Smart Technologies Sympodium ID250 - Manual (Page 24)

18 Troubleshooting
The white in an image
doesn’t appear to be
white on the screen Video image problem Check the video connection.
Return the screen to the factory
defaults (page 6).
If you need to, you can adjust the color
setting (page 6). For details on the
color management features of your
operating system or the application that
you’re using, read the instructions that
came with your operating system or the
application.
Multiple images appear
on the interactive screen Video problem Use only the supplied video cable.
Unless the video signal is amplified,
don’t extend the video cable to more
than a total length of 50' (15 m).
The image ripples,
flickers, displays a moiré
pattern or has uneven
colors Screen setting problem Check the pitch and phase settings for
the display (page 8).
Check the contrast or brightness
settings, and adjust if necessary.
Reset the on-screen display settings.
To do this, press the Menu button on
the ID250, select Reset, and then
press Recall.
Make sure your video card is
compatible with the ID250.
Adjust your computer’s refresh rate.
Symptom Probable Cause Remedy