Manual

34 SPARC Enterprise T5140 and T5240 Servers Administration Guide • February 2008
Interpreting System LEDs
The behavior of LEDs on the SPARC Enterprise T5140 and T5240 servers conform to
the American National Standards Institute (ANSI) Status Indicator Standard (SIS).
These standard LED behaviors are described in
TABLE 2-1.
The system LEDs have assigned meanings, described in
TABLE 2-2.
TABLE 2-1 Standard LED Behaviors and Values
LED Behavior Meaning
Off The condition represented by the color is not true.
Steady on The condition represented by the color is true.
Standby blink The system is functioning at a minimal level and ready to resume full
function.
Slow blink Transitory activity or new activity represented by the color is taking
place.
Fast blink Attention is required.
Feedback flash Activity is taking place commensurate with the flash rate (such as
disk drive activity).
TABLE 2-2 System LED Behaviors with Assigned Meanings
Color Behavior Definition Description
White Off Steady state
Fast blink 4-Hz repeating
sequence, equal
intervals on and
off.
This indicator helps you to locate a particular
enclosure, board, or subsystem.
Example: the Locator LED.
Blue Off Steady state
Steady On Steady state If blue is on, a removal action can be performed on
the applicable component with no adverse
consequences.
Example: the OK-to-Remove LED.
Yellow/Amber Off Steady state
Slow Blink 1-Hz repeating
sequence, equal
intervals on and
off.
This indicator signals new fault conditions. Service is
required. Not currently supported.
Example: the Service Required LED.