Chapter 3. Server Controls, Indicators, And Power; Server Controls And Indicators; Front View - IBM eServer xSeries 255 Installation Manual

Chapter 3. Server controls, indicators, and power

This chapter identifies the controls and indicators on the front and rear of your server.
It also describes the power features of your server.

Server controls and indicators

This section identifies the controls and indicators on the front and rear of your server.

Front view

Tower and rack models
Power-control button
Notes:
1. The illustrations in this document might differ slightly from your hardware.
2. An amber LED illuminates when a system error or event has occurred. To identify
Power-on (system power) LED: When this green LED is on, system power is present
in the server. When this LED flashes, the server is in Standby mode (the system
power supply is turned off and ac current is present). When this LED is off, a power
supply, ac power, or an LED has failed.
Power-control button: Press this button to manually turn the server on or off or to
place the server in Standby mode (see "Standby mode" on page 30).
Power-control button shield:You can install this circular disk over the power-control
button to prevent accidental manual power-off. This disk is provided with your server.
Reset button: Press this button to reset the server and run the power-on self-test
(POST).
© Copyright IBM Corp. 2002
Reset button
Power-on LED
the error or event, check the LEDs on the Light Path Diagnostics panel located on
the server, or review the Error Log in the Configuration/Setup Utility program. For
complete details about the Light Path Diagnostics panel, see the Hardware Main-
tenance Manual and Troubleshooting Guide on the xSeries Documentation CD.
For more information about the Configuration/Setup Utility program, see the
User's Guide on the xSeries Documentation CD.
Activity LED
System information LED
System error LED
Hard disk drive
activity LED
Hard disk drive
status LED
Diskette drive
activity LED
Diskette-eject
button
CD-ROM drive
activity LED
CD-eject button
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