Dell PowerEdge 1800 - Manual (Page 13)

Indicators, Codes, and Messages
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Off Blinking The system is powered on and
has detected an error. See
"System Messages" and
"Troubleshooting Your System"
for more information.
On Off Power is on, and the system is
operational.
Blinking Off The indicator has been activated
to identify the system in a rack.
NOTE:
While the system is being identified, the blue indicator blinks even though an error has been
detected. After the system is identified, the blue indicator stops blinking and the amber indicator resumes
blinking.
Table 2-2. Front-Panel LED Indicators, Buttons, and Connectors
Indicator, Button,
or Connector Icon Description
Blue system status
indicator The blue system status indicator lights up during
normal system operation. Both the systems
management software and the identification buttons
located on the front and back of the system can cause
the blue system status indicator to flash to identify a
particular system.
Amber system status
indicator The amber system status indicator flashes when the
system needs attention due to a problem with power
supplies, fans, system temperature, or SCSI hard drives.
NOTE:
If the system is connected to AC power and an
error has been detected, the amber system status
indicator flashes regardless of whether the system has
been powered on.
Table 2-1. System Status Indicator Patterns (continued)
Blue indicator Amber Indicator Description