SMART Board 7000R Series Installation And Maintenance Manual page 63

CHAPTER 5
TROUBLESHOOTING
Symptom
The image on the screen is
distorted.
OR
There are lines, snow or other
visual noise on the screen.
OR
The image if flickering or flashing.
OR
The image is dim.
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.
51 smarttech.com/kb/171538
Troubleshooting steps
Tap the Home button
l
on the remote control to open the Home screen. If it appears correctly, the issue
is with the video input.
Switch to a different input and then back to the first input.
l
Make sure any connected computers are on and not in Standby mode.
l
Set any connected computers' resolution and refresh rate to values that the
l
display supports.
Restart the display and any connected computers.
l
See Turning off, turning on, and resetting the display on page 43.
Replace the video cables connecting any computers to the display to determine
l
if the issue is with the cables.
Tap the Home button
l
on the remote control to open the Home screen. If it appears correctly, the issue
is with the video input.
Take a photograph of the screen and send it to SMART support. If SMART
l
support determines that the issue is with the screen and the display is under
warranty, you may be eligible for a replacement.
Be aware that if two or more displays are mounted side-by-side, there could be
l
minor differences in colors across the displays. This issue is not unique to
SMART products.
If the screen is completely lacking one color on the screen or the color problems
l
occur on the Home screen, see Contacting your reseller for additional support
on page 55.
If you're using a VGA video input, use a different cable or connect a different
l
source to see if the issue is with the cable or input source.
Adjust any connected computers' video settings, particularly zoom, crop, and
l
underscan.
See the computer's operating system documentation.
If any connected computers' desktops are entirely black, change them to dark
l
gray or a different color.
If any connected computers' desktops are extended across multiple screens,
l
duplicate the desktops across the screens or set the display as the only screen.
Adjust any connected computers' video settings, particularly overscan.
l
See the computer's operating system documentation.
Make sure the connected computer's video connector is configured to output a
l
supported video signal. See
See Image persistence or burn in on LCD
below the screen or press the Home button
below the screen or press the Home button
No video display output from a
displays.
laptop.