Lenovo x3550 M5 - Solving Undetermined Problems

•ChecktheEthernetcontrollerLEDsontherearpaneloftheserver.TheseLEDsindicatewhetherthere
isaproblemwiththeconnector,cable,orhub.
–TheEthernetlinkstatusLEDislitwhentheEthernetcontrollerreceivesalinkpulsefromthehub.Ifthe
LEDisoff,theremightbeadefectiveconnectororcableoraproblemwiththehub.
–TheEthernettransmit/receiveactivityLEDislitwhentheEthernetcontrollersendsorreceivesdata
overtheEthernetnetwork.IftheEthernettransmit/receiveactivityisoff,makesurethatthehuband
networkareoperatingandthatthecorrectdevicedriversareinstalled.
•ChecktheLANactivityLEDontherearoftheserver.TheLANactivityLEDislitwhendataisactiveon
theEthernetnetwork.IftheLANactivityLEDisoff,makesurethatthehubandnetworkareoperating
andthatthecorrectdevicedriversareinstalled.
•Checkforoperating-system-specificcausesoftheproblem.
•Makesurethatthedevicedriversontheclientandserverareusingthesameprotocol.
IftheEthernetcontrollerstillcannotconnecttothenetworkbutthehardwareappearstobeworking,the
networkadministratormustinvestigateotherpossiblecausesoftheerror.
Solvingundeterminedproblems
IfDynamicSystemAnalysis(DSA)didnotdiagnosethefailureoriftheserverisinoperative,usethe
informationinthissection.
Ifyoususpectthatasoftwareproblemiscausingfailures(continuousorintermittent),see“Software
problems”onpage87
.
CorrupteddatainCMOSmemoryorcorruptedUEFIfirmwarecancauseundeterminedproblems.Toreset
theCMOSdata,usetheCMOSjumpertocleartheCMOSmemoryandoverridethepower-onpassword;
seeTable1“Systemboardjumpers”onpage28formoreinformation.IfyoususpectthattheUEFIfirmware
iscorrupted,see“Recoveringtheserverfirmware(UEFIupdatefailure)”onpage92.
Ifthepowersuppliesareworkingcorrectly,completethefollowingsteps:
Step1.Turnofftheserver.
Step2.Makesurethattheserveriscabledcorrectly.
Step3.Removeordisconnectthefollowingdevices,oneatatime,untilyoufindthefailure.Turnonthe
serverandreconfigureiteachtime.
•Anyexternaldevices.
•Surge-suppressordevice(ontheserver).
•Printer,mouse,andnon-Lenovodevices.
•Eachadapter.
•Harddiskdrives.
•Memorymodules.Theminimumconfigurationrequirementis2GBDIMMinslot1.
Step4.Turnontheserver.
Iftheproblemissolvedwhenyouremoveanadapterfromtheserverbuttheproblemrecurswhenyou
reinstallthesameadapter,suspecttheadapter;iftheproblemrecurswhenyoureplacetheadapterwith
adifferentone,suspecttherisercard.
Ifyoususpectanetworkingproblemandtheserverpassesallthesystemtests,suspectanetworkcabling
problemthatisexternaltotheserver.
90LenovoSystemx3550M5InstallationandServiceGuide