Figure 96. Diagnostic Led Placement Diagram; Table 12. Diagnostic Led Post Code Decoder - Intel SERVER SYSTEM SR2500AL User Manual

USB Port
Back edge of server board
Checkpoint
Host Processor
0x10h
0x11h
0x12h
0x13h
Chipset
0x21h
Memory
0x22h
0x23h
0x24h
0x25h
0x26h
0x27h
0x28h
128
USB Port

Figure 96. Diagnostic LED Placement Diagram

Table 12. Diagnostic LED POST Code Decoder

Diagnostic LED Decoder
G=Green, R=Red, A=Amber
MSB
OFF OFF OFF R
OFF OFF OFF A
OFF OFF G R
OFF OFF G A
OFF OFF R G
OFF OFF A OFF
OFF OFF A G
OFF G R OFF
OFF G R G
OFF G A OFF
OFF G A G
G OFF R OFF
Diagnostic LEDs
MSB LSB
LSB
Power-on initialization of the host processor
(bootstrap processor)
Host processor cache initialization (including AP)
Starting application processor initialization
SMM initialization
Initializing a chipset component
Reading configuration data from memory (SPD
on DIMM)
Detecting presence of memory
Programming timing parameters in the memory
controller
Configuring memory parameters in the memory
controller
Optimizing memory controller settings
Initializing memory, such as ECC init
Testing memory
Intel® Server System SR2500AL User's Guide
Description