System Service Guide

Appendix C: LED Decoder
Intel
®
Server System R1000JP Family Service Guide 53
Checkpoint
Diagnostic LED Decoder
Description
1 = On, 0=Off
Upper Nibble Lower Nibble
MSB LSB
8h 4h 2h 1h 8h 4h 2h 1h
LED
#7 #6 #5 #4 #3 #2 #1 #0
0x24h 0 0 1 0 0 1 0 0
Programming timing parameters in the memory
controller
0x25h 0 0 1 0 0 1 0 1
Configuring memory parameters in the memory
controller
0x26h 0 0 1 0 0 1 1 0 Optimizing memory controller settings
0x27h 0 0 1 0 0 1 1 1 Initializing memory, such as ECC in it
0x28h 0 0 1 0 1 0 0 0 Testing memory
0xE4h 1 1 1 0 0 1 0 0
BIOS cannot communicate with DIMM (serial
channel hardware failure)
0xE6h 1 1 1 0 0 1 1 0
DIMM(s) failed Memory iBIST or Memory Link
Training failure
0xE8h 1 1 1 0 1 0 0 0 No memory available (system halted)
0xE9h 1 1 1 0 1 0 0 1
Unsupported or invalid DIMM configuration
(system halted)
0xEAh 1 1 1 0 1 0 1 0 DIMM training sequence failed (system halted)
0xEBh 1 1 1 0 1 0 1 1 Memory test failed (system halted)
0xECh 1 1 1 0 1 1 0 0
Unsupported or invalid DIMM configuration
(system halted)
0xEDh 1 1 1 0 1 1 0 1
Unsupported or invalid DIMM configuration
(system halted)
0xEBh 1 1 1 0 1 0 1 1
DIMM with corrupted SPD data detected (system
halted)
QuickPath Interconnect (QPI)
0xA0h 1 0 1 0 0 0 0 0 QPI Initialization
0xA1h 1 0 1 0 0 0 0 1 QPI Initialization
0xA2h 1 0 1 0 0 0 1 0 QPI Initialization
0xA3h 1 0 1 0 0 0 1 1 QPI Initialization
0xA4h 1 0 1 0 0 1 0 0 QPI Initialization