Lenovo System x3500 M4 - Page 148

lightpathdiagnosticspanel,thenonthefailedcomponent.ByviewingtheLEDsinaparticularorder,you
canoftenidentifythesourceoftheerror.
WhenLEDsarelittoindicateanerror,theyremainlitwhentheserveristurnedoff,providedthattheserveris
stillconnectedtopowerandthepowersupplyisoperatingcorrectly.
BeforeyouworkinsidetheservertoviewlightpathdiagnosticsLEDs,readthesafetyinformation“Safety”
onpagevand“Handlingstatic-sensitivedevices”onpage37.
Ifanerroroccurs,viewthelightpathdiagnosticsLEDsinthefollowingorder:
1.Lookattheoperatorinformationpanelonthefrontoftheserver.
•IfthechecklogLEDislit,itindicatesthatanerrorormultipleerrorshaveoccurred.Thesourcesof
theerrorscannotbeisolatedorconcludedbyobservingthelightpathdiagnosticsLEDsdirectly.A
furtherinvestigationintoIMM2system-eventlogorsystem-errorlogmightberequired.
•Ifthesystem-errorLEDislit,itindicatesthatanerrorhasoccurred;gotostep2.
Thefollowingillustrationshowstheoperatorinformationpanel.
System error LED
Check log LED
System locator LED
Power-on LED
Ethernet activity LED
Figure89.Operatorinformationpanel
ThefollowingtabledescribestheLEDsontheoperatorinformationpanelandsuggestedactionsto
correctthedetectedproblems.
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntilthe
problemissolved.
•Ifanactionstepisprecededby'(Trainedtechnicianonly)',thatstepmustbeperformedonlyby
aTrainedtechnician.
•GototheIBMsupportwebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,
hints,tips,andnewdevicedriversortosubmitarequestforinformation.
Table10.ThesuggestedactionstocorrectthedetectedproblemforeachLEDlight
LEDDescriptionAction
Systemlocator(blue)
UsethisLEDtovisuallylocatedtheserver
amongotherservers.YoucanuseIBM
SystemsDirectororIMM2tolightthis
LEDremotely.
Checklog(yellow)
Anerrorhasoccurredandcannotbe
isolatedwithoutperformingcertain
procedures.
a.ChecktheIMM2systemeventlogand
thesystem-errorlogforinformation
abouttheerror.
b.Savethelogifnecessaryandclear
thelogafterwards.
System-error(yellow)
Anerrorhasoccurred.
a.CheckthelightpathdiagnosticsLEDs
andfollowtheinstructions.
134Systemx3500M4InstallationandServiceGuide