Cisco Systems 2821 Series, 2851 Series

Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers

78-18643-02

Upgrading the Cisco 2821 and Cisco 2851 Fan Unit

Step2 Remove the three screws that hold the fan unit to the side of the chassis. (See number 1 in Figure6.)

Figure6 Removing Fan Mounting Screws from the Chassis

Step3 Remove the one screw that holds the fan unit to the front of the chassis. (See number 2 in Figure6.)

Step4 Lift the fan unit out of the chassis.

1Fan mounting screws on the side of the

chassis

2Fan mounting screw on the front of the chassis

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Contents

Main Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers Safety Warnings and Guidelines Safety Warnings Statement 1071Warning Definition Page Page Page Page Page Safety Guidelines Safety with Electricity Preventing Electrostatic Discharge Damage Items in the Fan Replacement Kit Required Tools and Equipment Location of the Cisco 2821 and Cisco 2851 Router Fans Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Removing the Router Cover Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers 78-18643-02 Upgrading the Cisco 2821 and Cisco 2851 Fan Unit Figure 2.) Figure2 Location of the Arrow on the Bezel 1Location of the arrow . Page Page Removing the Fan Unit Page Installing the Fan Unit 1 2 4 63 5 Replacing the Router Cover Obtaining Documentation, Obtaining Support, and Security Guidelines