Toshiba Portege Z20-B Series User Manual page 41

❖
Adjust the chair arm rests: they should be about the
same height as the keyboard and comfortably support
your arms, allowing your shoulders to relax.
❖
When using the keyboard, it should be centered in front
of you.
❖
The keyboard and pointing device should be close to
your elbow level. The keyboard should be flat so that
your wrists are straight when typing. However, if the
notebook is on a work surface that is above your elbow
height you may need to slope the notebook to keep your
wrists straight.
❖
Work with relaxed shoulders.
❖
When typing, keep your wrists straight and try not to rest
your wrists on the notebook. Support your arms on your
forearm area. The forearms can be supported by the
chair arm supports or the desk surface.
❖
The notebook display should be tilted so that the image
on the screen is clear.
❖
Avoid glare: position the notebook so that light sources
(lamps or windows) do not shine or reflect directly into
your eyes. Place the notebook display away from bright
light sources or reduce the light intensity from windows
by using blinds. Glare on the notebook display may
cause eye strain, eye fatigue or headaches.
❖
Certain notebook displays have a brightness
approaching that of a TV device. We recommend that
you adjust the brightness of your notebook display to a
comfortable level to prevent possible eye strain.
❖
Keep your head level, facing forward and balanced over
your torso.
❖
Adjust the font size of text on your screen to make
viewing comfortable.
❖
Rest your eyes periodically by focusing on objects that
are farther away.
Getting Started
Features and components
41