Today's led display screens are widely used in all walks of life, whether in stations or shopping malls, led display screens are almost everywhere. However, in the practical application of led display screens, many users always complain that there is nowhere to start when there is an abnormal signal on the led display screen. So what are the common abnormal signals of the led display screen?
1. EN enable signal: when this signal appears, it is usually a control system problem. The common manifestation is that the LED display is too bright or too dark. The solution is very simple. You can modify the protocol or connect to the system customized by the manufacturer. To solve the problem, if the problem is really complicated, the light transmitting module and the receiving module can be disassembled and sent back to the manufacturer for repair. Usually, it can be returned in about ten days.
2. ABCD line signal: When this problem occurs, it usually manifests as the display content is misplaced or the screen overlaps. The solution is: turn on the AB signal in ABCD, turn off other signals, and then adjust the maximum range of binary to 4 ones, that is, sixteen lines.
3. CLK clock signal: its function is to provide shift pulses for the register. When this signal is abnormal, the content of the led display screen will be broken up, and the entire screen cannot display the content; the solution is to check whether the data is The same as the CLK clock signal, only when the data and the CLK clock signal are the same, the display data can be transmitted normally.
