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1
Overview
Table 3
Table 3 System Status LEDs
Status indicator
Blinking yellow
Solid red
The location and meaning of the status LEDs for the installed NICs is
described in
Fan Unit
The Nokia IP2255 appliance fan unit is a single unit made up of four
individual fans to provide the air flow required to maintain a proper operating
temperature. The fan unit provides N + 1 cooling, so it can provide proper
airflow even if an individual fan fails.
Caution
If an individual fan fails, replace the fan unit as soon as possible. For
information about how to replace a failed fan unit, see
Fan Unit"
The system status LEDs on the front panel of the appliance show the status of
the fan unit. For more information about the system status LEDs, see
Status LEDs"
30
shows the system status LEDs and describes their meaning.
Meaning
Appliance is experiencing a
temperature problem.
One or more fans are not
operating properly or one of the
connected power supplies is
experiencing a problem.
Chapter 4, "Connecting to the Network Interface Cards."
on page 96.
on page 29.
Nokia IP2255 Security Platform Installation Guide
Symbol
!
"Replacing the
"System
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