SR1530HCLR Intel (CPU), SR1530HCLR Datasheet - Page 67

• Manufacturer Part Number: SR1530HCLR
• Manufacturer: Intel (CPU)

Specifications of SR1530HCLR

• Lead Free Status / RoHS Status: Not Compliant

Intel
During the system boot, the BIOS executes 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 on the back edge of the server
board. The Diagnostic LEDs identify the last POST process to be executed.
Each POST code is represented by a combination of colors from the four LEDs. The LEDs are
capable of displaying three colors: green, red, and amber. The POST codes are divided into an
upper nibble and a lower nibble. Each bit in the upper nibble is represented by a red LED and
each bit in the lower nibble is represented by a green LED. If both bits are set in the upper and
lower nibbles then both the red and green LEDs are lit, resulting in an amber color. If both bits
are clear, then the LED is off.
Example: The BIOS sends a value of ACh to the diagnostic LED decoder. The LEDs are
decoded as:
Since the red bits correspond to the upper nibble and the green bits correspond to the lower
nibble, the two are concatenated as ACh.
Revision 2.2
•
•
ACh
Result
®
Appendix D: POST Code Diagnostic LED Decoder
Back edge of baseboard
LEDs
USB Port
Server Board S5000VCL TPS
red bits = 1010b = Ah
green bits = 1100b = Ch
1
Amber
Red
USB Port
MSB
8h
1
Green
Figure 14. Diagnostic LED Placement Diagram
Table 42. Example POST Progress Code LED
Intel order number: D64569-006
0
Green
Red
Diagnostic LEDs
MSB
4h
1
Green
Appendix D: POST Code Diagnostic LED Decoder
LSB
1
Red
Red
2h
0
Green
0
Off
Red
LSB
1h
0
Green
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