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Check whether the video card setting is set properly. If you need to set the method in the electronic file, please check it.
The second step:
Check the basic connection of the system, such as the DVI cable, whether the network cable socket is correct, the connection between the main control card and the computer's PCI slot, the serial cable connection, etc. The connection method already has a legend. Please consult the third step carefully:
Check whether the computer and LED power supply system meets the usage requirements.
When the power of the LED electronic display screen is insufficient, the display screen will flicker when it is nearly white (power consumption is large), and a suitable power supply is prepared according to the power requirements of the cabinet.
the fourth step:
Check whether the green light of the sending card flashes regularly. If the flashing turns to the sixth step, if it does not flash, restart it. Check whether the green light flashes regularly before entering win98/2k/xp. If the flashing turns to the second step, check the DVI cable. If the connection is OK, if the problem is not solved, the one of the sending card, graphics card, and DV line I is faulty, please replace it and repeat step 3.
the fifth step:
Please follow the software instructions to set or re-install and then set until the sending card flashes green, otherwise repeat step 3.
Step 6:
Check whether the green (data light) of the receiving card is blinking synchronously with the green light of the sending card. If the flashing turns to the eighth step, check whether the red light (power) is on. If it turns to the seventh step, it is off. Check whether the yellow light (power protection) is on. If not, check whether the power supply is reversed or if there is no output from the power supply. If it is bright, check whether the power supply voltage is 5V. If you turn off the power, remove the adapter card and cables and try again.
Step 7:
Check whether the network cable is well connected or is too long (must use the standard Super Category 5 network cable, and the maximum length of the network cable without the repeater is 100 meters). Check whether the network cable is manufactured according to the standard (please check system installation and settings). Failed to solve the failure of the receiving card, replace the receiving card and repeat the sixth step.
Step 8:
Check if the big screen power light is on. If it does not turn on, check if the adapter card interface definition line matches the cell board.
Note: After most of the LED display screens are connected, there may be partial screens or screens. The RJ45 interface of the network cable is not firmly connected, or the power of the receiving card is not connected. As a result, the signal is not transmitted. Please re-plug the network cable (or exchange), or plug in the receiving card power (note the direction) can solve the problem.
LED display fault diagnosis
The first step: