Lenovo System x3500 M4 - Universal Serial Bus (USB) Port Problems; Solving Power Problems; Solving Ethernet Controller Problems

UniversalSerialBus(USB)portproblems
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby'(Trainedtechnicianonly)',thatstepmustbeperformedonlybyaTrained
technician.
•GototheIBMsupportwebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,
hints,tips,andnewdevicedriversortosubmitarequestforinformation.
Table32.UniversalSerialBus(USB)portproblemsandactions
SymptomAction
AUSBdevicedoesnotwork.
1.Makesurethat:
•ThecorrectUSBdevicedriverisinstalled.
•TheoperatingsystemsupportsUSBdevices.
2.MakesurethattheUSBconfigurationoptionsaresetcorrectlyintheSetup
utility(see“UsingtheSetuputility”onpage107
formoreinformation).
3.IfyouareusingaUSBhub,disconnecttheUSBdevicefromthehuband
connectitdirectlytotheserver.
Solvingpowerproblems
Usethisinformationtosolvepowerproblems.
Powerproblemscanbedifficulttosolve.Forexample,ashortcircuitcanexistanywhereonanyofthe
powerdistributionbuses.Usually,ashortcircuitwillcausethepowersubsystemtoshutdownbecauseof
anovercurrentcondition.Todiagnoseapowerproblem,usethefollowinggeneralprocedure:
Step1.Turnofftheserveranddisconnectallpowercords.
Step2.Checkforloosecablesinthepowersubsystem.Alsocheckforshortcircuits,forexample,ifa
loosescrewiscausingashortcircuitonacircuitboard.
Step3.CheckthelitLEDsonthelightpathdiagnosticspanel(see“LightpathdiagnosticsLEDs”on
page135).
Step4.Removetheadaptersanddisconnectthecablesandpowercordstoallinternalandexternal
devicesuntiltheserverisattheminimumconfigurationthatisrequiredfortheservertostart(see
“Solvingundeterminedproblems”onpage161
).
Step5.Reconnectallacpowercordsandturnontheserver.Iftheserverstartssuccessfully,reseatthe
adaptersanddevicesoneatatimeuntiltheproblemisisolated.
Iftheserverdoesnotstartfromtheminimumconfiguration,see“Power-supplyLEDs”onpage139to
replacethecomponentsintheminimumconfigurationoneatatimeuntiltheproblemisisolated.
SolvingEthernetcontrollerproblems
UsethisinformationtosolvetheEthernetcontrollerproblems.
ThemethodthatyouusetotesttheEthernetcontrollerdependsonwhichoperatingsystemyouareusing.
Seetheoperating-systemdocumentationforinformationaboutEthernetcontrollers,andseetheEthernet
controllerdevice-driverreadmefile.
Trythefollowingprocedures:
160Systemx3500M4InstallationandServiceGuide