H3C Technologies H3C S5560 Series Switches - Manual (Page 8)

3
LEDs
A PSR720-56A has two status LEDs on its front panel. The following
table lists the LED status and description.
LED Status Description
Input status
LED (AC OK)
Steady green The power input is normal.
Off
No power input or the power
input is abnormal.
Output
status LED
(DC OK)
Steady green The power output is normal.
Steady red The power output is abnormal.
Off No power output.