Led large screen cloth power lines of the six steps
Full-color LED display failure are caused by a lot of improper installation, so the installation of full-color LED display in strict accordance with the steps to operate, especially when the first installation, this can reduce the error occurred, the following one Take a look at the full color LED display installation wiring method steps.
1, check the power supply voltage
Locate the DC positive and negative switching power supply, connect the 220V power cord to the switching power supply (confirm that the connection is correct, connect to the AC or NL terminal) and plug in the power supply. Will find a power supply will be a light, and then use a multimeter, DC file to measure the voltage between V + and V- to ensure that the voltage between 4.8V-5.1V, next to a knob, you can adjust the voltage of the Phillips screwdriver. In order to reduce the life of the screen to extend the life, in the case of low brightness requirements, you can adjust the voltage between 4.5V-4.8. After confirming the voltage is no problem, disconnect the power and continue assembling the other parts.
2, the first power off
Connect V + to red line, V-connected black line, connect to control card and LED unit board, black line control card and power supply GND. The red line connects the control card to the + 5V and the cell board of the VCC. One power cord per unit board. When finished, check that the connection is correct.
3, connection control and cell board
Use a good cable to connect. Attention direction, can not be reversed. Please note that the cell board 2 16PIN interface, one is the input, one is the output, close to the 74HC245 / 244 is the input, the control card connected to the input. Output is connected to the input of the next cell board.
4, connect the RS232 data cable
Will be a good data cable to connect the computer DB9 serial port, the other end connected to the control card, the DB9 5 feet (brown) connected to the control card GND, DB9 3 feet (brown white) connected to the control card RS232- RX. If your PC does not have a serial port, you can go to the computer city to buy a USB to RS232 serial port conversion line.
5, check the connection again
Is correct, black line is connected to-V and GND. The red line is connected to + V and VCC + 5V.
6, connected to 220V, open the downloaded software
Under normal circumstances, the power light is on, the control card is on and the screen is displayed. If it is not, check the connection. Or check for bug fixes. Set the parameters of the screen, send subtitles. Refer to the software instructions.