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c Unpack the new toner cartridge. Put the
used toner cartridge into the aluminum
bag and discard it according to local
regulations.
d Gently rock the toner cartridge from side
to side five or six times to spread the
toner evenly inside the cartridge.
e Pull off the protective cover.
f Put the new toner cartridge firmly into
the drum unit until you hear it lock into
place. If you put it in properly, the lock
lever will lift automatically.
g Clean the primary corona wire inside the
drum unit by gently sliding the blue tab
from left to right and right to left several
times. Be sure to return the blue tab to
the home position (b).
h Put the drum unit and toner cartridge
assembly back in the machine.
i Close the front cover.