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

• Review the installation procedures. Are all cables connected properly?

to touch

• 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

• Calibrate the touch screen for the current video resolution and operating

movement or does not reach the

system.

edges of the screen

 

Cursor is not located directly

• Open the touch screen control panel and make sure all cursor offsets

underneath your finger

(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