Chapter 2. Arranging Your Workspace; Comfort; Glare And Lighting - Lenovo ThinkCentre M90p Safety And Warranty Manual

Chapter 2. Arranging your workspace

To get the most from your computer, arrange both the equipment you use and
your work area to suit your needs and the kind of work you do. Your comfort
is of foremost importance, but light sources, air circulation, and the location of
electrical outlets can also affect the way you arrange your workspace.

Comfort

Although no single working position is ideal for everyone, here are a few guidelines
to help you find a position that suits you best.
Sitting in the same position for a long time can cause fatigue. The backrest and
seat of your chair should adjust independently and provide good support. The
seat should have a curved front to relieve pressure on the thighs. Adjust the seat
so that your thighs are parallel to the floor and your feet are either flat on the
floor or on a footrest.
When using the keyboard, keep your forearms parallel to the floor and your wrists
in a comfortable position. Use a light touch on the keyboard and your hands
and fingers relaxed. Change the angle of the keyboard for maximum comfort by
adjusting the position of the keyboard feet.
Adjust the monitor so the top of the screen is at, or slightly below, eye level. Place
the monitor at a comfortable viewing distance, usually 51 to 61 cm (20 to 24
inches), and position it so you can view it without having to twist your body. Also,
position other equipment you use regularly, such as the telephone or a mouse,
within easy reach.

Glare and lighting

Position the monitor to minimize glare and reflections from overhead lights,
windows, and other light sources. Reflected light from shiny surfaces can cause
annoying reflections on your monitor screen. Place the monitor at right angles
to windows and other light sources, when possible. Reduce overhead lighting,
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Viewing Distance
Lower
Back
Support
Seat
Height
15