Cisco Systems 3825 Series manual Upgrading the Cisco 3825 Fan Unit, Removing the Router Cover

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Upgrading the Cisco 3825 Fan Unit

Upgrading the Cisco 3825 Fan Unit

The fan unit and cabling for the Cisco 3825 router are contained inside the chassis.

Note The fan unit upgrade procedure will take approximately one hour.

To upgrade the fan unit, complete these procedures:

Removing the Router Cover, page 12

Removing the Fan Unit, page 14

Installing the Fan Unit, page 16

Replacing the Router Cover, page 17

Removing the Router Cover

To access the Cisco 3825 fan unit, you must first remove the router cover. To remove the router cover, complete the steps that follow. You will need a number 2 Phillips screwdriver.

If your router uses AC or DC power, observe the following warning:

Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. Statement 4

If your router uses DC power, observe the following warning:

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003

Caution Before removing the cover, make sure that the flash memory card ejector button is flush with the front panel. If the button projects from the panel, removing the cover can damage it.

Step 1 Power down the router and disconnect the power cord from the front of the router.

Warning Before opening the unit, disconnect the telephone-network cables to avoid contact with telephone-network voltages. Statement 1041

Step 2 Disconnect all network interface cables from the back panel of the router.

Step 3 Remove the router from the rack. Remove the rack-mounting brackets from the router, using the number 2 Phillips screwdriver.

Step 4 Place the router on a flat surface. Remove the two screws from the top of the router and set them aside in a safe place.

Installing and Upgrading Fans in the Cisco 3825 Series Routers

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78-18642-01

 

 

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Contents This document contains the following sections Safety Warnings and Guidelines Safety WarningsStatement 1071-Warning Definition Conservare Queste Istruzioni 78-18642-01 GEM Disse Anvisninger 78-18642-01 Page Safety Guidelines Safety with ElectricityItems in the Fan Replacement Kit Required Tools and EquipmentPreventing Electrostatic Discharge Damage Location of the Cisco 3825 Router Fans Location of the fan unitUpgrading the Cisco 3825 Fan Unit Removing the Router CoverRemoving the Cover from a Cisco 3825 Router Lifting the Connector from the Receptacle Removing the Fan UnitFan mounting screws on the side of the chassis Installing the Fan Unit Follow these steps to install the fan unitReplacing the Router Cover Follow these steps to replace the cover