular specification and will work to a level of 
optimum performance when used with genuine Brother branded toner cartridges. Brother cannot guarantee 
this optimum performance if toner or toner cartridges of other specifications are used. Brother does not 
therefore recommend the use of cartridges other than genuine Brother branded cartridges with this 
machine.
  If damage is caused to the drum unit or other part of this machine as a result of using other manufacturer’s 
products with this machine, any repairs required as a result may not be covered by the warranty.
 
 
 
 
						

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66
ePull off the protective cover. 
fPut 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.
 
CAUTION 
Make sure that you put in the toner cartridge properly or it may separate from the drum unit.
 
gClean the primary corona wire inside the drum unit by gently sliding the blue tab from right to left and left 
to right 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.
 
1
 
						

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67
hPut the drum unit and toner cartridge assembly back in the printer. Close the front cover. 
 
						

							6. Routine Maintenance
68
Drum unit
A new drum unit can print approximately 25,000 A4 or Letter size single-sided pages at 5% coverage.
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 approximately 25,000 pages. The actual number of pages that your drum will print 
may be significantly less than this estimate. Because we have no control over the many factors that 
determine the actual drum life, we cannot guarantee a minimum number of pages that will be printed by 
your drum.
• For best performance, use only genuine Brother toner. The printer should be used only in a clean, dust-
free environment with adequate ventilation.
• Printing with a third-party drum unit may reduce not only the print quality but also the quality and life of the 
printer itself. Warranty coverage does not apply to problems caused by the use of a third-party drum unit.
 
Change Drum message
If the LED shows the message below, it means the drum unit is near the end of its life. We recommend that 
you replace the drum unit with a new one before there is a noticeable deterioration in the print quality.
 
Replacing the drum unit
CAUTION 
While removing the drum unit, handle it carefully because it may contain toner.
  
Every time you replace the drum unit, clean the inside of the printer. See Cleaning on page 73.
 
 
						

							6. Routine Maintenance
69
When you replace the drum unit with a new one, you need to reset the drum counter by completing the 
following steps:
aMake sure that the printer is turned on and the Drum LED is blinking. Press the front cover release button 
and then open the front cover.
 
bPress and hold down Go for about 4 seconds until all the LEDs light up. Once all four LEDs are lit, release  
Go.
 
Improper Setup 
Do not reset the drum counter when you only replace the toner cartridge.
 
cTake out the drum unit and toner cartridge assembly. 
 
						

							6. Routine Maintenance
70
CAUTION 
We recommend that you put 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 the 
illustration.
 
 
dPush down the blue lock lever and take the toner cartridge out of the drum unit. 
CAUTION 
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.
 
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.
    
 
						

							6. Routine Maintenance
71
eUnpack the new drum unit.
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.
 
fPut 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.
 
CAUTION 
Make sure that you put in the toner cartridge properly, or it may separate from the drum unit.
 
gPut the drum unit and toner cartridge assembly back in the printer. 
hClose the front cover.
iMake sure that the Drum LED is now off.
 
						

							6. Routine Maintenance
72
Replacing periodic maintenance parts
You need to replace the periodic maintenance parts regularly to maintain print quality. You should replace 
the parts listed below after printing the following number of pages.
1At 5% print coverage (A4 or Letter size). The actual number of printed pages will vary depending on the print jobs and paper you use.
ItemApproximate LifeTo Buy Replacement
Separator pad holder assembly
100,000 pages
 1Call Brother Customer Service
Pick up roller assembly
100,000 pages
 1Call Brother Customer Service
Laser unit
100,000 pages
 1Call Brother Customer Service
Fuser unit
100,000 pages
 1Call Brother Customer Service