Intel
®
Server System R1000WF Product Family System Integration and Service Guide
97
Table 7. MRC Fatal Error Codes
Checkpoint
Diagnostic LED Decoder
Description
1
= LED On,
0
= LED Off
Upper Nibble
(Amber - Read 1st)
Lower Nibble
(Green - Read 2nd)
MS
B
LS
B
8h
4h
2h
1h
8h
4h
2h
1h
MRC Fatal Error Codes
E8h
1
1
1
0
1
0
0
0
No usable memory error
01h = No memory was detected from 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 3rd DIMM slot cannot 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
