Power Supply Troubleshooting
Table 
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  | Lights on  | 
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  | Front Panel Lights  | Back of  | 
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  | Power  | 
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  | Supply  | 
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  | ONSwitchPower  | 
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System Status | PowerLogicSwitchGood LED  | FailSupplyPowerLED (Red)  | TemperatureOverLED (Red)  | GoodSupplyPowerLight  | 
  | TemperatureOverLED (Red)  | Fan  | Corrective Action | |
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Chassis OFF  | Off  | NA*  | Off  | Off  | 
  | Off  | Off  | No  | Press the  | 
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  | appropriate Power  | 
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  | Switch to 1 (ON)  | 
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ON - OK | On  | NA*  | Off  | On  | 
  | Off  | On  | Yes  | None  | 
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AC source  | Off  | NA*  | Off  | Off  | 
  | Off  | Off  | Yes  | Check AC source,  | 
disruption  | 
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  | plug, and fuse  | 
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Power Supply  | Off  | NA*  | Off  | Off  | 
  | Off  | On  | Yes  | Replace Power  | 
voltage out of  | 
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  | Supply/Fan  | 
range  | 
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Power Supply  | Off  | NA*  | Off  | Off  | 
  | On  | On  | Yes  | Fix cause of  | 
overheat  | 
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  | overheat, else  | 
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  | replace faulty Power  | 
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  | Supply  | 
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Fan Failure  | Off  | NA*  | Off  | Off  | 
  | On  | Off  | Yes  | Replace Power  | 
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  | Supply/Fan  | 
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Chassis  | On  | NA*  | On  | On  | 
  | Off  | On  | Yes  | Fix cause of  | 
Overheat | 
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  | overheat, else | 
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  | power down | 
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  | immediately | 
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Shaded text in table denotes abnormal indications.
* The state of the Power Supply Fail LED is not applicable in a system with one Power Supply.
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 | Installer’s/User’s Manual  |