PAR EverServ ® 7700/7200 POS Terminal Setup Guide
Touch Screen Troubleshooting
If momentary or intermittent touch screen disruption is being experienced, follow the below instructions. Examples include selecting a menu item on the left side of the touch screen and the cursor on the screen
selecting a different item elsewhere on the menu
.
Surface capacitive touch screens are designed to measure very small electrical disturbances on the screen. Electrical equipment or the user's body in very close
proximity to the bezel can affect the accuracy of this technology.
When employees operating the touch screen place their hands or forearms on the bezel, the touch screen calibration can become disrupted.
Grasping the edge of the touch screen to steady oneself will not disrupt touch screen calibration. However, if an employee is leaning on or hanging on the touch screen while operating it, this could cause
momentary disruption of the touch screen technology.
See the pictures below for reference.
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