IBM System x3250 Installation Manual

Also see for System x3250: Installation and user guide User guide Specifications Problem determination and service guide

Contents

Chapter 3. Server controls, LEDs, and powerThis chapter describes the controls and light-emitting diodes (LEDs) and how toturn the server on and off.Front viewThe following illustration shows the controls, light-emitting diodes (LEDs), andconnectors on the front of the server.Power-on LEDPower-control buttonReset buttonHard disk drive activity LEDLocator LEDSystem-error LEDUSB 1 connectorUSB 2 connectorCD-eject buttonCD drive activity LEDPower-on LED: When this LED is lit and not flashing, it indicates that the server isturned on. When this LED is flashing, it indicates that the server is turned off andstill connected to an ac power source. When this LED is off, it indicates that acpower is not present, or the power supply or the LED itself has failed.Note: If this LED is off, it does not mean that there is no electrical power in theserver. The LED might be burned out. To remove all electrical power from theserver, you must disconnect the power cord from the electrical outlet.Power-control button: Press this button to turn the server on and off manually. Apower-control-button shield comes installed around the button to prevent the serverfrom being turned off accidentally. You can remove this disk-shaped shield if youprefer.Reset button: Press this button to reset the server and run the power-on self-test(POST). You might have to use a pen or the end of a straightened paper clip topress the button.Hard disk drive activity LED: When this LED is flashing, it indicates that a harddisk drive is in use.Locator LED: This LED can be lit remotely by the system administrator to aid invisually locating the server. You can use IBM Director to light this LED remotely.System-error LED: When this LED is lit, it indicates that a system error hasoccurred. An LED on the system board might also be lit to help isolate the error.See Chapter 5, “Solving problems,” on page 29 for additional information.USB connectors: Connect a USB device to either of these connectors.CD-eject button: Press this button to release a CD from the CD drive.CD drive activity LED: When this LED is lit, it indicates that the CD drive is in use.© Copyright IBM Corp. 2007 21