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