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Chapter 4 Maintenance and Troubleshooting 31
Troubleshooting the Touch Screen
If you are experiencing problems with the touch screen, check the following list of
common installation errors.
Table 3. 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.
Power Management
The M170 monitor conforms to the Video Electronics Standards Association (VESA)
Display Power Management Signaling (DPMS) standard. To benefit from power
management, the monitor must be used in conjunction with a computer and video card
that implements the VESA DPMS standard.
The PC automatically invokes the power management feature if you do not use the touch
screen, mouse, or keyboard for a user-defined period of time. To restore the video image,
simply touch the screen, press a key, or move the mouse.
M170 Regulatory Agency Approvals
Your product complies with the following regulatory standards:
• FCC-B
• CE
• UL/cUL
• VCCI
• CCC
• C-tick
3M Touch Systems Proprietary Information