Six operating steps make the wiring of full-color LED display more secure

Time:2018-10-13 Views:718

Many failures of LED display are caused by improper installation. Therefore, when installing full-color LED display, strict steps should be followed, especially the first installation.Strictly follow the steps to reduce the occurrence of errors. Please refer to the wiring method and steps for the installation of full-color LED display screen.

1. Check the power voltage: find the dc positive and negative connection switch power supply, connect the 220V power line to the switch power supply, (after confirming that the connection is correct, connect to AC or NL terminal) and plug in the power.It will be found that one of the power supply lights will be on, and then use the multimeter, dc file to measure the voltage between V+ and V-, make sure the voltage is between 4.8v and 5.1v, and there is a knob next to it, which can adjust the voltage with the cross screwdriver.To reduce screen heat and extend life, the voltage can be adjusted to between 4.5v and 4.8v in low-brightness situations.After confirming that there is no problem with the voltage, disconnect the power supply and continue to assemble other parts.

Power off: connect V+ to red line, V- to black line, respectively to control card and LED panel, and black line to GND of control card and power supply.The red line connects the control card to the +5V and the unit board to the VCC.1 power cord per unit plate.When done, check that the connection is correct.

Connection control and unit board: use good alignment and connection.Pay attention to the direction.Please note that the unit board has two 16PIN interfaces, one for input and one for output, close to 74hc245/244 for input, connecting the control card to the input.The output is connected to the input to the next cell board.

Connect the RS232 data cable: connect one end of the completed data cable to the DB9 serial port of the computer and the other end to the control card, connect the five legs of DB9 (brown) to the GND of the control card, and connect the three legs of DB9 (brown) to the rs232-rx of the control card.If your PC does not have a serial port, you can go to computer city to buy a USB to RS232 serial port conversion line.

5. Check the connection again: check if the connection is correct, and the black line is connected with -v and GND.The red line connects +V and VCC +5V.

6. Turn on 220V and turn on the downloaded software: under normal circumstances, the power lamp is on, the control card is on and the screen is displayed.If not, please check the connection.Or check for faulty repairs.Set screen parameters and send subtitles.Refer to the software instructions.

Master the wiring methods and steps of the above six LED display screens, nip the failure in the bud, and make LED display screens more safe and reliable!