Required Tools And Equipment - Cisco Carrier Routing System CRS-1 Installation Manual

Chapter 2 Installing and Removing Power Components
Prerequisites
Power down the Cisco CRS 4-slot line card chassis (as described in the steps below).

Required Tools and Equipment

You need the following tools and parts to perform this task:
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This procedure assumes that the Cisco CRS 4-slot line card chassis is already mounted in a rack with
Note
sufficient room to access the sides and the bottom of the chassis.
Steps
To remove the DC power shelf, 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.
Bring Down All Power to the Chassis
Power down the chassis:
Step 2
a.
b.
c.
OL-10971-10
ESD-preventive wrist strap
Medium flat-blade screwdriver
Number 1 Phillips screwdriver
Number 2 Phillips screwdriver
5-mm Allen wrench
10-mm hex socket wrench
Go to the rear of the chassis. On the PIM, set both power shelf enable switches to OFF (see
Figure 2-19). Now the system's boards and fans have no power.
Unplug the DC power supplies.
Disconnect input power from the customer source.
Cisco CRS Carrier Routing System 4-Slot Line Card Chassis Installation Guide
Removing a DC Power Shelf
2-21