11 Care of the machine11-4 CS240/CS231Control panel% Clean the control panel by wiping it with a soft, dry cloth.2 ReminderPressing too hard on a key in the control panel or on the touch panel may damage them. In addition,never use a mild household detergent, glass cleaner, benzene or thinner to clean the control panel ortouch panel.Document pad% Clean the document pad by wiping it with a soft clothdampened with a mild household detergent.2 ReminderNever use solvents, such as benzene or thinner, to clean the document pad.Paper take-up rollers% Clean the paper take-up rollers by wiping them with a soft, drycloth.2 ReminderNever use solvents, such as benzene or thinner, to clean the paper take-up rollers.