SMART Podium ID350, Руководство по установке

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23 | CHAPTER 5 – TROUBLESHOOTING
Image Problems
If you don’t see an image on the interactive pen display, check that the interactive
pen display is turned on and that you have properly connected the power, video
and USB cables. If this doesn’t resolve the problem:
• Ensure that the display resolution isn’t larger than 1024 × 768 pixels (ID350)
or 1280 × 1024 (ID370).
• Ensure the computer’s refresh rate isn’t higher than 70 Hz (ID350) or 75 Hz
(ID370).
• Adjust the interactive screen’s contrast, brightness and backlight settings
(page 9).
• Check that the computer’s video card is compatible with the interactive pen
display by connecting the computer to another monitor and verifying that the
image is properly displayed. For further information, refer to the instructions
that came with your video card or your computer.
When you use the screen, there may be some anomalies in the image
appearance. The following irregularities aren’t necessarily indications that the
screen is defective:
• A very small number of pixels are permanently illuminated, not illuminated at
all or show an incorrect color.
• The image flickers or appears striped.
• A moiré or pooling pattern (an irregular geometric pattern) appears
temporarily when you’re writing on the screen. This pattern is the result of
hard pressure on the screen surface.
• An afterimage remains for a short time. This happens when a still image is
displayed on the screen for a long time without the screen being refreshed.
The longer the still image remains on the screen, the longer the afterimage
will last and the darker it will be. This is normal and won’t damage the screen.
However, you should use your computer’s power management tools to
preserve the life of your screen. Set the power management options so the
screen turns off when it’s not in use. If power management isn’t available,
install a screen saver that uses a blank screen.