2.9.2 System LED Indicators

The two system LEDs consist of a system health indicator and a fault indicator. The system health indicator lights continuously green to show that the system is functioning normally. The fault indicator lights when a problem is detected in the system. Because it is important to know that a fault exists in the system, the fault indicator remains lit whether the system is in normal operating mode, or is switched to Standby mode using the keyswitch.

When you first power on the system, the LEDs individually blink on and off to verify that each one is working correctly. After that, the LEDs operate as described in the following table.

Name	Icon	Description
Power-on/activity		This green LED lights continuously when the system power is on.
General fault		This yellow LED lights steadily when any fault is detected (including a fault reported by a power supply LED fault).