Oki pro920TW User Manual page 94

5. Take out the new image drum cartridge from the package.
The green image drum surface at the base of the
cartridge is very delicate and light sensitive. Do not
touch it and do not expose it to normal room light for
more than 5 minutes. If the drum unit needs to be out of
the printer for longer than this, please wrap the
cartridge inside a black plastic bag to keep it away from
light. Never expose the drum to direct sunlight or very
bright room lighting.
6. Set the image drum cartridge into the printer.
CAUTION!
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