IBM x3105 - System - 4347, Service Manual

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Server controls, LEDs, and connectors
This section describes the controls, light-emitting diodes (LEDs), and connectors on
the front and rear of the server.
Front view
The following illustration shows the controls and LEDs on the front of the server.
CD or DVD eject
button
CD or DVD drive
activity LED
(Optional) Diskette-eject
button
Hard disk drive
activity LED
Power-on LED
System error LED
USB (2)
(Optional) Diskette drive
activity LED
Power-control
button
CD or DVD-eject button
Press this button to release a CD or DVD from the CD or DVD drive.
(Optional) Diskette-eject button
Press this button to release a diskette from the diskette drive.
Hard disk drive activity LED
When this LED is flashing, it indicates that the hard disk drive is in use.
USB connectors
Connect a USB device to these connectors.
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.
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, 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.
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IBM System x3105 Type 4347: Problem Determination and Service Guide