3M™ Multi-Touch Chassis Display User Guide    51 
 
3M Touch Systems, Inc. Proprietary Information – TSD-39373B 
Issue  Solution 
 
•  Check that the video input from the video card falls within the refresh 
rate of the display. Refer to Supported Video Display Modes and 
Refresh Rates in Chapter 1. 
•  Check that your computer is using a supported display mode. Refer to 
Supported Video Display Modes and Refresh Rates in Chapter 1. 
o image displayed (blank 
screen) 
Is the display in Power Management mode? 
•  If the LED on the rear of the display is flashing amber, touch the screen, 
press any key on the keyboard, or move the mouse to restore operation. 
o image displayed (blank 
screen) 
Are the brightness and contrast settings too low? 
•  Use the display controls to adjust these values. 
Abnormal image 
•  Check that the video input from the video card falls within the refresh 
rate of the display. Refer to Supported Video Display Modes and 
Refresh Rates in Chapter 1. 
•   Check that the video cable is connected properly and securely to the 
display and the computer.
 
Colors of image are 
abnormal 
•  Check that the video cable is connected properly and securely to the 
display and the computer. 
•  Check that no pins are bent in the video cable connector. 
Disturbances on the screen 
•  The video display adjustments are incorrect. Refer to Chapter 2 for 
adjusting procedures. 
Troubleshooting the Touch Sensor 
If you are experiencing problems with the touch sensor, check the following list of 
common installation errors. 
Table 22. Common Touch Sensor Installation Issues 
Common Installation 
Issues 
 Possible Solutions 
Touch sensor does not respond 
to touch 
 
•  Review the installation procedures. Are all cables connected properly?
•  After you installed Touch Software, did you restart your PC to activate 
the touch sensor driver? 
•  Remove the sensor communications cable and plug it back in. 
•  Disconnect the power cable and plug it back in. 
Touch sensor is not accurate   
•  Calibrate the touch sensor for the current video resolution and 
operating system. Refer to the Video Alignment section in Chapter 3 
for additional information.