Brother HL 4570CDWT - Manual (Page 129)

Routine Maintenance
123
5
f
Close the corona wire cover.
g
Repeat steps d to f to clean each of three remaining corona wires.
h
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.
C - Cyan
M - Magenta
Y - Yellow
K - Black
C
M
Y
K