Appendix D: POST Code Diagnostic LED Decoder
Intel
®
Server Board S5500BC TPS
Intel order number: E42249-003
Revision 1.0
102
Diagnostic LED Decoder
O = On, X=Off
Upper Nibble
Lower Nibble
MSB
LSB
Checkpoint
8h 4h 2h 1h 8h 4h 2h 1h
LED
#7 #6 #5 #4 #3 #2 #1 #0
Description
0xF5h O O O O X O X O Exiting
Sleep
state
0xF8h O O O O O X X X
Operating system has requested EFI to close boot services
(ExitBootServices ( ) Has been called)
0xF9h O O O O O X X O
Operating system has switched to virtual address mode
(SetVirtualAddressMap ( ) Has been called)
0xFAh O O O O O X O X
Operating system has requested the system to reset (ResetSystem
( ) has been called)
Pre-EFI Initialization Module (PEIM) / Recovery
0x30h X X O O X X X X Crisis
recovery
has been initiated because of a user request
0x31h X X O O X X X O Crisis
recovery
has
been initiated by software (corrupt flash)
0x34h X X O O X O X X Loading
crisis
recovery
capsule
0x35h
X
X
O
O
X
O
X
O
Handing off control to the crisis recovery capsule
0x3Fh X X O O O O O O Unable
to
complete crisis recovery capsule
Memory Error Codes (Accompanied by a beep code)
0xE8h
O O O X O X X X
No Usable Memory Error: No memory in the system, or SPD bad so
no memory could be detected
0xEBh O O O X O X O O Memory
Test
Error: memory failed Hardware BIST.
0xEDh
O O O X O O X O
Population Error: RDIMMs and UDIMMs cannot be mixed in the
system
0xEEh O O O X O O O X Mismatch
Error:
more than 2 Quad Ranked DIMMS in a channel.
