Cisco 4431 ISR

6-61
Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers
OL-32185-02
Chapter 6 Install and Upgrade Internal Modules and FRUs
Replace a Fan Tray
Figure 6-45 Cisco 4331 ISR Fan Tray
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5
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4
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3
1 Chassis cover 3 Fan tray
2 Cover screws (4) 4 Spring-lock
5 Cover screws on the side of the chassis (2)