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Safety, Maintenance, and Ergonomics 83
Protecting Your DVD Disc Drive
To keep your DVD disc drive working properly:
m Position your computer so that you can easily insert discs without obstructions.
m Do not put anything on top of the drive.
m Keep your computer away from any source of moisture.
Maintaining Your Display
To maintain your display and ensure its long life:
m Do not press on the surface of the display screen.
m Do not write on the screen or touch the screen with a sharp object.
m If you will not be using your display and computer for a day or more, turn off the
computer and display or use Energy Saver.
m Tu rn off your monitor, turn down the brightness, or use a screen saver program that dims
or varies the image on the screen when the computer is idle for a prolonged time.
Important Ergonomic and Health-Related Information
Here are some guidelines for adjusting the furniture in your office to reduce glare and to
accommodate your physical size and shape.
m An adjustable chair that provides firm, comfortable support is best. Adjust the height of
the chair so your thighs are tilted slightly and your feet are flat on the floor.
The back of the chair should support your lower back (lumbar region). Follow the
manufacturer’s instructions for adjusting the backrest to fit your body properly.
m When you use the computer keyboard, your shoulders should be relaxed. Your upper arm
and forearm should form an approximate right angle, with your wrist and hand in roughly
a straight line.
You may have to raise your chair so 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.