Filter
Top Products
7 August 2003
1-7
Cisco ONS 15530 Hardware Installation Guide
78-14228-02
Chapter 1 Cisco ONS 15530 Overview
Cisco ONS 15530 Chassis
Figure 1-6 Cisco ONS 15530 CHAS-N Chassis Airflow
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 1-8).
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 1-7). If two
or more fans fail, a major alarm is reported to the CPU and the fan LED changes
to red.
Table 1-1 lists the fan assembly LED status describing the alarm reports for the
fan assembly. The fan assembly is hot-swappable.
Exhaust
air
A
mbient air
intake
Front
Rear
Top
77668
Bottom
Fan assembly