Brother Hl 5250dnr User Manual

Routine Maintenance
63
5
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.
 
 
cPush down the green lock lever and take the toner cartridge out of the drum unit. 
 

Routine Maintenance
64
5
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 suitable bag so that toner powder does not spill out of the 
cartridge.
• Go to...

Routine Maintenance
65
5
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...

Routine Maintenance
66
5
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...

Routine Maintenance
67
5
gClean the primary corona wire inside the drum unit by gently sliding the green 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.
 
hPut the drum unit and toner cartridge assembly back in the printer. Close the front cover. 
CAUTION 
DO NOT turn off the printer power switch or open the front cover until the Ready LED lights up.
 
1
 

Routine Maintenance
68
5
Drum unit5
A new drum unit can print approximately 12,000 A4 or Letter size single-sided pages at 1 per/ job.
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 12,000 pages. The actual number of pages that your drum will print 
may be significantly less than this estimate....

Routine Maintenance
69
5
Replacing the drum unit5
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 Cleaningon page 73.
 
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. Open the front cover. 
bPress and hold down the white Go button for about 4...

Routine Maintenance
70
5
cTake 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.
 
 
dPush down the green lock lever and take the toner cartridge out of the drum unit. 
 

Routine Maintenance
71
5
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 suitable bag so that toner powder does not spill out of the unit.
• Go to http://www.brother-usa.com/environment/
 for instructions on how to return the used toner cartridge 
to the brother...

Routine Maintenance
72
5
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.