Lenovo ThinkServer RD640 - Page 69

Note:Dependingonthemodel,yourservermightlookslightlydifferentfromtheillustrationsinthistopic.
TheserverisdesignedsothatLEDsremainlitwhentheserverisconnectedtoanacpowersourcebutis
notturnedon,providedthatthepowersupplyisoperatingcorrectly.Thishelpsyoutoisolateproblems
whentheserverisnotturnedon.ManyerrorsarefirstindicatedbyaliterrorLEDonthediagnosticpanel
oftheserver.IfanLEDislit,oneormoreLEDselsewhereintheservermightalsobelittodirectyouto
thesourceoftheerror.
ThefollowingillustrationshowstheTMMstatusLEDandsystemfanerrorLEDsonthesystemboard.
Figure35.SystemboardLEDs
1TMMstatusLED(alsoknownasBMCstatusLED)
ThisLEDindicatesthestatusoftheonboardThinkServerManagementModule(TMM,alsoknownasBMC).
TMMstatusLED
Color
Description
OnGreen
TheTMMisnotready.
Off
None
TheTMMhasnopowerorhasfailed.
Blinking
Green
TheTMMisworking.
2-7SystemfanerrorLEDs
WhenasystemfanerrorLEDonthesystemboardislit,itindicatesthatthecorrespondingsystemfanis
operatingslowlyorhasfailed.Tosolvetheproblem,youmightneedtoreinstallorreplacethesystemfan.
See“Replacingasystemfan”onpage172
.Ifitisasystemboardproblem,contacttheLenovoCustomer
SupportCenter.
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