1. The touch screen does not respond (fault phenomenon)
First check whether each wiring interface is loose, and then check whether there is a conflict between the serial port and the interrupt number. If there is a conflict, adjust the resources to avoid the conflict. Then check whether there are cracks on the surface of the touch screen. If there are cracks, replace them in time.
If the above parts are all normal, you can check the touch screen with the replacement method, first replace the control box, then replace the touch screen, and finally replace the host.
The following maintenance can be carried out:
1) Check whether the wires of the touch screen are connected correctly. One of the wires connected to the keyboard port of the host (take the 5V touch screen working voltage from the keyboard port) is connected. Please check the connection.
2) If the above conditions are not confirmed, please delete the touch screen driver and restart the computer to reinstall the driver.
3) If the touch screen has been used for a long period of time (3-4 years) and it is found that some areas of the touch screen cannot be touched, it may be that the touch screen is broken. Please replace the touch screen.
2. The touch screen has a long response time (fault phenomenon)
This may be caused by a virus on the host or system chaos.
1) First check whether the host has a virus, if there is, kill the virus first.
2) There is a problem with the system, check whether it can be adjusted, if not, reload the system.
4. The touch screen does not respond locally (fault phenomenon)
It is possible that part of the touch screen is scraped off by a hard object and cannot be repaired.
5. The touch screen is normal but the computer cannot be operated (fault phenomenon)
This may be because the touch screen control card receives the operation signal before the host starts to load the touch screen driver. You only need to restart the computer after the power is turned off.
6. The touch screen does not respond for the first time after installing the driver (trouble phenomenon)
First confirm whether the touch screen wiring is connected correctly, if not, connect all the wiring correctly after shutting down. Then check whether there is a conflict between the device and the serial port resource in the host, check the hardware devices and adjust them.
