Operation Manual

Working with the Tablet PC
To uchscreen
Tou chs cr ee nNotes
High-quality LCD screens (TFT ) are installed in F ujitsu Tablet PCs. For technical reasons,
these screens are manuf actured for a certain resolution. An optimum and sharp image can
only be ensured with the resolution intended for the particular screen. A screen resolution
which differs from the specification can result in an unclear image.
The screen resolution of your Tablet PC’s touchscree n is optimally set at the factory.
Current production techno logy cannot guarantee an a bsolutely fault-free screen display. A few
isolated const antly lit or unlit pixels (picture elemen ts) may be present. The maximum p ermitted
number of faulty pixels is stipulated in the international standard ISO 9241-307 (Class 2).
Example:
A screen with a resolution of 1280 x 800 has 1280 x 800 = 1024000 pixe ls. Each pixel consists of
three subpixels (red, green and blue), so there are almost 3 million subpixels in total. According to ISO
9241-307 (class 2), a maximum of 2 light and 2 dark pixels and in addition 5 light or 10 dark subpixels
or an equivalent mix (1 light subpixel counts as 2 dark subpixels) are allowed to be defective.
Pixel
A pixel consists of 3 subpixels, normally red, green and
blue. A pixel is the smallest element that can be generated
by complete functionality of the display.
Subpixel
A su bpixel is a separately addressable internal structure
within a pixel that enhances the pixel function.
Cluster A cluster contain
s two or more defective pixels or
subpixels in a 5 x
5 pixel block.
Background l igh ting
LCD screens are operated with background lighting. The luminosity of the background
lighting can decrease over the period of use of the Tablet PC. However, you can
set the brightness of y our screen individua lly.
Ambient light senso r
If your Tablet PC was shipped with the Windows operating system, the screen brightness
is regulated by the ambient light sensor according to the particular light conditions. This
results i n optimum readability and longer battery life at the same time.
If your Tablet PC was shipped with Window s 8.1, the adaptive brightness setting is disabled. To
change the ambient light sensor settings, select Control Panel - System and Security - Power Options -
Change pla n settings - Change advanced pow er settings - Display - A ctivate adaptive brightness setting..
Select On to activate the adaptive brightness setti ng with the help of the ambient light sensor.
Synchronising the display on the touchscreen and an external mo nito r
In Windows 8.1 wipe your finger ove r the screen from the right-hand edge. The setting
Charms - Devices - Second screen opens. Select the desired output type.
Fujitsu 23