User Guide

Chapter 7 Maintaining the Router
Removing and Installing the Front Covers and Bezel Extenders on Original Cisco 12000 Series Routers
7-10
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
Figure 7-4 Opening the Chassis Air Filter Door
Caution Be especially careful not to damage the honeycomb screen on the back of the air
filter door and on the inside of the switch fabric card cage. Damaging the
honeycomb screen can restrict the air flow and cause overheating in the router. It
can also diminish EMI protection.
ALARM
CS
C
0
FAIL
1
0
1
2
E
NAB
LED
SFC
Q OC-3/STM-POS
6DS3–SMB P
/
H
/
F
12DS3–SMB P
/
H
/
F
RX
TX
11
RX
OC-48/STM-16-SCPOS
OC-12/STM-4 ATM
FAST ETERNET
ROUTE PROCESSOR
26195
Switch fabric
card cage
(behind filter door)
Air filter door
Captive screws
(2 on each side)
Air filter