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Installation guide

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Cisco ONS 15530 Hardware Installation Guide
OL-7706-01
Chapter 1 Cisco ONS 15530 Overview
Cisco ONS 15530 Chassis
Fan Assembly
The Cisco ONS 15530 fan assembly is located at the bottom of the chassis. The assembly contains six
individual fans and a fan controller board (see Figure 1-7).
Figure 1-7 Fan Assembly
The controller board monitors the status of each fan and reports the status to the CPU switch modules.
If a single fan fails, a minor alarm is reported to the CPU and the fan assembly LED changes from green
to yellow (see Figure 1-8). If two or more fans fail, a major alarm is reported to the CPU and the fan
LED changes to red.
Figure 1-8 Fan Assembly LED
77834
FAN
STATUS
1 Fan assembly LED 2 Alarm connector
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