Cisco 4451-X Hardware Installation Manual page 151

Chapter 6 Installing and Upgrading Internal Modules and FRUs
If hot-swapping the fan tray, it is recommended to complete the operation within two minutes to ensure
Note
the router remains within operating temperature.
Read the
Step 1
perform any module replacement.
Step 2 Pry open the fan tray screw covers on the four captive fan tray screws.
Completely loosen the four captive fan tray screws.
Step 3
Pull the fan tray out.
Step 4
Insert the replacement fan tray and tighten the four captive screws.
Step 5
Snap the screw covers in place.
Step 6
Figure 6-26 Cisco ISR 4451-X Fan Tray Replacement
1.
OL-27644-01
"Safety Warnings" section on page 6-2
Fan Tray
Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
section and disconnect the power supply before you
1
Replacing a Fan Tray
6-35