HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
3-5
!
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.
* 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. Using or trying to use potentially incompatible toner and/or
toner cartridges in your printer may cause damage to the printer itself and/or may result in
unsatisfactory print quality. Our warranty coverage does not apply to any problem that was
caused by the use of unauthorized third party toner and toner cartridges. To protect your
investment and guarantee print quality, continue to replace consumed toner cartridges with
only genuine Brother branded supplies.
* Printing with a third-party toner or third-party toner cartridge may reduce not only the print
quality but also the quality and life of the printer itself. It may also cause serious damage to
the performance and life of the drum unit. Warranty coverage does not apply to problems
caused by the use of third-party toner or third-party toner cartridges.
* 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.
(5) Pull off the protective cover.
Fig. 3-7
(6) Put 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.
Fig. 3-8