Cisco 3825 Series Installatie en upgrades - Pagina 12

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Upgrading the Cisco 3825 Fan Unit

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

The fan unit upgrade procedure will take approximately one hour.

Note

To upgrade the fan unit, complete these procedures:

•

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:

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

Warning

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.

Before opening the unit, disconnect the telephone-network cables to avoid contact with

Warning

telephone-network voltages. Statement 1041

Step 2

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

Remove the router from the rack. Remove the rack-mounting brackets from the router, using the number

Step 3

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

Removing the Router Cover, page 12

Removing the Fan Unit, page 14

Installing the Fan Unit, page 16

Replacing the Router Cover, page 18

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