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Chapter 3. Server controls, LEDs, and power
This chapter describes the controls and
Front view
The following illustration shows the controls, LEDs, and connectors on the front of the server.
LED
Hard disk drive activity LED
LED
USB connectors
CD or DVD drive activity LED
(Optional)
(Optional) Diskette drive activity LED
Power-on LED
When this LED is lit, it indicates that the server is turned on. When this LED is off, it indicates that ac power 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 the server. The LED might be burned out. To remove all electrical power from the server, you must disconnect the power cords from the electrical outlets.
Press this button to turn the server on and off manually.
Hard disk drive activity LED
When this LED is flashing, it indicates that a hard disk drive is in use.
System-error LED
When this amber LED is lit, it indicates that a system error has occurred.
An LED on the system board might also be lit to help isolate the error. See
Chapter 5, “Solving problems,” on page 49 for additional information.
Detailed troubleshooting information is in the Problem Determination and
Service Guide on the IBM xSeries Documentation CD.
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