1. Touch screen maintenance, touch no response fault phenomenon:
When touching the screen, the mouse arrows do not move, and the position does not change.
Second, the cause of the failure of touch screen maintenance touch non-response:
(1) The dust or scale accumulated on the sound wave reflection stripes on the four periphery of the surface sound wave touch screen is very serious, resulting in the touch screen not working;
(2) The touch screen is faulty;
(3) The touch screen control card is faulty;
(4) The signal line of the touch screen is faulty;
(5) The serial port of the computer host fails;
(6) The computer's operating system malfunctions;
(7) Touchscreen driver installation error.
3. Touch screen maintenance touch unresponsive fault solution:
(1) Observe the touch screen signal indicator, the light flashes regularly under normal circumstances, about once per second, when touching the screen, the signal light is always on, after stopping the touch, the signal light resumes flashing.
(2) If the signal light is still on when it is not touched, first check whether the touch screen needs to be cleaned; Secondly, check whether the serial slogan connected to the hardware is consistent with the serial slogan set by the software, and whether the serial port of the computer host works normally.
(3) Run the C0MDUMP command in the drive disk, the command is a D0S command, add a space and the code 1 or 2 of the serial port after the C0MDUMP when running, and touch the screen to see if there is any data rolled out. If data is rolled out, the hardware connection is normal, check whether the software settings are correct and whether there are conflicts with other hardware devices. If there is no data rollover, the hardware will fail, and the specific fault point is to be determined.
(4) Run the SAWDUMP command in the drive disk, the command is a D0S command, when running the program, the program will ask for the type of control card, the connection port number, and the transmission rate, and then the program will read the relevant data from the control card. Please note that if the AGC value of the X axis and the AGC value of the Y axis are in the lower left corner of the screen, if the value of either axis is 255, the transducer of that axis will fail and needs to be repaired.
(5) When performing the first correction after installing the driver, pay attention to the details of the system error. "No control card found", "Touch screen not connected", etc., check the corresponding parts according to the prompts. For example, whether the touch screen signal cable is firmly connected with the control card, whether the keyboard cable is all connected to the host, etc.
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