Summary - NCR 7454 Hardware User's Manual

Summary

If there is a touch screen calibration issue during or after installation,
take the following actions in the order listed:
1. Recalibrate.
2. If re‐calibration is unsuccessful after two attempts, then run the
Noise check to change the frequency.
3. If you are still not able to calibrate, change the touch screen glass.
4. The final step is to replace the Processor Board. If this corrects the
problem, then the old glass is probably OK to reuse.
Chapter 2: Hardware Installation 2-39