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Troubleshooting
Diagnostic LEDs
NOTE: The diagnostic LEDs only serve as an indicator of the progress through the
POST process. These LEDs do not indicate the problem that caused the POST
routine to stop.
The diagnostic LEDs are located on the front of the chassis next to the power button.
These diagnostic LEDs are only active and visible during the POST process. Once the
operating system starts to load, they turn off and are no longer visible.
The system now includes pre-POST and POST LEDs in an attempt to help pinpointing a
possible problem with the system easier and more accurate.
NOTE: The diagnostic lights will blink when the power button is amber or off, and
will not blink when it is blue. This has no other significance.
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