Intel SR1500 - AXXMINIDIMM DDR-2 RAID Controller Cache Memory Manual page 99

Appendix B: POST Code Diagnostic LED Decoder
Diagnostic LED Decoder
Checkpoint G=Green, R=Red, A=Amber
MSB
Host Processor
0x10h OFF OFF
0x11h OFF OFF
0x12h OFF OFF
0x13h OFF OFF
Chipset
0x21h OFF OFF
Memory
0x22h OFF OFF
0x23h OFF OFF
0x24h OFF
0x25h OFF
0x26h OFF
0x27h OFF
0x28h G OFF
PCI Bus
0x50h OFF
0x51h OFF
0x52h OFF
0x53h OFF
0x54h OFF
0x55h OFF
0x56h OFF
0x57h OFF
USB
0x58h G
0x59h G
ATA / ATAPI / SATA
0x5Ah G
0x5Bh G
SMBUS
0x5Ch G
0x5Dh G
Local Console
0x70h OFF
0x71h OFF
0x72h OFF
Remote Console
0x78h G
0x79h G
0x7Ah G
Keyboard (PS2 or USB)
0x90h R OFF
0x91h R OFF
86
Table 62. Diagnostic LED POST Code Decoder
LSB
OFF R Power-on initialization of the host processor (bootstrap processor)
OFF A Host processor cache initialization (including AP)
G R Starting application processor initialization
G A SMM initialization
R G Initializing a chipset component
A OFF Reading configuration data from memory (SPD on DIMM)
A G Detecting presence of memory
G R OFF Programming timing parameters in the memory controller
G R G Configuring memory parameters in the memory controller
G A OFF Optimizing memory controller settings
G A G Initializing memory, such as ECC init
R OFF Testing memory
R OFF R Enumerating PCI busses
R OFF A Allocating resources to PCI busses
R G R Hot Plug PCI controller initialization
R G A Reserved for PCI bus
A OFF R Reserved for PCI bus
A OFF A Reserved for PCI bus
A G R Reserved for PCI bus
A G A Reserved for PCI bus
R OFF R Resetting USB bus
R OFF A Reserved for USB devices
R G R Resetting PATA / SATA bus and all devices
R G A Reserved for ATA
A OFF R Resetting SMBUS
A OFF A Reserved for SMBUS
R R R Resetting the video controller (VGA)
R R A Disabling the video controller (VGA)
R A R Enabling the video controller (VGA)
R R R Resetting the console controller
R R A Disabling the console controller
R A R Enabling the console controller
OFF R Resetting the keyboard
OFF A Disabling the keyboard
Intel order number D31982-006
Intel® Server System SR1550AL
Description
Revision – 1.3