Brother HL-3075CW - Manual (Page 115)

Routine Maintenance
110
5
h Slide the drum unit and toner cartridge assembly into the printer. Make sure that you match the toner
cartridge color to the same color label on the printer.
i Close the top cover of the printer.
j
Turn the printer power switch back on.
Note
DO NOT turn off the printer power switch or open the top cover until the LCD shows Ready.
C - Cyan
M - Magenta Y - Yellow
K - Black
C
M
Y
K