First of all, connect the power supply by plugging the wire into the socket or strip. Plug the other end into the power supply removed from the host.
< br >
With the 24P whiteboard plug facing up, find a green wire and either black wire.
< br >
Find the corresponding jack for the green wire and the black wire under the 24P white plug, then insert one side of the conductor into the green wire jack and the other side into the black wire jack.
< br >
If the green light on the power supply is on and the fan is running, then the power supply is fine. If the power supply does not react after the conductor is connected, there is a problem with the power supply.
A constant current source is a power supply marked with an output voltage range and a constant current parameter.
The detection method of constant current source is as follows:
When unloaded, measure the output voltage to see if it is the maximum output voltage marked. If yes, normal, if not, abnormal.
Connect to the load, measure the output current, the output current should be stable, as marked current value.
If the constant current source is connected to the load in series, the current is almost unchanged if the number of loads is increased or decreased, the quality of the constant current source is good, and the reverse is bad.