LED
LED
mark
Status Description
DC power status LED
RPS
Steady yellow
The DC input is normal, and the AC power
receptacle has an input error or is not connected.
Off
No DC power input
AC or RPS input
If your switch is AC powered or DC powered, look at the system status LED to identify a power failure. If
the system status LED is off, a power supply failure has occurred. Check the following items:
•
The power cord is well connected to the switch, and the AC or DC receptacle on the switch and the
AC or DC power receptacle are normal.
•
The external AC power supply system, –48 VDC power source in the equipment room, or RPS
power supply system are operating properly.
•
The operating temperature of the switch is normal, and the power module has good ventilation
(over-temperature can cause a power module to stop working and enter the protection state).
Concurrent AC and RPS inputs
If your switch adopts both AC and DC power supplies, check the status of each input by referring to the
PWR LED and RPS LED. If the switch is concurrently powered by an AC and a DC power supply, look at
the system status LED and DC status LED to identify an AC or DC input failure.
1.
The system LED is off, the AC power supply and the DC power supply both have an input failure.
Check the following items:
•
The power cord is correctly connected, the AC or DC power receptacle of the switch is operational,
and the power socket is normal.
•
The external AC/–48 VDC/RPS power supply system is operating properly.
•
The switch is well connected to the external power system.
•
The operating temperature of the switch is normal, and the power module has good ventilation
(over-temperature can cause the power module to stop working and enter the protection state).
2.
The system status LED is on but the RPS status LED is steady yellow, an AC input failure has
occurred.
Check the following items:
•
The AC power cord is well connected to the switch, and the AC receptacle on the switch and the AC
power receptacle are normal.
•
The AC external power supply system is normal.
3.
If the system status LED is on but the RPS status LED is off, an RPS input failure has occurred.
Check the following items:
•
The power cord is correctly connected, the DC power receptacle of the switch is operational, and
the power socket is normal.
•
The external –48 VDC/RPS power supply system is operating properly.
•
The switch is well connected to the external power supply.
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