j Turn the drum unit gear toward you by hand while looking at the surface of the suspected area.
l 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 colour to the same colour label on the drum unit. Repeat this for all the toner cartridges.
k When you have found the mark on the drum that matches the drum dot check sheet, wipe the surface of the drum gently with a cotton swab until the dust or paper powder on the surface comes off.
IMPORTANT
DO NOT clean the surface of the photosensitive drum with a sharp object.
74
C
M
Y
K
C - CyanM - Magenta
Y - Yellow K - Black