Mouse arrow does not move when you touch the screen, no position change occurs - Database & Sql Blog Articles

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Phenomenon: The mouse arrow does not move when you touch the screen, and no position change occurs.
Reason: There are many reasons for this phenomenon, one by one:
1 The dust or scale accumulated on the sound wave reflection stripe on the periphery of the surface acoustic wave touch screen is very serious, resulting in the touch screen not working;
2 The touch screen has failed;
3 The touch screen control card has failed;
4 The touch screen signal line has failed;
5 The serial port of the computer host has failed;
6 The operating system of the computer has failed;
7 The touch screen driver is installed incorrectly.
solve:
1 Observe the touch screen signal indicator. The lamp flashes regularly under normal conditions. It flashes once every second. When the screen is touched, the signal light is always on. After the touch is stopped, the signal light flashes.
2 If the signal light is still in the steady state when there is no touch, first check whether the touch screen needs cleaning; secondly, check whether the serial port number connected to the hardware matches the serial port number set by the software, and whether the serial port of the computer host is working normally.
3 Run the COMDUMP command in the driver disk. This command is a DOS command. Add a space and serial port code 1 or 2 after COMDUMP and touch the screen to see if data is rolled out. If the data is rolled out, the hardware connection is normal. Please check if the software settings are correct and conflict with other hardware devices. If there is no data to roll out, the hardware will fail, and the specific fault point is to be determined.
4 Run the SAWDUMP command in the driver disk. This command is a command under DOS. When running the program, the program will ask for the type of control card, the port number of the connection, and the transmission rate. Then the program will read the relevant data from the control card. Please pay attention to the AGC value of the AGC and Y axis of the X axis in the lower left corner of the screen. If the value of any axis is 255, the transducer of the axis will be faulty and need to be repaired.
5 When performing the first calibration after installing the driver, pay attention to the details of the system error. “The control card is not found”, “The touch screen is not connected”, etc., check the corresponding parts according to the prompts. For example, whether the touch screen signal line is firmly connected to the control card, and whether the keyboard takes all the wires to connect with the host.
6 If you still can't get rid of it, ask a professional to repair it.