Apple MA064LL User Guide - Page 64

You may have to raise your chair so that your forearms and hands are at the proper angle to the keyboard. If this makes it impossible to rest your feet flat on the floor, you can use a footrest with adjustable height and tilt to make up for any gap between the floor and your feet. Or you may lower the desktop to eliminate the need for a footrest. Another option is to use a desk with a keyboard tray that's lower than the regular work surface. Display Arrange the display so that the top of the screen is slightly below your eye level when you're sitting at the keyboard. The best distance from your eyes to the screen is up to you, although most people seem to prefer 18 to 28 inches (45 to 70 cm). Position the display to minimize glare and reflections on the screen from overhead lights and windows. Mouse Position the mouse at the same height as your keyboard and within a comfortable reach. Keyboard When you use the keyboard, your shoulders should be relaxed. Your upper arm and forearm should form an angle that is slightly greater than a right angle, with your wrist and hand in roughly a straight line. Use a light touch when typing and keep your hands and fingers relaxed. Avoid rolling your thumbs under your palms. Change hand positions often to avoid fatigue. Some iMac G5 users may develop discomfort in their hands, wrists, or arms after intensive work without breaks. If you begin to develop chronic pain or discomfort in your hands, wrists, or arms, consult a qualified health specialist. More Information About Ergonomics Go to www.apple.com/about/ergonomics. Cleaning Your iMac G5 Follow these general rules when cleaning the outside of your iMac G5 and its components: Â Shut down your iMac G5 and disconnect all cables. Â Use a damp, soft, lint-free cloth to clean the iMac G5 computer's exterior. Avoid getting moisture in any openings. Do not spray liquid directly on the iMac G5. Â Don't use aerosol sprays, solvents, or abrasives. 64 Appendix B Safety, Use, and Care Information