Lenovo ThinkServer RD240 - Universal Serial Bus (USB) Port Problems; Solving Power Problems

•Ifanactionstepisprecededby“(Trainedservicetechnicianonly),”thatstepmustbeperformedonlyby
atrainedservicetechnician.
SymptomAction
Yoususpectasoftware
problem.
1.Todeterminewhethertheproblemiscausedbythesoftware,makesurethat:
•Theserverhastheminimummemorythatisneededtousethesoftware.For
memoryrequirements,seetheinformationthatcomeswiththesoftware.
Ifyouhavejustinstalledanadapterormemory,theservermighthavea
memory-addressconict.
•Thesoftwareisdesignedtooperateontheserver.
•Othersoftwareworksontheserver.
•Thesoftwareworksonanotherserver.
2.Ifyoureceiveanyerrormessageswhileyouusethesoftware,seethe
informationthatcomeswiththesoftwareforadescriptionofthemessagesand
suggestedsolutionstotheproblem.
3.Contactthesoftwarevendor.
UniversalSerialBus(USB)portproblems
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•SeethepartslistinginChapter8“Partslisting,RD240Types1045,1046,1047,and1048”onpage93to
determinewhichcomponentsarecustomerreplaceableunits(CRUs)andwhichcomponentsareeld
replaceableunits(FRUs).
•Ifanactionstepisprecededby“(Trainedservicetechnicianonly),”thatstepmustbeperformedonlyby
atrainedservicetechnician.
SymptomAction
AUSBdevicedoesnotwork.
1.Makesurethat:
•ThecorrectUSBdevicedriverisinstalled.
•TheoperatingsystemsupportsUSBdevices.
•AstandardPS/2keyboardormouseisnotconnectedtotheserver.Ifitis,a
USBkeyboardormousewillnotworkduringthePOST.
2.MakesurethattheUSBcongurationoptionaldevicesaresetcorrectlyinthe
SetupUtilityprogram.
3.IfyouareusingaUSBhub,disconnecttheUSBdevicefromthehuband
connectitdirectlytotheserver.
Solvingpowerproblems
Powerproblemscanbedifculttosolve.Forexample,ashortcircuitcanexistanywhereonanyofthe
powerdistributionbuses.Usually,ashortcircuitwillcausethepowersubsystemtoshutdownbecauseof
anovercurrentcondition.Todiagnoseapowerproblem,usethefollowinggeneralprocedure:
1.Turnofftheserveranddisconnectallacpowercords.
2.Checkforloosecablesinthepowersubsystem.Alsocheckforshortcircuits,forexample,ifaloose
screwiscausingashortcircuitonacircuitboard.
3.Removetheadaptersanddisconnectthecablesandpowercordstoallinternalandexternaldevices
untiltheserverisattheminimumcongurationthatisrequiredfortheservertostart(see“Solving
undeterminedproblems”onpage23
fortheminimumconguration).
4.Reconnectallacpowercordsandturnontheserver.Iftheserverstartssuccessfully,replacethe
adaptersanddevicesoneatatimeuntiltheproblemisisolated.
22ThinkServerRD240HardwareMaintenanceManual