System Status LEDs

System status LEDs are located on the front of the switch. The following table describes the colors and the states for the LEDs.

Label or Type Color/State Meaning
PSU1, PSU2

(Power Supplies)

Steady green PSU is installed and providing power
Steady amber PSU is installed but input power is disconnected or unit fault detected
Off PSU is not installed
FAN Steady green All fans operating normally
Steady amber A fan has been removed or fault detected
Off No power to fan modules
SYS

(System)

Steady green System loaded properly and is ready
Steady amber Either the PSU or fan or both are faulty, not present, or the system has not loaded properly
Off CPU power is off
PWR

(Power)

Steady green Normal operation
Blinking green System in reset
Off Unit not operational
SECURE Steady blue Authentication complete
Very slow blinking blue (0.25Hz) Bypass authentication (debug only)
Fast blinking blue (4Hz) Authentication failed
Slow blinking blue (1Hz) Authenticating or updating images
Off Authentication begin or fault