Brother HL 4150CDN - Manual (Page 105)

Routine Maintenance
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5
j
Hold the handle of the toner cartridge and slide the toner cartridge into the drum unit then slightly pull it
toward you until you hear it click into place. Make sure that you match the toner cartridge color to the
same color label on the drum unit. Repeat this for all the toner cartridges.
k
Push the drum unit in until it stops.
l Close the front cover of the machine.
Note
After replacing the toner cartridge, DO NOT turn off the machine power switch or open the front cover until
the LCD shows Ready.
C - Cyan
M - Magenta
Y - Yellow
K - Black
C
M
Y
K