IBM Type 7977 manual Server controls, connectors, LEDs, and power, Front view

Chapter 3. Server controls, connectors, LEDs, and power

This chapter describes the controls and light-emitting diodes (LEDs) and how to turn the server on and off.

Front view

The following illustration shows the controls and LEDs on the front of the server.

Note: The front bezel door is not shown so that the drive bays are visible.

System power LED

Power-control button

Hard disk drive activity LED

System locator LED

System-information LED

DVD drive activity LED (green)

System-error LED

USB 2

USB 1

DVD-eject button

Hard disk drive status LED (amber)

Hard disk drive activity LED (green)

System power LED: When this LED is lit and not flashing, it indicates that the server is turned on. When this LED is flashing, it indicates that the server is turned off and is still connected to an ac power source. When this LED is off, it indicates that ac power is not present, or the power supply or the LED itself has failed. A power LED is also on the rear of the server.

Power-control button: Press this button to turn the server on and off manually. A power-control-button shield comes with the server. You can install this disk-shaped shield to prevent the server from being turned off accidentally.

Hard disk drive activity LED: When this LED is flashing, it indicates that a hard disk drive is in use.

System locator LED: Use this LED to visually locate the server among other servers. You can use IBM Director to light this LED remotely.

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