First, because the numbering machine of the SAW touch screen is located by the transmission and attenuation of the ultrasonic signal of the touch point, and serious oil stains and water stains will absorb the ultrasonic wave, which makes the numbering machine of the touch screen inaccurate or even ineffective, so it is only necessary to clean the numbering machine of the touch screen daily.

2. Clean the surface of numbering machine with a soft towel and water-based glass. Pay special attention to cleaning the acoustic reflection stripes on the four sides of the machine, and be careful not to damage the transducer and its connecting wires fixed on the machine.

Third, restart the computer host after cleaning.

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