Removing A Power Supply; Ac Power Supply Cord Illustrations And Plug Types - Cisco Carrier Routing System CRS-1 Installation Manual

Removing a Power Supply

Caution
What to Do Next
After performing this task, you may connect the power shelf to the power source (see the
Installing and Removing the Power Components" section on page
covers, and power up the chassis (see the
on page

Removing a Power Supply

This section describes how to remove a power supply in the Cisco CRS 4-slot line card chassis. The
power supplies can be an AC or DC power supplies (however, mixed types are not permitted). The AC
power supply converts facility AC power into the DC power necessary to power the cards and modules
in the chassis. Each AC power supply has its own pair of cooling fans, which draws air through the power
supply.
For complete information on regulatory compliance and safety, see Cisco CRS Carrier Routing System
Regulatory Compliance and Safety Information.
See
Prerequisites
Before operating the power shelf ejectors and removing the power shelf, take the following precautions:
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Required Tools and Equipment
You need the following tools to perform this task:
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Steps
To remove a power supply, follow these steps:
Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection
Step 1
sockets on the front (PLIM) side of the chassis or a bare metal surface on the chassis.
Cisco CRS Carrier Routing System 4-Slot Line Card Chassis Installation Guide
2-30
To prevent damage to the AC or DC power shelf-to-power supply connections, do not use
excessive force when seating a power supply to its power shelf.
2-4).
Figure 2-24 for an illustration of a power supply.
For an AC power shelf, ensure that the rear panel fasteners are disengaged.
For a DC power shelf, unlock the power input shelf by pulling the lever handles down.
Disconnect the input power cables.
Remove the air intake (inlet) grille.
ESD-preventive wrist strap
Chapter 2 Installing and Removing Power Components
2-1, replace any front cosmetic
"AC Power Supply Cord Illustrations and Plug Types" section
"About
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