Intel
®
Server System R2000WT Product Family System Integration and Service Guide
113
Table 7. 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 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.
3h = 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
3h = 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 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.
EFh
1
1
1
0
1
1
1
1
Indicates a CLTT table structure error
