SMART Board GX User Manual

Chapter 5 Troubleshooting the display
smarttech.com/kb/171744 63
The display is turning off when it shouldn’t
Symptom Troubleshooting steps
The display turns off or enters
Standby mode when it shouldn’t.
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Check the power off timer setting to determine whether there’s an issue with the
setting’s configuration.
See Power settings on page82.
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Check the automatic no-signal setting to determine whether there’s an issue with
the setting’s configuration.
See Source settings on page85.
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If the display is connected to a room control system via the RS-232 connection,
disconnect it to determine if the problem is being caused by the room control
system.
The screen is blank or there’s a problem with the
image on the screen
Symptom Troubleshooting steps
The screen is blank when the status
light is green.
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Make sure the screen is working by pressing the Home button on the front
control panel.
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Make sure any connected computers are on and not in Standby mode.
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Restart the display and any connected computers.
See Turning the display on or off on page54.
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Replace the video cables that connect any computers to the display to determine if
the issue is with the cables.
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Ensure video cables that connect any computers to the display meet the
recommended specifications.
See Using recommended cables on page40.
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Ensure that any connected computer’s external video port is enabled, and is set to
output a supported display resolution.
Note
The recommended resolutions are 3840 × 2160 or 1920 × 1080.
A computer is connected to the
display, but only a “No signal”
message appears on the screen.
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Make sure the computer is connected to the currently selected input.
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If the currently selected input is a computer, make sure the computer is not in
Standby mode.
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If the currently selected input is a laptop, make sure that the laptop’s external
display port is enabled.
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Ensure video cables that connect any computers to the display meet the
recommended specifications.
See Using recommended cables on page40.

SMART Board GX Specifications

General

Aspect Ratio	16:9
Touch Points	20
Response Time	8 ms
Brightness	350 cd/m²
Display Size	75 inches
Resolution	4K UHD (3840 x 2160)
Connectivity	HDMI, USB, VGA
Display Type	LED
Viewing Angle	178°
Included Software	SMART Notebook