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Installing Power Supplies in Cisco 3631 Routers
Product Numbers: PWR-3631-AC=, PWR-3631-DC=
This document describes how to replace the AC or DC power supply in a Cisco 3631 router.
This document is intended for the power supply installer, who should be familiar with electronic
circuitry and wiring practices and have experience as an electronic or electromechanical technician. Use
this document in conjunction with the Cisco 3600 Series Hardware Installation Guide and the
Regulatory Compliance and Safety Information document for your router.
If you have questions or need help, refer to the “Obtaining Technical Assistance” section on page 21.
This document contains the following sections:
• Safety Recommendations, page 2
• Overview of Cisco 3631 Power Supplies, page 6
• Required Tools and Equipment, page 6
• Accessing the Power Supply, page 7
• Replacing the Cisco 3631 Power Supply, page 7
• Electrical Connections for Cisco 3631 Routers, page 15
• Troubleshooting, page 20
• Obtaining Documentation, page 20
• Obtaining Technical Assistance, page 21
Warning
Only trained and qualified personnel should be allowed to install or replace this equipment. To see
translations of the warnings that appear in this publication, refer to the Regulatory Compliance
and Safety Information document that accompanied this device.
Warning
Before working on a chassis or working near power supplies, unplug the power cord on AC units;
disconnect the power at the circuit breaker on DC units. To see translations of the warnings that
appear in this publication, refer to the Regulatory Compliance and Safety Information document
that accompanied this device.