Cisco Systems XR 12416 Installationshandbuch PDF herunterladen (Seite 31)

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Cisco XR 12416 Router Installation Guide

OL-13833-01

Chapter 1 Product Overview

Blower Module

Each blower module contains three variable speed fans and a controller card. The

two front cover LEDs provide a visual indication of blower module status

(Figure 1-15):

Figure 1-15 Blower Module

•

OK (green)—All three fans are operating normally.

• FAIL (red)—The system has detected a fan failure or other fault in the blower

module. The fault can be caused by any of the following:

–

One or more fans are not operating

–

One or more fans are running below speed

–

A controller card fault

The blower modules maintain acceptable operating temperatures for the internal

components by drawing cool air through a replaceable air filter into the switch

fabric card cage and then through the upper and lower card cages. Figure 1-16

illustrates the air flow path through the chassis.

129308

LEDs

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Cisco Systems XR 12416 Installationshandbuch Seite 31