Appendix E: Post Code Diagnostic Led Decoder; Figure 68. Post Code Diagnostic Led Decoder - Intel S2600CP Family Technical Product Specification

Intel Server Board S2600CP and Server System P4000CP TPS

Appendix E: POST Code Diagnostic LED Decoder

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Appendix E: POST Code Diagnostic LED Decoder
During the system boot process, the 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, the BIOS displays the POST code to the POST Code Diagnostic LEDs 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 that was executed.
Each POST code is represented by a sequence of eight amber diagnostic LEDs. The POST
codes are divided into two groups of LEDs as shown in below figure.
The diagnostic LED #7 is labeled as "MSB", and the diagnostic LED #0 is labeled as "LSB".

Figure 68. POST Code Diagnostic LED Decoder

A – System Status LED
B – System ID LED
LSB 1 2 3 4 5 6 MSB – Diagnostic LED
Revision 1.1 193
Intel order number G26942-003