Lexmark 280 - Manual (Page 18)

Accessing the system board to install internal options
CAUTION—SHOCK HAZARD: If you are installing memory or option cards sometime after setting up the printer,
then turn the printer off and unplug the power cord from the wall outlet before continuing. If you have any other
devices attached to the printer, then turn them off as well, and unplug any cables going to the printer.
Note: This operation requires a flathead screwdriver.
1 Remove the cover.
a Turn the screws on the cover counterclockwise to loosen them, but do not remove them.
b Slide the cover up until each screw is in the keyhole.
c Pull the cover forward to remove it.
Additional printer setup
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