Switching power supply failure phenomenon: During work, there is no current output suddenly, and the protection indicator light flashes
Check content: 1. Check whether the temperature of the working environment is too high and whether the fan is working normally
Remedy: Eliminate fan faults and improve ventilation conditions
Check content: 2. Determine whether instantaneous overcurrent protection
Remedy: Reboot according to the boot procedure, whether the power supply can work normally
Check content: 3. Whether the input voltage is normal, whether there is overvoltage, undervoltage, and whether there is a phase loss in the three-phase input
Remedy: After eliminating the power supply failure of the distribution line, restart the machine according to the boot procedure
