BenQ TL650 Large Display User Manual - Page 30
Calibrating the touch screen, Important instructions for using the touch screen, Calibration tools
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30 Using the touch screen Calibrating the touch screen Ensure that you have installed the USB cable on the display to a computer. You can calibrate the touch screen to use it more efficiently. Refer to Calibration tools on the enclosed CD to perform the operation. Important instructions for using the touch screen • Do not bend the retro-reflective bars. The touch screen cannot function normally if the bars are bent. • Keep the touch screen out of direct sunlight or spotlights. • Avoid displaying still images to prevent image retention. • Regularly clean the retro-reflective bars with a clean, soft cloth. A dusty environment may adversely affect the performance of your touch screen. Clean the retro-reflective bars as illustrated below. Do not clean the touch sensors on the top of the screen.