Computer Hardware User Manual

2-9SystemfanerrorLEDs
WhenasystemfanerrorLEDonthesystemboardislit,itindicatesthatthecorrespondingsystemfanis
operatingtooslowlyorhasfailed.Tosolvetheproblem,youmightneedtoreinstallorreplacethesystem
fan.See“Replacingasystemfan”onpage138.Ifitisasystemboardproblem,contacttheLenovo
CustomerSupportCenter.
48ThinkServerRD540UserGuideandHardwareMaintenanceManual