What are the five common problems with touch screens? How to solve them?

Fault symptom One:

1. Phenomenon description: Touch does not respond, click on the screen cursor and it does not move.

2. Reason analysis:

① Is the driver installed correctly;

② Check if the connection cable between the touch screen and touch card is normal;

③ Check if the connection cable between the touch card and the motherboard is normal;

④ Whether the touch screen or touch card is damaged or abnormal;

⑤ Is there any error message in the operating system (Windows);

⑥ Is there any hardware or software conflict or incompatibility between the operating system (Windows) and the touch screen.

3. Solution:

① Install the driver correctly, and pay attention to two points: one is to remove the RS232 interface option during the installation of the resistance screen driver (see the manual for details), and the other is that the capacitive screen does not require manual installation of the driver, and the operating system (Windows) will automatically recognize it;

② Check if the connection cable between the touch card and the built-in USB plug on the motherboard is normal. It can be reinserted or replaced for testing, but it is necessary to pay attention to the correct position and direction of the plug to avoid burning the circuit;

③ Check if the connection cable between the touch screen and the touch card is normal. It can be reinserted or replaced for testing, but it is necessary to pay attention to the correct position and direction of the plug to avoid burning the circuit;

④ Check if the touch screen or touch card is damaged, replace the touch screen or touch card for testing;

⑤ If an error message appears in the operating system (Windows), you can choose to replace another host or reinstall the operating system;

⑥ When there is a hardware or software conflict or incompatibility between the operating system (Windows) and the touch screen, please replace the operating system version.

Allen-Bradley 2711P-T7C22D9P Graphic Terminal

Fault Symptom Two:

1. Phenomenon description: The touch position is different from the display cursor position (deviation or reverse or the main and secondary screens are reversed).

2. Reason analysis:

①Whether an incorrect calibration has been performed;

②Calibration is not performed after changing the resolution of the monitor;

③Whether the current touch card has electromagnetic interference from other high-frequency equipment;

④The touch screen or touch card may be damaged or abnormal;

3. Solution:

①Resistive touch screen calibration needs to be cleared and calibrated first in the driver program, and then the linear setting can be used to perform 9-point or 25-point linear setting to calibrate accurately. At the same time, attention should be paid: when doing calibration settings, the calibration points on the eyes and the screen must be Vertically, and then click the center point with the stylus; in general, capacitive screens do not need to be calibrated, first check whether the connection between the touch screen cable and the touch card is loose or skewed, and then reconnect correctly after power off, if manual calibration is required , open the Tablet PC in the control panel, click Calibrate, and follow the screen prompts to calibrate;

②Recalibrate under the new resolution (calibration method is the same as above);

③Replace the connection cable between the touch card and the main board (you can choose the cable body with a magnetic ring and pay attention to the correct plug direction and position), or move the touch card to a place with less interference and then test;

④Replace the touch screen or touch card and test again.

MITSUBISHI A960GOT-EBD Touch Screen

Fault Symptom Three:

1. Phenomenon description: the cursor is fixed at a certain point on the screen

2. Reason analysis:

①Whether an incorrect calibration has been performed;

②The touch screen is installed too tightly or the installation is deviated, and the outer frame is pressed in the touch area;

③The touch screen or touch card may be damaged or abnormal.

3. Solution:

① Re-calibrate correctly (the method is the same as fault 2 ①);

② Properly adjust the tightness of the screen frame or reinstall the touch screen;

③Replace the touch screen or touch card and test again.

Schneider XBTF011110 Control Screen

Fault Symptom Four:

1. Phenomenon description: A certain area of the touch screen does not respond

2. Reason analysis:

①Whether an incorrect calibration has been performed;

② Is it consistent with the current drive;

③The screen may be damaged or abnormal.

3. Solution:

① Re-calibrate correctly (the method is the same as fault 2 ①);

② Uninstall the incorrect driver, and then install the correct driver after restarting (see the manual for details on the installation method);

③Replace the touch screen or touch card and test again.

Allen-Bradley 2711-B5A1 Touch Screen

Fault Symptom five:

1. Phenomenon description: the cursor jumps on the screen

2. Reason analysis:

①Whether the temperature of the current touch card is too high or there is electromagnetic interference from other high-frequency equipment;

②The touch card power supply is unstable;

③The touch screen or touch card may be damaged or abnormal.

3. Solution:

①Replace the connection cable between the touch card and the main board (you can choose the cable body with a magnetic ring and pay attention to the correct plug direction and position), or lower the temperature of the touch card or move it to a place with less interference before testing;

②Replace the power adapter or a better-quality power strip;

③Replace the touch screen or touch card and test again.

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