SMART GX Series Installation And Maintenance Manual page 62

Chapter 5 Troubleshooting the display
Symptom
There are bright spots on the screen.
Colors don't appear correctly.
The image is cut off or shifted to the
left or right.
The image doesn't fill the entire
screen.
A persistent image appears on the
display.
The video from a device connected
to the display's USB Type-C
connector doesn't appear on the
display's screen.
smarttech.com/kb/171861
Troubleshooting steps
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Press the Home button
issue is with the video input.
Take a photograph of the screen and send it to SMART support. If SMART support
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determines that the issue is with the screen and the display is under warranty, you
may be eligible for a replacement.
Enable Pixel shift in the System section of the display's settings to reduce the risk of
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pixel burn-in when a static image is displayed for long periods.
See System on page 79.
Check the Display settings in Input settings (Inputs > Advanced settings > Display).
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See Advanced settings on page 86.
Press the Home button to determine whether the color issue occurs on the Home
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screen only. If the Home screen appears normal but a specific video input does not,
test the connection cables and video source equipment by temporarily replacing
them.
Be aware that if two or more displays are mounted side-by-side, there will be
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minor differences in colors across the displays. This issue is not unique to SMART
products.
If the screen is completely lacking one primary color (red, green, or blue) or the
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color problems occur on the Home screen, provide a photo of the screen to SMART
support.
If you're using the VGA analog video input, use a different cable or connect a
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different source to see if the issue is with the cable or input.
Adjust any connected computer's video settings, particularly zoom, crop, and
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underscan.
See the computer's operating system documentation.
If any connected computers' desktops are entirely black, change them to dark gray
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or a different color.
If any connected computers' desktops are extended across multiple screens,
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duplicate the desktops across the screens or set the display as the only screen.
Adjust any connected computers' video settings, particularly overscan.
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See the computer's operating system documentation.
Make sure the connected computer's video connector is configured to output a
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supported video signal. See No video display output from a laptop.
See Image persistence or burn in on LCD displays.
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Enable Pixel shift in the System section of the display's settings to reduce the risk of
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pixel burn-in when a static image is displayed for long periods.
See System on page 79.
Make sure the connected device supports Display Port Alternate Mode via USB
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Type-C. If there is no DP logo beside the USB Type-C connector on the device, it
might not support Display Port Alternate Mode.
Make sure the cable connecting the device to the display supports SuperSpeed
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USB data speeds of 5 Gbps (or above). The cable should be marked with the
SuperSpeed USB logo. The absence of this logo may indicate the cable doesn't
support a SuperSpeed USB data connection that's required for Display Port
Alternate Mode.
on the front control panel. If it appears correctly, the
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