11
Chapter 1: Introduction
Control Panel/CPU Module LED Indicators
Item Feature
Description
1
Power LED
Indicates power is being supplied to the system power supply. This LED is green when the
system is operating and amber when in standby mode.
2
Information LED
See table below.
3
Power Button
Used to apply or remove power to the system. Turning off system power with this button
removes the main power but maintains standby power. To perform most maintenance tasks, you
should also unplug the AC power cords before servicing.
4
CPU Module
Connection LED
When illuminated, this green LED indicates a CPU module is properly installed and functioning.
5
Memory Error LEDs
This array of LEDs is provided to indicate a memory slot on the CPU board that has failed. If
illuminated red, the designations (A1, A2, etc.) correspond to the failed slot on the CPU board.
Information LED
Status
Description
Continuously on and red
An overheat condition has occurred (this may be caused by cable congestion).
Blinking red (1Hz or 1/sec.)
Fan failure, check for an inoperative fan.
Blinking red (.25Hz or 4/sec.)
Indicates a power supply module has failed.
Figure 1-1. Chassis Control Panel
1.4 Server Chassis Features
Control Panel/CPU Module Indicators
The switches and LEDs located on the control panel are described below.
1
2
3
4
5
Figure 1-2. CPU Module LED Indicators
