1Doc. No.Cisco Systems, Inc.All rights reserved.170 West Tasman DriveSan Jose, CA 95134-1706USACisco Systems, Inc.Corporate HeadquartersCopyright © 1997Installing Cisco AC and DC Power Supplies inCisco 2500 Series RoutersProduct Numbers: PWR-2500-AC=, PWR-2500-DC=This document describes how to replace the AC or DC power supply in Cisco 2500 series routers.The AC and DC power supplies are spare parts items. The replacement of the power supply requiresremoving the existing power supply and installing the replacement power supply. This proceduredoes not apply to the Cisco 2517, 2518, or 2519 versions of the Cisco 2500 series routers.This document includes the following sections:• Required Tools and Equipment, page 2• Removing the Cover, page 2• Removing AC and DC Power Supplies, page 3• Installing AC and DC Power Supplies, page 5• Replacing the Cover, page 6• Obtaining Service and Support, page 11• Cisco Connection Online, page 11Warning This waning symbol means danger. You are in a situation that could cause bodily injury.Before you work on any equipment, you must be aware of the hazards involved with the electricalcircuitry and familiar with standard practices for preventing accidents. (To see translated versions ofthis warning, refer to the Regulatory Compliance and Safety Information document thataccompanied the router.)Warning Only trained and qualified personnel should be allowed to install or replace thisequipment. (To see translated versions of this warning, refer to the Regulatory Compliance andSafety Information document that accompanied the router.)78-4144-01