Intel® Light Guided Diagnostics Intel® Server Board S3420GP TPS
Revision 2.4
Intel order number E65697-010
96
9.2 Post Code Diagnostic LEDs
During the system boot process, the BIOS executes several 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 on 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 executed.
Table 61. POST Code Diagnostic LED Location
A Status LED (For Intel
®
Server Board
S3420GPLX and S3420GPLC)
F Diagnostic LED #4
B ID LED G Diagnostic LED #3
C Diagnostic LED #7 (MSB LED) H Diagnostic LED #2
D Diagnostic LED #6 I Diagnostic LED #1
E Diagnostic LED #5 J Diagnostic LED #0 (LSB LED)
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