Lenovo System x3250 M4 - Microprocessor Problems

Table21.Memoryproblemsandactions(continued)
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby“(Trainedtechnicianonly)”,thatstepmustbeperformedonlybyatrained
technician.
•GototheIBMsupportwebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,hints,
tips,andnewdevicedriversortosubmitarequestforinformation.
SymptomAction
•Allbanksofmemoryareenabled.Theservermighthaveautomatically
disabledamemorybankwhenitdetectedaproblem,oramemorybank
mighthavebeenmanuallydisabled.
•Thereisnomemorymismatchwhentheserverisattheminimummemory
configuration.
2.ReseattheDIMMs,andthenrestarttheserver.
3.CheckthePOSTerrorlog:
•IfaDIMMwasdisabledbyasystems-managementinterrupt(SMI),replace
theDIMM.
•IfaDIMMwasdisabledbytheuserorbyPOST,reseattheDIMM;then,run
theSetuputilityandenabletheDIMM.
4.CheckthatallDIMMsareinitializedintheSetuputility;then,runmemory
diagnostics(see“RunningDSAPrebootdiagnosticprograms”onpage99).
5.Makesurethatthereisnomemorymismatchwhentheserverisattheminimum
memoryconfiguration..
6.AddonepairofDIMMsatatime,makingsurethattheDIMMsineachpair
match.
7.ReseattheDIMM.
8.Re-enableallDIMMsusingtheSetuputility,andthenrestarttheserver.
9.Replacethefollowingcomponentsoneatatime,intheordershown,restarting
theservereachtime:
a.DIMMs
b.(Trainedtechnicianonly)Replacethesystemboard
MultiplerowsofDIMMsina
branchareidentifiedasfailing.
Note:EachtimeyouinstallorremoveaDIMM,youmustdisconnecttheserverfrom
thepowersource;then,wait10secondsbeforerestartingtheserver.
1.ReseattheDIMMs;then,restarttheserver.
2.ReplacethefailingDIMM.
3.(Trainedtechnicianonly)Replacethesystemboard
Microprocessorproblems
Table22.Microprocessor'ssymptomsandactions
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby“(Trainedtechnicianonly)”,thatstepmustbeperformedonlybyatrained
technician.
Chapter4.Troubleshooting107