Dell PowerEdge 650 - Manual (Page 21)

Table 2-1. Front-Panel Indicator Codes
l The power button controls the power input to the system's power supply.
l The two system identification buttons on the front and back panels can be used to locate a particular system within a rack. When one of these buttons
is pushed or the system management software is used to identify the system, the blue system status indicators on the front and back of the system
blink. (To stop the indicator from blinking press one of the identification buttons a second time, or use the systems management software.)
The front panel also incorporates a USB connector and a video connector. See Figure 2 -1 .
Back-Panel Indicators and Features
Figure 2 -2 shows the back-panel indicators and features. Table 2 -2 details the conditions associated with each back-panel indicator code.
Figure 2-2. Back-Panel Indicators and Features
Table 2-2. Back-Panel LED Codes
Indicator Type Activity Indicator Indicator Code
Power Off The system is off and AC power is not connected to the system.
Green blinking AC power is connected to the system, but the system is not powered on.
Green Indicates that the system is powered on.
Blue/amber system status Off The system is off.
Blue The system is operating normally.
Blue blinking The system is identifying itself due to the pressing of the identification button.
NOTE: Systems management software causes the indicator to blink to identify the system.
Amber blinking Indicates a fault with the system.
Hard drive Green blinking Indicates hard drive activity.
LED Indicator Normal Operation Error Condition
Status Off The system is off.
Blue The system is operating normally.
Blue blinking The system is identifying itself due to the pressing of the identification button.
NOTE: Systems management software causes the indicator to blink to identify the system.
Amber blinking Indicates a fault with the system.