Post Code Diagnostic Leds; Figure 24. Post Code Diagnostic Led Location - Intel S5000XAL Technical Product Specification

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Intel Server Board S5000PAL / S5000XAL TPS Light Guided Diagnostics
7.5

Post Code Diagnostic LEDs

During the system boot process, BIOS executes a number of platform configuration processes, each of
which is assigned a specific hex POST code number. As each configuration routine is started, BIOS will
display the given POST code to the POST code diagnostic LEDs found on the back edge of the server
board. To assist in troubleshooting a system hang during the POST process, the diagnostic LEDs can be
used to identify the last POST process to be executed. See Appendix C for a complete description of
how these LEDs are read, and for a list of all supported POST codes.
TP02312

Figure 24. POST Code Diagnostic LED Location

Revision 1.4 69
Intel order number: D31979-007