Brother HL 7050N User Manual

5 - 2 ROUTINE MAINTENANCE
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Toner cartridge 
A new toner cartridge contains enough toner to print up to 12,000 A4 
or Letter-size single-sided pages at about 5% coverage. 
TONER LOW Message
(Appears at intervals)
If the LCD shows TONER LOW, the toner cartridge has nearly run 
out of toner. Purchase a new toner cartridge and have it ready before 
you get a TONER EMPTY message. To replace the toner cartridge, 
see Replacing the toner cartridge in this chapter.
TONER LIFE END message
Check...

ROUTINE MAINTENANCE 5 - 3
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Replacing the toner cartridge
1Open the top cover of the printer. 
Figure 5-1
2Push down the blue lock lever and take out the toner cartridge. 
Figure 5-2
To make sure you get high quality print, make sure you use 
quality toner cartridges.  When you want to buy toner 
cartridges, call the dealer you bought the printer from.   
■Handle the toner cartridge carefully.  If toner scatters on 
your hands or clothes, immediately wipe or wash it off with 
cold...

5 - 4 ROUTINE MAINTENANCE
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3Unpack the new toner cartridge. Hold the cartridge level with 
both hands and gently rock it from side to side several times to 
spread the toner evenly inside the cartridge.
Figure 5-5
4Pull off the yellow plastic protective cover. 
Figure 5-6
■Be sure to seal the toner cartridge tightly so toner powder 
does not spill out of the cartridge. 
■Discard the used toner according to local regulations, 
keeping it separate from domestic waste. If you have...

ROUTINE MAINTENANCE 5 - 5
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5Put the new toner cartridge firmly into the printer.   If you put it 
in properly, the blue lock lever will lift automatically. 
Figure 5-8
6Close the top cover of the printer.
7If the LCD shows CARTRIDGE ERROR, take out the toner 
cartridge and then put it back into the printer again.
 

5 - 6 ROUTINE MAINTENANCE
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Drum unit
CHANGE DRUM SOON message 
The printer uses a drum unit to create the print images on paper.  If 
the LCD shows CHANGE DRUM SOON, 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
Every time you replace the drum unit, you should clean the inside of 
the printer. For more information, see Cleaning in...

ROUTINE MAINTENANCE 5 - 7
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1Open the top cover of the printer.
Figure 5-9
2Pull out the drum unit assembly (drum unit with the toner 
cartridge). 
Figure 5-10
■We recommend that you place the drum unit 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 Figure 5-11.
Figure 5-11
 

5 - 8 ROUTINE MAINTENANCE
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3Push down the blue lock lever and take the toner cartridge out 
of the drum unit assembly. 
Figure 5-12
■Handle the toner cartridge carefully.  If toner scatters on 
your hands or clothes, wipe or wash it off with cold water 
immediately.
■Do not touch the shaded parts shown in Figure 5-13.
Figure 5-13
■Discard the used drum unit according to local regulations, 
keeping it separate from domestic waste. If you have 
questions, call your local waste disposal...

ROUTINE MAINTENANCE 5 - 9
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4Unpack the new drum unit.
Figure 5-14
5Put the toner cartridge in the new drum unit.  If you put the 
cartridge in properly, the blue lock lever is lifted automatically.
Figure 5-15
■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. 
■Do not touch the shaded parts shown in Figure 5-14.
■Make sure you install the toner cartridge properly, or it may 
separate...

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6Put the drum unit assembly in the printer.  
Figure 5-16
7Reset the page counter following the instructions we have 
supplied with the new drum unit.
8Close the top cover of the printer.
■We recommend that you clean the inside of the printer 
when you replace the drum unit. See Cleaning in this 
chapter.
■If you replace only the toner cartridge, do not reset the page 
counter.
 

ROUTINE MAINTENANCE 5 - 11
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Replacing Maintenance Parts
You will need to replace the maintenance parts regularly to maintain 
print quality. When it is time to replace these parts, the following 
messages will appear on the LCD.
See Maintenance Messages in this chapter.
See Maintenance Messages in this chapter.
See Maintenance Messages in this chapter.
REPLACE PF KIT
REPLACE FUSER
REPLACE LASER