ncr/doc/RealPOS/7455/Technical_Manuals/7455_Re... - Alsys Data

2-22 Chapter 2: Hardware Installation
• If cursor is not stable, or false touches are suspected, run the Noise
Check Utility from the Touchware Control Panel (Windows) or
from the Microcal (DOS) program. Choose the recommended
frequency (the one with the lowest noise level). This should also be
done if the touch screen is still not calibrated after one attempt to
recalibrate it.
Microcal:
a. Set the video resolution. Go to the Tools menu, Video. Select
800 x 600 256 colors.
b. Go to the Tools menu, select Noise Check.
c. Follow the instruction prompts. Choose the frequency with the
lowest noise level.
Touchware Control Panel:
a. Go to the Cursor tab and press Stabilize Cursor.
b. Choose the recommended frequency.
• The Edge Adjust should be turned off if using Windows.
Touchware Control Panel:
a. Go to the Cursor tab. Edge Adjustment should be turned off.
• Application software can possibly generate a dialog box from the
Touch Driver, with the message that the touch screen needs to be
recalibrated. If the screen appears to be working normally, this
message can be ignored. A check box labeled Do not show this
message again. displays.Makesurethisboxischecked.
Summary
If there is a touch screen calibration issued during or after installation,
take the following actions in the order listed:
1. Recalibrate.
2. If recalibration is unsuccessful after two attempts, run the Noise
check to change the frequency.
3. If you are still unable to calibrate, change the touch screen glass.
4. The final step is to replace the Processor Board. If this corrects the
problem, the old glass is probably acceptable to reuse.