Oki ML490 User Manual page 42

CAUTION!
The printhead may be HOT!
3 Swing the used ribbon cartridge up off the printhead, lift it
out, and discard it.
4 Unpack the new ribbon cartridge and install it.
Important!
Do not remove the ribbon shield (1) from the ribbon!
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Microline 490/491 User's Guide
5 Turn the take-up knob in the direction of the arrow to take
up any ribbon slack.
6 Close the access cover and turn the printer back on.
CAUTION!
If ribbon should contact the eyes:
Flush eyes with large quantities of water for 15 minutes,
keeping eyelids open with fingers. Seek medical attention.
If ribbon should contact the skin
Wash thoroughly with soap and water.
For more information
See the Material Safety Data Sheet in your Warranty,
Regulatory, and Safety Information booklet.