Bridge/Router Installation and Configuration Guide

CHAPTER
7-1
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
7
Maintaining the Router
Your router is equipped as ordered and is ready for installation and startup when
it is shipped. As your networking requirements change, you may need to upgrade
the system by adding or changing components. This chapter describes how to
maintain router components.
Procedures for maintaining the router are described in the following sections:
• Powering Off the Router, page 7-2
• Removing and Installing the Front Covers and Bezel Extenders on Original
Cisco 12000 Series Routers, page 7-3
• Removing and Installing Front Doors on Cisco 12016 Enhanced Series
Routers, page 7-13
• Cleaning or Replacing the Chassis Air Filter, page 7-17
• Removing and Replacing Blower Modules, page 7-24
• Removing and Replacing AC and DC Power Subsystem Components,
page 7-29
• Removing and Replacing an AC Power Supply, page 7-33
• Removing and Replacing the Standard AC-Input Power Shelf, page 7-44
• Removing and Replacing the Optional 2-Level AC-Input Power Shelf,
page 7-51
• Upgrading the AC-Input Power Shelf, page 7-59
• Removing and Replacing a DC PEM, page 7-60
• Removing and Replacing the DC-Input Power Shelf, page 7-68