Brother Printers Mfc 7750 Laser 600x600dpi Super G3 Fax Owners Manual

217TROUBLESHOOTING AND MAINTENANCE
How to Replace the Toner Cartridge
WARNING
Just after you have used the MFC, some internal parts of the MFC will be
extremely HOT!  So, never touch the shaded parts shown in the illustration.
      
HOT!
1Open the top cover.  Make sure the top cover is completely open.  To
remove the drum unit, hold each side of the drum by its handles and
gently lift the drum forward toward you.
Top Cover
Top Cover
Drum Unit
Place the drum unit on a drop cloth or large piece of...

218CHAPTER NINETEEN
2Gently turn the lever on the toner cartridge forward until it stops.  The
toner cartridge cannot be removed unless the shutter is completely
closed, by turning the lever fully to the front.
Toner Cartridge
Drum Unit
3Remove the old toner cartridge from the drum unit by gently pulling it
out.
WARNING
Handle the toner cartridge carefully.  If toner scatters on your hands or
clothes, immediately wipe it off or wash it with cold water. 

219TROUBLESHOOTING AND MAINTENANCE
4Unpack the new toner cartridge.  Place the used toner cartridge into the
aluminum bag and discard it according to local regulations.
                                    
Aluminum Bag
New 
Toner
Cartridge
Old 
Toner
Cartridge
WARNING
nWait to unpack the toner cartridge until immediately before you install
it into the MFC.  If a toner cartridge is left unpacked for a long period
of time, the toner life is shortened.
nYou can use only a genuine Brother toner cartridge...

220CHAPTER NINETEEN
6Slide the new toner cartridge into the opening on the right side of the
drum unit.  To ensure that the toner cartridge and the drum unit fit
together correctly, make sure that the toner cartridge guide arrow is
exactly aligned with the guide arrow on the drum unit.
Drum Unit
Toner Cartridge
7Gently turn the lever on the toner cartridge backward until it stops.
Lever
8Reinstall the drum unit into the MFC and close the top cover.
Top Cover
Drum Unit 

221TROUBLESHOOTING AND MAINTENANCE
Replacing the Drum Unit
The MFC uses a drum unit to create the print images on paper.  If the screen
displays CHANGE DRUM SOON, the drum unit is near the end of its life.
Purchase a new drum unit to replace the current one.
Even if the display shows CHANGE DRUM SOON, you may be able to
continue to print without replacing the drum unit for a while.  However, if
there is a noticeable deterioration in the output print quality even before
CHANGE DRUM SOON is shown, then the...

222CHAPTER NINETEEN
WARNING
Just after you have used the MFC, some internal parts of the MFC are
extremely HOT! So please be careful.
HOT!
Follow these steps to replace the drum unit:
1Open the top cover.
2Remove the old drum unit.  Place the drum unit on a drop cloth or large
piece of disposable paper to avoid spilling and scattering the toner.
Top Cover
Drum Unit
s Inside the MFC 

223TROUBLESHOOTING AND MAINTENANCE
3Remove the toner cartridge from the drum unit and keep it in a safe
place.  For more information, see ÒReplacing the Toner CartridgeÓ on
page 216.
Toner Cartridge
Drum Unit
Discard the used drum unit according to local regulations.  If you are not
sure of them, call your local Sanitation Department.  Be sure to seal the
drum unit tightly so toner powder does not spill out of the unit.  When
discarding used drum units, keep them separate from domestic garbarage.
4Wait...

224CHAPTER NINETEEN
5Gently rock the new drum from side to side five or six times.
Do NOT remove the clear plastic starter sheet!
Clear plastic starter sheet
nWait to unpack the drum unit immediately before installing it into the
MFC.  If an unpacked drum unit is subjected to excessive direct
sunlight or room light, the unit may be damaged.
nHandle the toner cartridge and the drum unit carefully because they
contain toner.  If toner scatters and your hands or clothes get dirty,
immediately wipe or wash...

225TROUBLESHOOTING AND MAINTENANCE
6Reinstall the toner cartridge into the new drum unit.  For more
information, see ÒReplacing the Toner CartridgeÓ on page 216.
7Holding the new drum unit by its handles, install it.  Close the top
cover.
8The MFC will eject the clear plastic starter sheet automatically.
                                         
Clear Plastic Starter Sheet
Top Cover
Drum Unit 

226CHAPTER NINETEEN
WARNING
nDo not touch the scanner window with your finger.
nHandle the toner cartridge and drum unit carefully because they contain
toner.  If toner scatters and your hands or clothes get dirty, immediately
wipe or wash it off with cold water.
For Customer Service
USA:1-800-284-4329 (voice)
1-908-575-8790 (fax)
From within Canada:1-800-853-6660 (voice)
1-514-685-4898 (fax)
From within Montreal:1-514-685-6464 (voice)