Replace Hvac And Hvdc Power Module - Cisco 8800 Series Hardware Installation Manual

Replace HVAC and HVDC Power Module

Caution
Caution
Step 4 Replace the clear plastic safety covers over the DC power connection terminal studs and tighten the screws.
Step 5
Set the DC power source circuit breaker to ON (1).
Step 6 Set the power tray switch to ON (1).
Caution
Replace HVAC and HVDC Power Module
Follow these steps to remove HVAC and HVDC power modules from the chassis.
Procedure
Step 1
Do not Power OFF (0) the standby mode switch.
Hardware Installation Guide for Cisco 8800 Series Routers
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To prevent injury and damage to the equipment, always attach the ground and source DC power
cable lugs to the power tray terminals in the following order: (1) positive (+) to positive (+),
(2) negative (–) to negative (–).
Do not overtighten the nuts that secure the DC power cables to the power tray terminals. The
nuts should be tightened using the 7/16 hex socket and torque wrench to a torque of 45–50 in-lb.
Use this procedure only when reconnecting power to all power modules in a system that is powered
down completely.
Replace Chassis Components