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Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs

Modules Internal to the Cisco 1941 Router

This section tells how to install the field replaceable modules in the Cisco 1941 router. It contains the

following subsections:

•

All the module replacement procedures in this section require removal of the chassis cover. Before you

perform any of the module replacement procedures, disconnect the power and remove the cover as

described in the

replacement procedures, install the chassis cover as described in the

section on page

Opening and Closing the Chassis

To open or close the chassis, follow these steps. A number one Phillips screw driver is required.

Opening the Chassis

Make sure that the router is turned off and is disconnected from AC power.

Turn the router upside down, and rest the top of the router on a flat surface.

Use the Phillips screwdriver to remove the screws that holds the top of the of the case to the chassis, as

shown in

Opening and Closing the Chassis, page 5

Installing and Removing a Power Supply, page 15

Installing a Blower, page 20

Opening and Closing the Chassis, page 5

Installing and Replacing CompactFlash Memory Cards

"Opening and Closing the Chassis" section on page

Figure

Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs

Modules Internal to the Cisco 1941 Router

5. After you complete the module

"Opening and Closing the Chassis"