Allied Telesis AR740 RPS Redundant Power Supply - Manual (Page 6)

6 AR740 RPS
C613-04025-01 REV F
Fault Indicators and What They Mean
The LEDs on the rear panel indicate the RPS’s operational status.
If an LED indicates a fault, follow these steps:
1. Check that all cable connections are correct and secure.
2. Check that both the RPS and the router are switched ON.
3. Check that the RPS is receiving the correct AC voltage.
4. If the LEDs indicate a router fault, verify that the fault exists (check the
router’s fans and LEDs) and, if necessary, replace the router or have it
serviced by authorised service personnel.
If the LEDs still indicate a fault, but no fault exists on the router or power
supply circuits, or if the LEDs indicate an RPS fault, contact your authorised
Allied Telesis distributor or reseller.
LED State Function
Power Green The RPS unit is receiving AC power and the
voltage is within an acceptable range.
RPS Fan Fault Amber The RPS is switched OFF.
Mains power to the RPS has failed.
An RPS fan has failed.
Off Normal operation.
Main PSU Fault Amber The corresponding router is switched OFF or its
PSU has failed.
Mains power to the router has failed.
The DC cable between the router and RPS is not
connected.
The RPS is supplying power to the router.
Off Normal operation.
RPS PSU Fault Amber The RPS is switched OFF or its PSU has failed.
Mains power to the RPS has failed.
The DC cable between the corresponding router
and RPS is not connected.
Off Normal operation.
Main Fan Fault Amber The DC cable between the corresponding router
and RPS is not connected.
A main router fan has failed.
Off Normal operation.