Touch bubbles/circles on the screen when no one is touching the surface

Follow the steps below if the sensor is detecting touch when no one is touching the screen.


Use the troubleshooting viewer to find the areas where touch is detected

  1. Exit the Span Workspace and any other programs that are open on your system until you have a view of your desktop
  2. Select the touch icon located in the Windows™ System Tray toolbar to open the touch utility box
  1. Open the Troubleshooting Viewer (see the Touch Module section of the projector user manual). This step will bring up an image of what the touch module is able to see. If you touch the surface, a green dot will appear in the viewer where you're touching. If any area that you are not touching turns green the area is likely bowed and interfering with the touch detection.
  2. Follow the steps in the Troubleshooting Viewer


Adjust the lasers on the touch module to bring the laser curtain further from the wall

  1. Remove the touch module cover
  2. Press the adjustment on/off button to turn on adjustment mode. The LED will turn from solid blue to alternating blue and red.
  
  1. Locate the two laser dots on the floor. They should be an equal distance away from the wall.
  2. Turn the black knob counter-clockwise to bring the two laser dots further from the wall
  3. Press the adjustment on/off button to exit the adjustment mode
  4. Complete the troubleshooting viewer step again to ensure the system is no longer detecting false touch
  5. Replace the touch module cover


Check the LED light indicator statuses

Operating
mode
LED indicator
Light source

Enable

Disable
Blue
Red
IR laser
Visible light
Standby
--
--
--
--
--
--
Power ON
ON
--
ON
--
Insert LCM power cord
--
Alignment
ON
ON
--
ON
Press the adjustment button
Press the adjustment button




Last update: December 12, 2017

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