Psion Teklogix Vehicle-Mount Computer 8590 - Manual (Page 54)

Chapter 2: Basic Checkout
Removing The Protective Film From The Display
28 8580/8590 Vehicle-Mount Computer User Manual
To set the transmitting power of the wireless card, please read the documentation on
the wireless card.
2.12 Removing The Protective Film From The Display
The display of the 8580/8590 is protected during transport by a transparent film.
This film should remain on the display during assembly to avoid damage to the
display surface.
Only remove the film once all of the assembly work has been completed.
2.13 Powering Up The 8580/8590
Power up the 8580/8590 only after connecting all of the devices. If 18V or more is
connected to a 12V 8580/90, the vehicle-mount WILL BE DAMAGED AND
WILL NO LONGER FUNCTION.
The vehicle-mount is powered up by connecting it to an appropriate power supply
and then, depending on the version of the device, either using the power switch or
the ignition signal
Important: Make sure there is a suitable disconnecting device such as a
power switch or circuit breaker in the power supply circuit.
2.14 Protecting The TFT Display From Memory Effect
The TFT display of the 8580/8590 has to be protected from the burning in of a
motionless image. An image that has remained motionless for too long can cause
irreversible damage to the display. With TFT displays there no cathode rays burning
in an afterimage as in old TV sets or monitors, but TFT displays still have a
“memory effect”. This is because with a still image the liquid crystal molecules
align themselves in a certain way and become inert if they are not moved. Like
burning in the effect is irreversible, but can be avoided by regularly turning off the
display or by using a screen saver with changing content.
Define in the power management center of the utilized operating system that the
displays of the 8580/8590 should be turned off when no user input occurs.
A motionless image can stay on the display for a maximum of 12 hours. After more
than 12 hours there is the risk of the “memory effect”.