Intel SE7501WV2 manual Post Codes, Error Messages, and Error Codes, Post Progress Code LEDs

	BIOS		Intel® Server Board SE7501WV2 TPS
	Field	IPMI Definition	BIOS Specific Implementation
Event Data 3		7:0 OEM code 3 or unspecified	For format rev 0, if this byte is specified, it contains bits 15:8
			of the POST code at the time FRB-2 reset occurred (port 81
			code). If the BIOS only uses one byte POST codes, this byte
			will always be zero.

The following table provides examples of the event data fields for FRB-2 errors.

Table 58. Examples of Event Data Field Contents for FRB-2 Errors

Error type	Event Data 1	Event Data 2	Event Data 3
FRB-2 error, failing POST code information not available	0x03	0xFF	0xFF
FRB-2 error, BIOS uses 1-byte POST codes. The last POST	0xA3	0x60	0x0
code before FRB-2 reset was 0x60.
FRB-2 error, BIOS uses 1-byte POST codes. The last POST	0xA3	0x42	0x19
code before FRB-2 reset was 0x1942.

6.41 POST Codes, Error Messages, and Error Codes

The BIOS indicates the current testing phase during POST by writing a hex code to the Enhanced Diagnostic LEDs. See Table 25 for a list of supported POST progress codes. If errors are encountered, error messages or codes will either be displayed to the video screen, or if an error has occurred prior to video initialization, errors will be reported through a series of audio beep codes. POST errors are logged in to the System Event Log.

The error codes are defined by Intel and whenever possible are backward compatible with error codes used on earlier platforms.

6.41.1POST Progress Code LEDs

The SE7501WV2 provides LEDs to display POST progress codes. The purpose of the POST Progress Code LEDs is to provide a troubleshooting tool in the event of a system hang during POST. The LEDs will display the hex POST code for the last test the BIOS performed before the system hung.

The POST Progress Code LED feature consists of a hardware decoder and four dual color LEDs located on the back of the baseboard. During POST, the LEDs will display all normal POST progress codes representing the progress of the BIOS POST. Each code will be represented by a combination of colors from the four LEDs. The LEDs are in pairs of green and red. The POST progress codes are broken into two nibbles, an upper 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 nibble then both red and green LEDs are lit, resulting in an amber color. Likewise, if both bits are clear then the red and green LEDs are off.

122	Revision 1.0
	Intel reference number C25653-001