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.