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Chapter 1: Introduction
1.4 Server Chassis Features
Control Panel
There are two buttons located on the front of the chassis: a power on/off button and a UID
button. In addition there are five LEDs. The locations of these buttons and LEDs on the control
panel are described below. See Chapter 4 for details on the control panel connections.
Universal Information LED
Status
Description
Continuously on and red
An overheat condition has occurred. (This may be caused by cable congestion.)
Blinking red (1 Hz)
Fan failure: check for an inoperative fan.
Blinking red (0.25 Hz)
Power failure: check for an inoperative power supply.
Solid blue
UID has been activated locally to locate the server in a rack environment.
Blinking blue (300 msec)
UID has been activated using IPMI to locate the server in a rack environment.
Figure 1-1. Control Panel
Control Panel Features
Item
Features
Description
1
Power button
The main power switch applies or removes primary power from the power supply to
the server but maintains standby power. To perform most maintenance tasks, unplug
the system to remove all power.
2
UID Button
Depressing the Unit Identifier button illuminates an LED on both the front and rear
of the chassis for easy system location in a rack configuration. The LED will remain
on until the button is pushed a second time. Another UID button on the rear of the
chassis serves the same function.
3
Power LED
Indicates power is being supplied to the system power supply units. This LED is
illuminated when the system is operating normally.
4
HDD LED
Indicates activity on the storage drive when flashing.
5
NIC LED
Indicates network activity on the LAN when flashing.
6
NIC LED
Indicates network activity on the LAN when flashing.
7
Information
LED
Alerts operator to several states, as noted in the table below.
5 6
4
1
3
2
10
0
11
8 9
7
1
6 5 4 3
7
2