Chapter 2 Handling Cleaning the Outer Case Be sure to disconnect the USB cable of the customer display from the printer or a computer, and then wipe the customer display with a dry cloth or a cloth dampened with a little water. 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. CAUTION 18