In the process of using full-color LED display devices, it is inevitable that sometimes problems will occur. Today, we will introduce how to distinguish and judge the fault diagnosis method of full color LED display.

   Step 1: Check if the graphics card settings section is set up. If necessary, set the method in the disc electronic file, please refer to it.

   Step 2: Check the basic connection of the system, such as DVI cable, whether the network cable socket is correct, the connection between the main control card and the computer PCI plug, the serial cable connection, etc. The connection method has a legend, please refer to the reference carefully.

   Step 3: Check if the computer and LED power system meet the usage requirements. When the power of the LED screen is insufficient, when it is close to white (more power consumption), it will cause the screen to flicker, and prepare a suitable power supply according to the power requirements of the cabinet.

   Step 4: Check if the green light of the sending card flashes regularly, flashing to step 6. If it is not flashing, restart it. Check if the green light flashes regularly before entering win98/2k/xp, such as blinking to the second step. Please check if the DVI cable connection is connected. If the problem is not solved, one of the sending card, the graphics card and the DV cable I is faulty. Please repeat step 3 after replacing.

   Step 5: Please follow the software instructions to set or re-install and then set it until the green light of the sending card flashes, otherwise repeat step 3.

   Step 6: Check if the green light (data light) of the receiving card flashes synchronously with the green light of the sending card. If it flashes to step 8, check if the red light (power) is on. If it turns on the seventh step, it does not light up to check the yellow light (power supply). Protection) Is it bright, if it is not lit, check if the power supply is reversed or the power supply has no output. If it is bright, check if the power supply voltage is 5V. If the power is turned off, remove the adapter card and cable and try again. If the problem is not solved, the receiving card is faulty. , replace the receiving card, repeat step 6.

   Step 7: Check if the network cable is connected well or too long (must use the standard Super Category 5 network cable, the longest distance of the network cable without repeater is 100 meters), check whether the network cable is made according to the standard (please refer to the installation and setting) If the problem is not solved, the receiving card is faulty, replace the receiving card, and repeat step 6.

   Step 8: Check if the large screen power light is on. If it is not on, go to step 7. Check if the adapter card interface definition line matches the unit board. Note: After most screens are connected, there may be no screen or flower screen in a certain box. Because the RJ45 interface of the network cable is not securely connected, or the receiving card power is not connected, the signal is not passed, so please re-plug it. Network cable (or exchange), or plug in the receiving card power (pay attention to the direction) can solve the problem