Server Controls, Leds, And Power; Front View - Lenovo ThinkServer TS100 Hardware Maintenance Manual

Server controls, LEDs, and power

This section 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, LEDs, and connectors on the front of
the server.
Power-on LED
Power-control button
Hard disk drive activity LED
1
Power-on LED
2
Power-control button
3
Hard disk drive activity LED
4
System-error LED
5
USB connectors
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. A
power LED is also on the rear of the server.
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.
When this LED is flashing, it indicates that the associated hard disk drive is
in use.
6
CD-eject or DVD-eject button
7
CD or DVD drive activity LED
8
Optional diskette-eject button
9
Optional diskette drive activity LED
Chapter 1. Introduction
5