3M M150 - Manual (Page 35)

Chapter 4 Maintenance and Troubleshooting
3M Touch Systems Proprietary Information
35
Problem Possible Causes and Solutions
Colors of image
are abnormal • Check that the video cable is connected properly and securely to the
monitor 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 3 for
adjusting procedures.
Troubleshooting the Touch Screen
If you are experiencing problems with the touch screen, check the following
list of common installation errors.
Table 2. Common Touch Screen Installation Issues
Common Installation Issues Possible Solutions
Touch screen does not respond
to touch • Review the installation procedures. Are all cables
connected properly?
• After you installed TouchWare, did you restart your
PC to activate the touch screen driver?
• Are the communication settings correct? Is the touch
screen trying to use the COM port or IRQ of another
device (for example, a mouse)? If so, a hardware
device conflict will result and the touch screen will
not work.
Touch screen is not accurate Calibrate the touch screen for the current video resolution
and operating system.
Cursor does not follow finger
movement or does not reach the
edges of the screen Calibrate the touch screen for the current video resolution
and operating system.
Cursor is not located directly
underneath your finger • Open the touch screen control panel and make sure
all cursor offsets (vertical, edge/horizontal) are turned
off.
• Calibrate the touch screen for the current video
resolution and operating system.
Cursor is extremely jittery or erratic Stabilize the cursor by adjusting the operating frequency
of the touch screen controller using the touch screen
control panel.
Cursor lags finger Lower the baud rate of the touch screen controller and the
touch screen driver.