Datasheet

Intel® Server Board S1400SP TPS Appendix C: POST Code Diagnostic LED Decoder
Revision 1.0
Intel order number G64248-001
137
Table 65. POST Progress LED 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