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Intel® Light Guided Diagnostics
7.5
Processor Fault LEDs
The workstation board provides a fault LED for each processor socket. These LEDs are located
near the processor sockets.
7.6
Post Code Diagnostic LEDs
POST code diagnostic LEDs are located on the back edge of the workstation board in the rear
I/O area of the workstation board between the PS/2 mouse/keyboard stacked connectors and
the serial connector.
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 given POST code to the POST code diagnostic LEDs
on the back edge of the workstation board. To assist in troubleshooting a system hang during
the POST process, you can use the Diagnostic LEDs to identify the last POST process
executed. See Appendix C for a complete description of how these LEDs are read and for a list
of all supported POST codes.
54
Figure 24. Processor Fault LED Locations
Intel order number: D66403-006
Intel® Workstation Board S5000XVN TPS
AF001035
Revision 1.5
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