In short, an electronic display screen is composed of multiple combinable display devices (unit display panels or unit display boxes) and a set of corresponding controllers (dashboard or control system). Therefore, display panels (or unit boxes) of various specifications and controllers with various control technologies can be configured to create various LED displays to meet different environments and display requirements.

　　What precautions and maintenance should be done for electronic display screens?

　　1. Precautions for switching electronic display screens:

　　1. Switching sequence: When turning on the screen, first turn on the power. When turning off the screen, first turn off the screen, then turn off the power. If the computer is turned off first without turning off the display, the screen will brighten and burn the lamp tube, which can cause serious consequences. 2. When switching LED displays, there should be an interval of more than 5 minutes. 3. The power should only be turned on after the computer enters the engineering control software. 4. Do not turn on the screen in full-screen mode because the system's inrush current is large at this time. 5. Do not turn on the screen when it is out of control because the system's inrush current is large at this time. a. The computer has not entered the control software or other programs. b. The computer cannot be powered on. c. The control part is not powered on.

　　6. When the ambient temperature is too high or cooling conditions are poor, avoid keeping the display screen on for a long time. 7. If part of the LED display is very bright, turn off the screen promptly; the screen should not be kept on for a long time in this state. 8. If the display power switch frequently trips, immediately check the main screen or replace the power switch. 9. Regularly check the firmness of the hooks. If there is any looseness, adjust, reinforce, or replace the crane in time. 10. According to the environment where the display screen or parts are located, avoid insect bites; if necessary, place rodent repellents.

　　2. Changes and considerations for the control part:

　　1. For the computer and control part power lines, the neutral and live wires must not be reversed, so they must be correctly inserted into their original positions. If there are peripherals, connect them and after completion, test whether the casing is charged. 2. When moving computers or other equipment, before powering on, first confirm whether the connection cables and dashboard are loose. 3. The position and length of communication cables and flat connection cables cannot be freely changed. 4. If abnormalities such as short circuits, tripping, burning wires, or smoke occur after moving, do not repeat electrical tests; consult promptly.

　　Questions.

　　3. Software operation precautions for electronic display screens:

　　1. Software backup: WIN2003, WINXP, application programs, software installers, databases, etc. It is recommended to use "One-Key Recovery" software for convenient operation. 2. Be proficient in installation methods, recovery, and backing up original data. 3. Set parameters and confirm modifications to default preset data. 4. Be skilled in programming, operation, and editing. 5. Regularly scan for viruses, delete irrelevant data, and do not operate software systems by non-professionals.