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Appendix F: POST Code Diagnostic LED Decoder
Diagnostic LED Decoder
1 = LED On, 0 = LED Off
Checkpoint
Upper Nibble
MSB
8h
4h
LED
#7
#6
#5
E9h
1
1
1
EAh
1
1
1
EBh
1
1
1
EDh
1
1
1
EFh
1
1
1
146
Lower Nibble
2h
1h
8h
4h
2h
#4
#3
#2
#1
0
1
0
0
0
1
0
1
0
1
0
1
0
1
1
0
0
1
1
1
Intel order number G42278-002
Intel® Server Board S2600CO Family TPS
Description (with MRC Internal Minor Code)
LSB
1h
#0
disabled due to hardware memtest error.
03h = No memory installed. All channels are disabled.
Memory is locked by Intel
1
and is inaccessible
DDR3 channel training error
01h = Error on read DQ/DQS (Data/Data Strobe) init
0
02h = Error on Receive Enable
03h = Error on Write Leveling
04h = Error on write DQ/DQS (Data/Data Strobe
Memory test failure
01h = Software memtest failure.
02h = Hardware memtest failed.
1
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.
DIMM configuration population error
01h = Different DIMM types (UDIMM, RDIMM, LRDIMM)
are detected installed in the system.
02h = Violation of DIMM population rules.
1
03h = The 3rd DIMM slot cannot be populated when QR
DIMMs are installed.
04h = UDIMMs are not supported in the 3rd DIMM slot.
05h = Unsupported DIMM Voltage.
Indicates a CLTT table structure error
1
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Trusted Execution Technology
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