Controls and indicatorsThe most commonly used controls and status indicators are on the front panel ofthe server.System power light (green)Power control buttonReset button Operator information panelHard disk drive activity light (green) Hard disk drive status light (amber)Serial numberPower-control-button shield (if installed)System Power Light: When this green light is on, system power is present in theserver. When this light flashes, the server is in standby mode (the system powersupply is turned off and AC current is present). When this light is off, either apower supply, AC power, or a light has failed.Attention: If this light is off, it does not mean there is no electrical current presentin the server. The light might be burned out. To remove all electricalcurrent from the server, you must unplug the server power cords fromthe electrical outlets or from the UPS.Power-control button shield: You can install this circular disk over thepower-control button to prevent accidental manual power-off. This disk isprovided with your server.Power-control Button: Press this button to manually turn the server on or off.Powering on the serverYou can start the server in several ways:v You can turn on the server by pressing the power-control button on the front ofthe server.v If the server is turned on, a power failure occurs, and unattended- start mode isenabled in the Configuration/Setup utility program, the server will startautomatically when power is restored.v If AC power is present, the server is off, and the wake-up feature is enabled inthe Configuration/Setup utility program, the wake-up feature will turn on theserver at the set time.v The Integrated System Management Processor can also turn on the server.Powering off the serverStatement 5:Controls and indicatorsGeneral information 7
