Dell OptiPlex 755 User's Guide - Page 323
Cleaning Your Computer, Computer, Keyboard, and Monitor, Mouse, Cleaning a Non-Optical Mouse
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Cleaning Your Computer CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. Computer, Keyboard, and Monitor CAUTION: Before you clean your computer, disconnect the computer from the electrical outlet. Clean your computer with a soft cloth dampened with water. Do not use liquid or aerosol cleaners, which may contain flammable substances. • Use a can of compressed air to remove dust from between the keys on the keyboard. NOTICE: To prevent damage to the antiglare coating, do not wipe the display with soap or alcohol. • To clean your monitor screen, lightly dampen a soft, clean cloth with water. You can also use a special screen-cleaning tissue or solution suitable for the monitor's antistatic coating. • Wipe the keyboard, computer, and monitor plastics with a soft cleaning cloth moistened with a solution of three parts water and one part dishwashing detergent. Do not soak the cloth or let water drip inside your computer or keyboard. Mouse NOTICE: Disconnect the mouse from the computer before cleaning the mouse. If your screen cursor skips or moves abnormally, clean the mouse. Cleaning a Non-Optical Mouse 1 Clean the outside casing of the mouse with a cloth moistened with a mild cleaning solution. 2 Turn the retainer ring on the underside of your mouse counterclockwise, and then remove the ball. 3 Wipe the ball with a clean, lint-free cloth. 4 Blow carefully into the ball cage or use a can of compressed air to dislodge dust and lint. 5 If the rollers inside the ball cage are dirty, clean the rollers with a cotton swab moistened lightly with isopropyl alcohol. 6 Recenter the rollers in their channels if they are misaligned. Ensure that fluff from the swab is not left on the rollers. 7 Replace the ball and retainer ring, and turn the retainer ring clockwise until it clicks into place. Cleaning an Optical Mouse Clean the outside casing of the mouse with a cloth moistened with a mild cleaning solution. Cleaning Your Computer 323