Sun Microsystems Sun Fire V490 Parts Installation And Removal Manual page 34

Listed from left to right, the system status LEDs operate as described in the
following table.
TABLE 1-1
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4 Sun Fire V490 Server Parts Installation and Removal Guide • October 2005
System Status LEDs
Name Description
Locator This white LED is lit by Sun Management Center (Sun MC) or
Sun Remote System Control (RSC) software, or by Solaris
command, to locate a system. Refer to the Sun Fire V490 Server
Administration Guide for information about turning on the
Locator LED.
Fault This amber LED lights steadily when a system fault is
detected. For example, the system Fault LED lights when a
fault occurs in a power supply, disk drive, or cooling fan.
In addition to the system Fault LED, other fault LEDs may also
be lit, depending on the nature of the fault. If the system Fault
LED is lit, check the status of other fault LEDs on the front
panel to determine the nature of the fault.
During the boot process, this LED flashes for approximately
three seconds. If you press the Power button twice within the
three seconds, the system will come up with factory default
safe mode IDPROM variable settings, returning the system to
the ok firmware prompt. Refer to your Sun Fire V490 Server
Administration Guide for more information, and for information
about troubleshooting your server.
Power/OK This green LED lights continuously when the system power is
on.