Brother HL-6050DN - Manual (Page 126)

ROUTINE MAINTENANCE 5 - 11
5
Put the toner cartridge firmly into the new drum unit until you hear it lock into place. If you put the
cartridge in properly, the blue lock lever will lift automatically.
Figure 5-18
Caution
Make sure you insert the toner cartridge properly, or it may separate from the drum unit when you
pick up the drum unit assembly.
6
Gently wipe the scanner window with a dry, soft cloth.
Figure 5-19
7
Put the drum unit assembly in the printer. Make sure that the printer is turned on and the front cover is
open.
Figure 5-20