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Doc. No.
78-3504-01
Replacing the Cisco 4000 Series Power Supply
Cisco Product Number: PWR-4X00-AC=, PWR-4X00-DC=
This document contains instructions for replacing AC and DC power supplies in Cisco 4000 series
routers.
This document is for the power supply installer, who should be familiar with electronic circuitry and
wiring practices and have experience as an electronic or electromechanical technician.
If you have a Cisco 4000-M, Cisco 4500-M, or Cisco 4700-M router, use this document with
the Cisco 4000 Series Installation Guide and the Cisco 4000 Series Public Network Certification
document that shipped with your router. If you have a Cisco 4000 router, refer to the Cisco 4000
Hardware Installation and Maintenance publication. If you have a Cisco 4500 or Cisco 4700 router,
refer to the Cisco 4000 Series Hardware Installation and Maintenance publication.
This document contains the following sections, including step-by-step procedures for replacing a
Cisco 4000 series power supply:
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All rights reserved.
Overview of the Cisco 4000 Series Power Supplies
Accessing the Power Supply
Removing AC and DC Power Supplies
Replacing AC and DC Power Supplies
Replacing Connections to the Router
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