Cisco 1800 Series - Manual (Page 2)

11-2
Cisco 1800 Series Routers (Modular) Hardware Installation Guide
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Chapter 11 Installing and Upgrading Internal Modules in Cisco 1800 Series Routers (Modular)
Modules Internal to the Cisco 1841 Router
Warning Hazardous network voltages are present in WAN ports regardless of whether power to the router is
OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching
cables, detach the end away from the router first. Statement 1026
Modules Internal to the Cisco 1841 Router
This section tells how to install a small outline dual in-line memory module (SODIMM) and an advanced
integration module (AIM) in the Cisco 1841 router. It contains the following subsections:
• Opening the Chassis, page 11-2
• Locating Modules, page 11-4
• Installing a SODIMM, page 11-5
• Installing an AIM, page 11-6
• Closing the Chassis, page 11-11
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
“Opening the Chassis” section on page 11-2 . After you complete the module
replacement procedures, install the chassis cover as described in the “Closing the Chassis” section on
page 11-11 .
Opening the Chassis
To open the chassis, follow these steps. A number 1 Phillips screw driver is required.
Step 1 Make sure that the router is turned off and is disconnected from AC power.
Step 2 Turn the router upside down, and rest the top of the router on a flat surface.
Step 3 Use the Phillips screwdriver to remove the screw that holds the top and bottom of the chassis together,
as shown in
Figure 11-1 .