BeforeyouworkinsidetheservertoviewlightpathdiagnosticsLEDs,readthesafetyinformation“Safety”
onpagev
and“Handlingstatic-sensitivedevices”onpage31.
Ifanerroroccurs,viewthelightpathdiagnosticsLEDsinthefollowingorder:
1.Lookattheoperatorinformationpanelonthefrontoftheserver.
•IfthechecklogLEDislit,itindicatesthatanerrorormultipleerrorshaveoccurred.Thesourcesof
theerrorscannotbeisolatedorconcludedbyobservingthelightpathdiagnosticsLEDsdirectly.A
furtherinvestigationintoIMM2.1system-eventlogorsystem-errorlogmightberequired.
•Ifthesystem-errorLEDislit,itindicatesthatanerrorhasoccurred;gotostep2.
Thefollowingillustrationshowstheoperatorinformationpanel.
Power-on LED System error LED
System locator LED
Ethernet activity LED
Check log LED
Figure94.Operatorinformationpanel
ThefollowingtabledescribestheLEDsontheoperatorinformationpanelandsuggestedactionsto
correctthedetectedproblems.
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntilthe
problemissolved.
•Ifanactionstepisprecededby'(Trainedtechnicianonly)',thatstepmustbeperformedonlyby
aTrainedtechnician.
•GototheIBMsupportwebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,
hints,tips,andnewdevicedriversortosubmitarequestforinformation.
Table11.ThesuggestedactionstocorrectthedetectedproblemforeachLEDlight
LEDDescriptionAction
Systemlocator(blue)
UsethisLEDtovisuallylocatedthe
serveramongotherservers.Youcanuse
SystemsDirectororIMM2.1tolightthis
LEDremotely.
Checklog(yellow)
Anerrorhasoccurredandcannotbe
isolatedwithoutperformingcertain
procedures.
a.ChecktheIMM2.1systemevent
logandthesystem-errorlogfor
informationabouttheerror.
b.Savethelogifnecessaryandclear
thelogafterwards.
System-error(yellow)
Anerrorhasoccurred.
a.CheckthelightpathdiagnosticsLEDs
andfollowtheinstructions.
b.ChecktheIMM2.1systemevent
logandthesystem-errorlogfor
informationabouttheerror.
c.Savethelogifnecessaryandclear
thelogafterwards.
132Systemx3500M5InstallationandServiceGuide