Intel® Server System R2000WF Product Family Technical Product Specification
128
Table 78. MRC fatal error codes
Checkpoint
Diagnostic LED Decoder
Description
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
MRC Fatal Error Codes
E8h
1
1
1
0
1
0
0
0
No Usable Memory Error:
01h = No memory was detected via SPD read, or invalid config that
causes no operable memory. 02h = Memory DIMMs on all channels of
all sockets are disabled due to hardware memtest error. 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
DDR4 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.
EDh
1
1
1
0
1
1
0
1
DIMM Configuration/Population Error:
01h = Different DIMM types (RDIMM, LRDIMM) are detected installed
in the system.
02h = Violation of DIMM population rules.
03h = The third DIMM slot can not be populated when QR DIMMs
are installed.
04h = UDIMMs are not supported.
05h = Unsupported DIMM Voltage.
EFh
1
1
1
0
1
1
1
1
Indicates a CLTT table structure error.
