Computer Hardware User Manual

UniversalSerialBus(USB)portproblems
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•SeeChapter7“Partslisting,RS210Types6531,6532,6533,and6534”onpage175todeterminewhich
componentsarecustomerreplaceableunits(CRU)andwhichcomponentsareeldreplaceableunits(FRU).
•Ifanactionstepisprecededby“(Trainedservicetechnicianonly),”thatstepmustbeperformedonlyby
aTrainedservicetechnician.
•GototheLenovosupportWebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,
hints,tips,andnewdevicedriversortosubmitarequestforinformation.
SymptomAction
AUSBdevicedoesnotwork.1.RunUSBdiagnostics(see“POST”onpage19).
2.Makesurethat:
•ThecorrectUSBdevicedriverisinstalled.
•TheoperatingsystemsupportsUSBdevices.
3.MakesurethattheUSBcongurationoptionsaresetcorrectlyintheSetupUtility
(see“UsingtheSetupUtility”onpage197formoreinformation).
4.IfyouareusingaUSBhub,disconnecttheUSBdevicefromthehuband
connectitdirectlytotheserver.
Videoproblems
See“Monitorproblems”onpage54.
ErrorLEDs
Theillustrationshowsthesystem-boardLEDs.ThesystemboardhaserrorLEDsthatwillhelptolocate
thesourceoftheerror.Runthediagnosticprogramstondoutthecauseoftheerror(see“Runningthe
diagnosticprograms”onpage65
).
Newgraphictobeaddedinthenextdraft.
TheserverisdesignedsothatLEDsremainlitwhentheserverisconnectedtoanacpowersourcebutis
notturnedon,providedthatthepowersupplyisoperatingcorrectly.Thisfeaturehelpsyoutoisolatethe
problemwhentheoperatingsystemisshutdown.
Note:Whenyoudisconnectthepowersourcefromtheserver,youlosetheabilitytoviewtheLEDsbecause
theLEDsarenotlitwhenthepowersourceisremoved.Beforeyoudisconnectthepowersource,make
anoteofwhichLEDsarelit,includingtheLEDsthatarelitontheoperationinformationpanelandLEDs
insidetheserveronthesystemboard.
Manyerrorsarerstindicatedbyalitsystem-errorLEDonthecontrol-panelassemblyoftheserver.Ifthis
LEDislit,oneormoreLEDselsewhereintheservermightalsobelitandcandirectyoutothesource
oftheerror.
BeforeyouworkinsidetheservertoviewtheLEDs,readthesafetyinformationthatbeginsonpage
“ImportantSafetyInformation”onpage1
.
Ifanerroroccurs,viewtheserverLEDsinthefollowingorder:
1.Checkthecontrol-panelassemblyonthefrontoftheserver.Ifthesystem-errorLEDislit,itindicatesthat
anerrorhasoccurred.
2.CheckthefrontandrearoftheservertodeterminewhetheranycomponentLEDsarelit.
Chapter4.Diagnostics61