Lenovo x3250 m6 - Monitor Problems

Table14.Memoryproblemsandactions(continued)
SymptomAction
5.AddonepairofDIMMsatatime,makingsurethattheDIMMsineachpair
match.
6.ReseattheDIMM.
7.Re-enableallDIMMsusingtheSetupUtility,andthenrestarttheserver.
8.Replacethefollowingcomponentsoneatatime,intheordershown,restarting
theservereachtime:
a.DIMMs
b.(Trainedtechnicianonly)systemboard
MultiplerowsofDIMMsina
branchareidentifiedasfailing.
1.ReseattheDIMMs;then,restarttheserver.
2.ReplacethefailingDIMM.
3.(Trainedtechnicianonly)Replacethesystemboard
Amemoryerroroccurs
indicatingthatonememory
moduleinachannelisfailing.
Forexample,ifyoususpectmemorymoduleinslot1orslot2isfailing,dothe
following:
1.Exchangememorymoduleinslot1withmemorymoduleinslot3.
2.Restarttheserver.
3.Checkwhetherthiserrorstilloccurs.
a.Ifyes,itmeansthatmemorymoduleinslot2isfailing.Then,replace
memorymoduleinslot2withanewmemorymodule.
b.Ifno,itmeansthatmemorymoduleinslot1isfailing.Then,replacememory
moduleinslot1withanewmemorymodule.
Formoreinformation,refertothetipfilesat:
http://www.lenovo.com/support
Monitorproblems
SomeLenovomonitorshavetheirownself-tests.Ifyoususpectaproblemwithyourmonitor,seethe
documentationthatcomeswiththemonitorforinstructionsfortestingandadjustingthemonitor.Ifyou
cannotdiagnosetheproblem,callforservice.
Table15.Monitorandvideosymptomsandactions
SymptomAction
Testingthemonitor.
1.Makesurethatthemonitorcablesarefirmlyconnected.
2.Tryusingadifferentmonitorontheserver,ortryusingthemonitorthatisbeing
testedonadifferentserver.
3.Runthediagnosticprograms.Ifthemonitorpassesthediagnosticprograms,
theproblemmightbecausedbyavideodevicedriver.
4.(Trainedtechnicianonly)Replacethesystemboard.
Thescreenisblank.
1.IftheserverisattachedtoaKVMswitch,bypasstheKVMswitchtoeliminateit
asapossiblecauseoftheproblem:connectthemonitorcabledirectlytothe
correctconnectorontherearoftheserver.
2.Makesurethat:
•Theserveristurnedon.Ifthereisnopowertotheserver,see“Power
problems”onpage69
.
•Themonitorcablesareconnectedcorrectly.
•Themonitoristurnedonandthebrightnessandcontrastcontrolsare
adjustedcorrectly.
•NoPOSTerrorsaregeneratedwhentheserveristurnedon.
66LenovoSystemx3250M6InstallationandServiceGuide