Intel M20MYP1UR, Integration And Service Manual

Page: 82 / 106

Intel® Server System M20MYP1UR System Integration and Service Guide
82
Post Code
(Hex) Nibble
LED 3
(MSB)
LED 2 LED 1
LED 0
(LSB) Description
F2
Upper 1 1 1 1
Recovery PEIM (recovery started)
Lower 0 0 1 0
F3
Upper 1 1 1 1
Recovery PEIM (capsule found)
Lower 0 0 1 1
F4
Upper 1 1 1 1
Recovery PEIM (capsule loaded)
Lower 0 1 0 0
E8
Upper 1 1 1 0
No usable memory error
Lower 1 0 0 0
EA
Upper 1 1 1 0
DDR4 channel training error
Lower 1 0 1 0
EB
Upper 1 1 1 0
Memory test failure
Lower 1 0 1 1
ED
Upper 1 1 1 0
DIMM configuration/population error
Lower 1 1 0 1
EF
Upper 1 1 1 0
Indicates a CLTT table structure error
Lower 1 1 1 1
B0
Upper 1 0 1 1
Detect DIMM population
Lower 0 0 0 0
B1
Upper 1 0 1 1
Set DDR4 frequency
Lower 0 0 0 1
B2
Upper 1 0 1 1
Gather remaining SPD data
Lower 0 0 1 0
B3
Upper 1 0 1 1
Program registers on the memory controller level
Lower 0 0 1 1
B4
Upper 1 0 1 1
Evaluate RAS modes and save rank information
Lower 0 1 0 0
B5
Upper 1 0 1 1
Program registers on the channel level
Lower 0 1 0 1
B6
Upper 1 0 1 1
Perform the JEDEC defined initialization sequence
Lower 0 1 1 0
B7
Upper 1 0 1 1
Train DDR4 ranks
Lower 0 1 1 1