Many failures of full-color LED display are caused by improper installation, so when installing full-color LED display, you need to strictly follow the steps, especially when installing for the first time. Strictly follow the steps to reduce the occurrence of errors. The following editor will explain to you the wiring methods and steps when installing a full-color LED display.
Check the power supply voltage
Find out the DC positive and negative connections to the switching power supply, connect the 220V power cord to the switching power supply, (after confirming the connection is correct, connect it to the AC or NL terminal) and plug it in. You will find that a light on the power supply will turn on. Then use a multimeter to measure the voltage between V plus and V- in the DC range to ensure that the voltage is between 4.8V-5.1V. There is a knob next to it, and you can adjust the voltage with a Phillips screwdriver. In order to reduce the heat generation of the screen and prolong its life, the voltage can be adjusted to between 4.5V-4.8 when the brightness requirement is not high. After confirming that there is no problem with the voltage, disconnect the power supply and continue to assemble other parts.
Full color led display
Turn off the power first
Connect V plus to the red wire and V- to the black wire, respectively connect to the control card and the LED unit board, and connect the black wire to the GND of the control card and the power supply. The red wire connects the plus 5V of the control card and the VCC of the unit board. 1 power cord per unit board. After completion, please check whether the connection is correct.
Connect RS232 data line
Connect one end of the prepared data cable to the computer's DB9 serial port, and the other end to the control card. Connect the DB9 pin 5 (brown) to the GND of the control card, and connect the DB9 pin 3 (brown and white) to the RS232- of the control card. RX. If your PC does not have a serial port, you can buy a USB to RS232 serial port conversion cable from the Computer City.
Check the connection again
Check whether the wiring is correct, the black wire is connected to -V and GND. The red wire connects plus V and VCC plus 5V.
Connect 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 normal, please check the connection. Or check error troubleshooting. Set screen parameters and send subtitles. Refer to the software instructions for details.
