IBM 7163, Руководство по диагностике и обслуживанию

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Server controls, connectors, LEDs, and power
This section describes the controls, connectors, and light-emitting diodes (LEDs)
and how to turn the server on and off.
Front view
The following illustration shows the controls, LEDs, and connectors on the front of
the server.
Operator information
panel
DVD drive activity LED
Hard disk drive
activity LED
Hard disk drive
status LED
DVD-eject button
USB connectors
Operator information panel: The following illustration shows the controls and
LEDs on the operator information panel.
Power-control button
Power-on LED
USB connectors
Hard disk drive activity LED
Information LED
System-error LED
Locator LED
Release latch
The following controls and LEDs are on the operator information panel:
Power-control button: Press this button to turn the server on and off manually.
A power-control-button shield comes with the server.
Power-on 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 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.
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.
Hard disk drive activity LED: When this LED is flashing, it indicates that a
SAS hard disk drive is in use.
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IBM System x3755 Type 8877 and 7163: Problem Determination and Service Guide