Brother HL 1240 - B/W Laser Printer Service Manual page 271

2.
Place the drum unit assembly containing the old toner cartridge on a flat, horizontal
surface, and pull the toner cartridge out of the drum unit assembly while pushing the
lock lever down with your right hand.
!
Caution
Handle the toner cartridge carefully. If toner scatters on your hands or clothes, wipe
or wash it off with cold water immediately.




3.
Unpack the new toner cartridge, gently rock it from side to side 5 or 6 times keeping
it horizontal.
Fig. 3-4 Removing the old toner cartridge
Fig. 3-5 Rocking the toner cartridge
3-5
CHAPTER 3 MAINTENANCE