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172 Sun Fire V490 Server Administration Guide • August 2004
What Next
For detailed descriptions of service and normal modes, see:
■ OpenBoot PROM Enhancements for Diagnostic Operation
This document is included on the Sun Fire V490 Documentation CD.
How to Isolate Faults Using LEDs
While not a deep, formal diagnostic tool, LEDs located on the chassis and on
selected system components can serve as front-line indicators of a limited set of
hardware failures.
Before You Begin
You can view LED status by direct inspection of the system’s front or back panels.
Note – Most LEDs available on the front panel are also duplicated on the back
panel.
You can also view LED status remotely using RSC and Sun Management Center
software, if you set up these tools ahead of time. For details on setting up RSC and
Sun Management Center software, see:
■ Sun Remote System Controller (RSC) User’s Guide
■ Sun Management Center Software User’s Guide