Appendix F: POST Code Diagnostic LED Decoder Intel® Server Board S2600CO Family TPS
Revision 1.4
Intel order number G42278-004
144
Checkpoint
Diagnostic LED Decoder
Description (with MRC Internal Minor Code)
1 = LED On, 0 = LED Off
Upper Nibble Lower Nibble
MSB LSB
8h 4h 2h
1h 8h 4h
2h
1h
LED #7 #6 #5 #4 #3 #2 #1 #0
03h = No memory installed. All channels are disabled.
E9h
1 1 1 0 1 0 0 1
Memory is locked by Intel
Trusted Execution Technology
and is inaccessible
EAh
1 1 1 0 1 0 1 0
DDR3 channel training error
01h = Error on read DQ/DQS (Data/Data Strobe) init
02h = Error on Receive Enable
03h = Error on Write Leveling
04h = Error on write DQ/DQS (Data/Data Strobe
EBh
1 1 1 0 1 0 1 1
Memory test failure
01h = Software memtest failure.
02h = Hardware memtest failed.
03h = Hardware memtest failure in Lockstep Channel
mode requiring a channel to be disabled. This is a fatal
error which requires a reset and calling MRC with a
different RAS mode to retry.
EDh
1 1 1 0 1 1 0 1
DIMM configuration population error
01h = Different DIMM types (UDIMM, RDIMM, LRDIMM)
are detected installed in the system.
02h = Violation of DIMM population rules.
03h = The third DIMM slot cannot be populated when QR
DIMMs are installed.
04h = UDIMMs are not supported in the third DIMM slot.
05h = Unsupported DIMM Voltage.
EFh
1 1 1 0 1 1 1 1
Indicates a CLTT table structure error
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