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Checkpoint
MSB
8h
LED
#7
Chipset
0x21h
0
Memory
0x22h
0
0x23h
0
0x24h
0
0x25h
0
0x26h
0
0x27h
0
0x28h
0
®
Intel
Server System SR1695GPRX Service Guide
Table 14. Diagnostic LED POST Code Decoder
Diagnostic LED Decoder
1 = On, 0= Off
Upper Nibble
4h
2h
1h
#6
#5
#4
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
Lower Nibble
LSB
8h
4h
2h
#3
#2
#1
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
Description
1h
#0
Initializing a chipset
component
Reading configuration
data from memory (SPD
on FBDIMM)
Detecting presence of
memory
Programming timing
parameters in the memory
controller
Configuring memory
parameters in the memory
controller
Optimizing memory
controller settings
Initializing memory, such
as ECC init
Testing memory
145
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