26 Troubleshooting
Checking the Status of the Interactive Pen Display
The Status indicator shows whether the interactive pen display is communicating with your
computer correctly.
If the Status indicator is illuminated and orange, or is flashing orange, contact SMART Technical
Support (page 33)
If the Status indicator is off, make sure that the Power indicator is on.
Image Problems
If you don’t see an image on the interactive pen display, check that the DT770 is turned on and
that you have connected the power and video cables correctly. If this doesn’t resolve the problem:
• Ensure that the computer resolution isn’t higher than 1280 × 1024 pixels
• Ensure the computer refresh rate is set to 60 Hz or 75 Hz.
• Change the contrast and brightness settings of the DT770 (page 29).
• Check that the computer’s video card is compatible with the DT770 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.
If the Status Indicator is... this indicates that the DT770...
Illuminated and green is communicating correctly with SMART Board software.
Flashing green is communicating with a computer that doesn’t have SMART
Board software installed.
Illuminated and orange can’t communicate properly with your computer.
Flashing orange can’t communicate properly with your computer or is running a
firmware upgrade utility.
Red isn’t communicating with SMART Board software.
Off is turned off.
Status Indicator