CHAPTER 4
Install and Upgrade Internal Modules and FRUs
The Cisco 1100 Series Integrated Services Routers have internal modules and field-replaceable units (FRUs)
that can be quickly and easily removed and replaced without having to send the entire router for repair.
This section describes how to install and upgrade the internal modules and FRUs in the Cisco 1100 Series
ISRs. The information is contained in the following sections:
• Access Internal Modules, on page 41
• Locate Internal and External Slots for Modules, on page 43
• Remove and Replace the Cisco 1100 Series ISRs Power Supplies , on page 50
• Install and Remove SFP Modules, on page 51
Access Internal Modules
To access the internal modules on the router, you must first disconnect the power source and then remove the
chassis cover. See the Replacing the Chassis Cover section for instructions on how to remove and later
replace the chassis cover on the routers.
Only trained and qualified personnel should be allowed to install, replace or service this equipment. Statement
1030.
Warning
Before opening the unit, disconnect the telephone-network cables to avoid contact with telephone-network
voltages. Statement 1041.
Warning
Power off the unit before you begin. Statement 237.
Warning
Replace the Chassis Cover
The Cisco 1100 Series ISRs have a removable cover. Do not attempt to run the router without the cover. This
can cause the router to overheat very quickly. To remove the chassis cover, use a number-2 Phillips screwdriver
and perform the following tasks:
Hardware Installation Guide for the Cisco 1000 Series Integrated Services Router
41
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