Full color led display daily use the matters needing attention as well as common troubleshooting - Full color LED screen - knowledge

Full color led display for daily use cautions and common troubleshooting, daily use note 1. When using the LED display: open the PC first, and then turn on the LED display power 2. Closed LED display: close the LED display power supply first, then close 3 PCS. PC must modes, set fault solution don't change the phenomenon the screen no display on the ac power not to power the computer didn't open on computers in the LED studio presentation software communication lines break check the communication lines, to make correct bad connection control system to replace control system according to the recipient receives no power supply voltage of 5 v software set wrong to change the software Settings and control system in accordance with the whole screen flashing a signal control system change bad control system communication line loss check the communication lines, to make the right connection control system voltage of 5 v voltage is not normal control system software setup error to change with the software in control system Settings unit housing no light, no ac power check whether 3 core aviation plug connection fastening; Check whether the cable plug connection is fastening; Check the receiving card 5 v power supply; Check if above is correct, please change the receiving card. Unit module is not bright unit module unit module of voltage of 5 v voltage level signal line not connected between the connection level even the line between the input or output end HC245 bad replacement HC245 unit module block out half block unit module of signal check CP, SC, CT of all kinds of signals is normal not bright data to view the data signal of the first input is normal unit 2 feet MV16126D module block of CP, SC signal is short circuit or open circuit inspection at the corresponding level between the input and HC245 control signal or to check after half a block unit module is out of control, according to the normal level module at the corresponding level latch control signal SC short circuit or open circuit inspection at the corresponding level control part of the latch control signals between SC and HC245 is open circuit, whether the signal and other signal level after short circuit module, according to the same part of the uncontrolled clock pulse control signals at the corresponding levels CP short circuit or open circuit inspection at the corresponding level control part of the clock pulse control signals between the CP and HC245 is open circuit, the signal is short circuit and other signal unit module on 4 * 4 square lattice not bright MV16126D 23 feet and external resistance virtual welding, open circuit ( Including resistance is bad and ground wire is broken) Will MV16126D 23 feet and external resistance welding; With a jumper wire circuit connection; Change resistance MV16126D 22 feet empty welding, cut-off will MV16126D 22 feet to welding; With a jumper wire break in join point out of control LED lights to replace LED lights virtual welding will LED lights just two feet to welding; Check to control the LED lights MV16126D the corresponding output pin, welding short-circuit will again LED lights is negative, so do not short circuit breakers with a jumper wire connect circuit place normally on the LED lamp cathode and short circuit; Replace MV16126D