Unlike LED lighting products, the display will have an additional "assembly" link in the application process, and the assembly of the display is not just as simple as putting together a few components, which will also involve a lot of technical parameters, the system also There will be different reactions, it can be said that assembly is an absolute technical task. What are the main points of attention in the LED display assembly process? How to eliminate and solve the problem of assembly? And look at the professional answers compiled by Xiaobian for you:
01. What could be the reason for the failure to load?
The failure to load may be due to the following reasons, please compare with your operation according to the listed items:
A. Make sure that the control system hardware is properly powered on. (+ 5V)
B. Check to make sure that the serial cable used to connect to the controller is a straight-through cable, not a crossover cable.
C. Check to make sure that the serial cable is intact and there is no looseness or shedding at both ends.
D. Compare the LED display control software and the control card you choose to choose the correct product model, correct transmission method, correct serial port number, correct baud rate, and set the control correctly according to the DIP switch diagram provided in the software Address bits and baud rate on the system hardware.
E. Check if the jumper cap is loose or falls off; if the jumper cap is not loose, please make sure the jumper cap is in the correct direction.
F. If it still fails to load after the above checks and corrections, please use a multimeter to measure whether the serial port of the connected computer or control system hardware is damaged. In order to confirm whether it should be returned to the computer manufacturer or the control system hardware is returned to the test.
02. What could be the reason for the lack of communication?
The reasons for the lack of communication and the failure to load are probably the same, which may be caused by the following reasons, please compare with your operation according to the listed items:
A. Make sure that the control system hardware is properly powered on. (+ 5V)
B. Check to make sure that the serial cable used to connect to the controller is a straight-through cable, not a crossover cable.
C. Check to make sure that the serial cable is intact and there is no looseness or shedding at both ends.
D. Compare the LED display control software and the control card you choose to choose the correct product model, correct transmission method, correct serial port number, correct baud rate, and set the control correctly according to the DIP switch diagram provided in the software Address bits and baud rate on the system hardware.
E. Check if the jumper cap is loose or falls off; if the jumper cap is not loose, please make sure the jumper cap is in the correct direction.
F. If it still fails to load after the above checks and corrections, please use a multimeter to measure whether the serial port of the connected computer or control system hardware is damaged. In order to confirm whether it should be returned to the computer manufacturer or the control system hardware is returned to the test.
03. Why does the system prompt "Please connect the LED display controller"?
Many customers and friends directly download the "LED display control system" from the "download center" on the company's website. The prompt "Please connect the LED display controller" will appear after 20 minutes of operation after installation. This is due to the system During the test period, no reason for plausible control system hardware was detected.
At this time, please connect one end of the hardware of the LED display control system you purchased to the computer, and the other end to the HUB distribution board. The cable socket of the HUB distribution board is connected to the interface of each unit part of the LED display.
After the connection is completed, you can enter the "Setting Screen Parameters" in the "Settings" to set the relevant parameters. After completion, close and then reopen the software. At this time, the words "Connection Successful" will appear above the software. At this point, the system has detected the hardware of the display control system and can be used normally without any time limit.
04. Why does the LED display control system hardware show a bright line or "flower screen" for a few seconds when it is just powered on?
After connecting the display controller to the computer, the HUB distribution board and the display properly, you need to provide + 5V power to the controller to make it work properly (in this case, do not directly connect with 220V voltage). At the moment of power-on, a bright line or "flower screen" will appear on the display for a few seconds. This bright line or "flower screen" is a normal test phenomenon, reminding the user that the display screen will start to work normally.
Within 2 seconds, this phenomenon is automatically eliminated, and the display enters the normal working state.
05. What does automatic or manual brightness adjustment mean?
Brightness adjustment refers to the adjustment made between the darkest and the brightest that the display can display. Instead of light adjustment.
The automatic brightness adjustment is based on the different brightness that should appear in different time periods, and is automatically adjusted to a predetermined brightness by the control system of the LED display screen.
Manual brightness adjustment means that the end user makes the LED display screen reach a specified brightness by operating the control system of the LED display screen.
06. Why is nothing displayed on the display when everything is normal?
When the controller is set up and the connection cable is properly connected, sometimes the LED display screen will not display, which is generally caused by one of the following reasons, please check it:
A. Whether the LED display is normally powered on.
B. Whether the connection between the HUB distribution board and the display is reversed.
C. Whether the program edited and sent is empty.
07. The whole screen of the unit board is not bright or dark.
A. Visually check whether the power cable, the 26P cable between the unit boards and the power module indicator are normal.
B. Use a multimeter to measure whether the unit board has normal voltage, and then measure whether the voltage output of the power supply module is normal. If not, it is determined that the power supply module is bad.
C. The voltage of the power supply module is low. Adjust the fine adjustment (fine adjustment of the power module near the indicator) to make the voltage reach the standard. 08. What causes the black screen on the LED display?
In the process of using the control system, we occasionally encounter the phenomenon of black screen on the LED display. The same phenomenon may be caused by a variety of reasons, and even the process of turning the display black becomes different for different operations or different environments. For example, it may be black at the moment of power-on, it may be black during the loading process, or it may be black after the transmission is completed, and so on. When encountering this phenomenon, please note that you can refer to the following aspects to judge the "fault":
A. Please make sure that all hardware including the control system has been powered on correctly. (+ 5V, don't connect reversely or wrongly)
B. Check and repeatedly confirm whether the serial cable used to connect to the controller is loose or falling off. (If it becomes black during the loading process, it may be due to this reason, that is, the communication line is interrupted due to the loosening of the communication line during the communication process, so the screen is black. Do not think that the display body does not move, the line cannot be loose, please Check it out yourself, it's important for you to solve the problem quickly.)
C. Check and confirm whether the LED display panel and the HUB distribution board connected to the main control card are tightly connected or inserted backwards.
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