Specifications

2
Installing Memory Modules
18
Mismatched DIMM combinations and SEL error events
Amemoryinitializationerroroccursifmemorychannelsarenotconsistentlypopulated
fromthelowest‐numberedslottothehighest‐numberedslot.UsingChannelAasan
exampleinFigure 2onpage 17,slotA0shouldbepopulatedfirst,thenA1andthenA2.
TheerroroccursifChannelAonlyhasA0populatedandChannelBonlyhasB1populated.
WhentheCPMbootsitperformsmemoryinitializationandvalidatestheDIMMslot
population.Ifamismatched(incorrect)combinationofDIMMsisdetectedtheBIOSlogsa
SELevent.SeeTable 23onpage 78fordetailsontheMemoryErrorssensor.
Mismatchedmemoryconfigurationsmustbecorrectedbyfollowingthe
recommendationsinSupportedDIMMcombinationsonpage 17.
Installing DIMMs
InstallingDIMMsconsistsofremovingtheDIMMcover,installingtheDIMMmemory
cards,replacingtheDIMMcover,andre‐installingtheCPMintheshelf.Thefollowing
sectionsdetailtheseprocedures.
WARNING! Observe appropriate ESD precautions when performing the procedures in this
chapter (see
Electrostatic discharge on page 8).
Removing the DIMM cover
1. PlacetheCPMonaflat,static‐freesurface.
2. RemovethetwoscrewsholdingtheDIMMcoverinplace(seeFigure 3onpage 18).
3. LiftofftheDIMMcover.
Figure 3. DIMM cover
Screws
DIMM
cover