Front Panel Leds - Sun Microsystems Sun Fire V480 Parts Installation And Removal Manual

Front Panel LEDs

Several front panel LEDs provide general system status, alert you to system
problems, and help you to determine the location of system faults.
During system startup, LEDs are individually toggled on and off to verify that each
one is working correctly. Other LEDs located on the front of the system work in
conjunction with specific fault LED icons. For example, a fault in the disk subsystem
illuminates the disk drive Fault LED next to the affected disk drive. Since all front
panel status LEDs are powered by the system's 5-volt standby power source, fault
LEDs remain lit for any fault condition that results in a system shutdown.
System Status LEDs
At the top left of the system as you look at its front are three system status LEDs.
The Power/OK LED and the system Fault LED provide a snapshot of the overall
system status. The Locator LED helps you to quickly locate a specific system even
though it may be one of dozens or even scores of systems in a room. The Locator
LED is at the far left in the cluster, and is lit by command from the administrator.
System status LEDs
Each system status LED has a corresponding LED on the back panel.
Chapter 1 Identifying Front and Back Panel Features 3