Sun Fire[tm] B1600 LEDs

Use the LEDs on the individual system components to determine if the system is operating normally. We recommend you monitor the LEDs routinely on the SSCs, Power Supply Units, and server blades.

The LEDs can be off, on, or in some cases blinking slowly or flashing. When the fault LED is on (lit), this indicates that a fault has occurred in the component. A fault is any condition that is considered to be unacceptable for normal operation. When the fault LED is lit, you must take immediate action to clear the fault.

You can only remove a hot-swappable component when the blue OK/ready to Remove LED is lit.

Front Panel LEDs

Rear Panel LEDs

SCC, Blade, Chassis, and Power Supply Status Codes

Icon	Name	LED Function
	Chassis Locator	This white LED is lit by the "setlocator on/off" system controller command to locate the chassis.
	DC Present	This green LED lights when the power supply is on and outputting regulated power within specified limits.
	AC Present	This green LED lights whenever a proper AC voltage source is input to the power supply.

Power (green)	Fault (amber)	OK/ready to Remove (blue)	Indication	Corrective Action
Off	Off	Off	Component not operating. Fault condition unknown.	If all LEDs are off on the chassis, check your external power source. If the LEDs are all off on a particular component, issue the poweron command to that component.
Off	On	Off	Component not operating. Fault present.	You cannot remove a component from the system.
Off	Off	On	Component ready to remove. No fault present.	Remove the component from the chassis.
Off	On	On	Component ready to remove.	Remove the faulty component and replace it.
On	Off	Off	Normal component operation.	No action required.
On	On	Off	Component operating. Fault present.	Contact your Sun support representative to purchase a replacement component. Issue the poweroff -r or the removefru command to the faulty component. Then remove the component.
Slow blink (blades)	Off	Off	Blade is in standby mode.	No action required, but type poweron sn (where n is the number of a blade) when you want to power on the blade. If the blade is at the ok prompt, type boot to load the operating system. If it is not at the ok prompt, wait until it is. If it does not return to the ok prompt or the Solaris prompt, reset the blade from the sc> prompt.
Flashing (blades)	Off	Off	Blade booting.	No action required.

Caution: When you remove a PSU, the white Locator LED on the chassis's front and back panels starts to flash. This is to alert you to insert a new PSU within 10 minutes of removing the old one, otherwise there is a danger that the server blades in the chassis will overheat. When you have inserted the new PSU, the Locator LED will stop flashing.