Oki PT390 Manuel D'utilisation page 42

- Cleaning the Upper cutter
Using a general-purpose utility knife, flathead screwdriver, or
similar tool, remove the adhesive matter adhering to the inner
side and edge of the Upper cutter.
Note: Be very careful not to damage the edge of the Upper cutter when handling
the utility knife or screwdriver. Also take care not to dent or otherwise
damage the platen roller. A dent on the platen roller may result in
incomplete printing or line feed errors.
Using the cleaning sheet or a similar material, wipe off the
adhesive matter adhering to the Upper cutter.
Upper cutter
Note: Although the edge of the Upper cutter is not as sharp as the edges of the
utility knives generally used in offices, there is a risk of injury to a finger
that is moved while pressed directly against the edge of the cutter.
Upper cutter
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