Install and Upgrade Internal Modules and Field
Replaceable Units
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 the internal modules and FRUs in the Cisco 1100 Series ISRs. The
information is contained in the following sections:
• Replace the Chassis Covers for C111X and C1111x, on page 1
• External Modules, on page 4
• Install and Remove Small Form Pluggable Modules, on page 5
• Install an LTE Pluggable Module, on page 6
Replace the Chassis Covers for C111X and C1111x
To access the internal modules on the router, you must first remove the chassis cover. See the instructions
below 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
Cisco 1100 Series ISRs have removable covers. Do not run the routers with the cover off. Doing so can cause
the router to overheat very quickly.
Use a number-2 Phillips screwdriver to perform the following tasks.
Install and Upgrade Internal Modules and Field Replaceable Units
1
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