Before doing any maintenance, please unplug the power of the panel to prevent electric shock
When cleaning the IR tube, please use a dry, soft, micro-fiber towel and wipe all the way around the outside
of the screen. This is where the IR tube is located, which helps with touch accuracy. Dust is easily collected
on the screen surface due to the long-term exposure in the air. Having dust on the IR tube caused ineffective
touch or inaccurate positioning.