Cleaning The Outer Case - Epson DM-D30 Technical Reference Manual

Cleaning the Outer Case

Be sure to disconnect the USB cable from the printer or the computer, and then wipe the dirt off the outer case
with a dry cloth or a damp cloth.
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 Never clean the product with alcohol, benzine, thinner, or other such solvents. Doing so may
damage or break the parts made of plastic and rubber.
 Rubbing the LCD screen with too much force using a dry cloth may scratch the surface.