2.Lookatthelightpathdiagnosticspanelonthefrontoftheserver.LitLEDsonthelightpathdiagnostics
panelindicatethetypeoferrorthathasoccurred.ThelightpathdiagnosticspanelLEDsarevisible
throughthebezel.See“LightpathdiagnosticsLEDs”onpage133.Lookatthesystemservice
labelonthetopoftheserver,whichgivesanoverviewofinternalcomponentsthatcorrespondto
theLEDsonthelightpathdiagnosticspanel.Thisinformationcanoftenprovideenoughinformation
todiagnosetheerror.
LightpathdiagnosticsLEDs
ThefollowingtabledescribestheLEDsonthelightpathdiagnosticspanelandsuggestedactionstocorrect
thedetectedproblems.
Lookatthelightpathdiagnosticspanelonthefrontoftheserver.LitLEDsonthelightpathdiagnostics
panelindicatethetypeoferrorthathasoccurred.ThelightpathdiagnosticspanelLEDsarevisible
throughthebezel.
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby'(Trainedtechnicianonly)',thatstepmustbeperformedonlybyaTrained
technician.
•GototheIBMsupportwebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,
hints,tips,andnewdevicedriversortosubmitarequestforinformation.
Table12.LightpathdiagnosticspanelLEDs
LEDDescriptionAction
Harddiskdrive/RAID
Aharddiskdrivehasfailedor
ismissing.ASAScontrolleror
aServeRAIDcontrollererror
hasoccurred.
1.ChecktheLEDsontheharddiskdrivesforthedrive
withalitstatusLEDandreseattheharddiskdrive.
2.Reseattheharddiskdrivebackplane.
3.ChecktheLEDsnearSAScontrollersorServeRAID
controllersandreseatthecorrespondingcontrollers.
4.Iftheerrorremains,replacethefollowingcomponents
oneatatime,intheorderlisted,restartingtheserver
aftereach:
a.Replacetheharddiskdrive.
b.Replacetheharddiskdrivebackplane.
c.ReplacetheSAScontroller.
d.ReplacetheServeRAIDcontroller.
5.Iftheproblemremains,goto
http://www.lenovo.com/support.
Fan
Afanhasfailed,isoperating
tooslowly,orhasbeen
removed.TheTEMPLED
mightalsobelit.
1.Openthefancagecovertoreseatthefailingfan(with
litLED).
2.Replacethefailingfan(see“Installingahot-swap
fan”onpage226
).
Chapter4.Troubleshooting133