Brother MFC-9450CDN - Manual (Page 190)

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CAUTION
We recommend that you place the drum
unit on a clean, flat surface with a piece of
disposable paper underneath it in case you
accidentally spill or scatter toner.
Note
Discard the used drum unit according to
local regulations, keeping it separate from
domestic waste. Be sure to seal up the
drum unit tightly so that toner powder does
not spill out of the unit. If you have
questions, call your local waste disposal
office.
CAUTION
To prevent damage to the machine from
static electricity, DO NOT touch the
electrodes shown in the illustration.
Hold the handles of drum unit when you
carry it. DO NOT hold the sides of the drum
unit.