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Installing and Upgrading Internal Modules in Cisco 2800 Series RoutersThis document describes how to install or upgrade modules that are located internally within your 
Cisco 2800 series integrated services router, such as memory modules, advanced integration modules 
(AIMs), packet voice data modules (PVDMs), and power supplies. You need to remove the cover from 
the router to install or remove any of these items. The document contains the following sections:
•Safety Warnings, page1
•Removing the Chassis Cover, page2
•Locating Modules, page 9
•Installing and Removing DRAM DIMMs, page12
•Installing and Removing AIMs, page16
•Installing and Removing PVDMs, page28
•Replacing the Power Supply, page31
•Installing the Chassis Cover, page51
Before you perform any of these module replacement procedures, disconnect the power and remove the 
cover, as described in the “Removing the Chassis Cover” section on page2. After you complete the 
module replacement procedures, install the chassis cover as described in the “Installing the Chassis 
Cover” section on page51.
Safety Warnings
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the 
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection 
authority or an electrician if you are uncertain that suitable grounding is available. 
Statement 1024
Warning
Only trained and qualified personnel should be allowed to install, replace, or service thisequipment. 
Statement 1030