Cisco Systems Cisco CRS-1 manual Powering the Chassis Up or Down

Chapter 2 Installing and Removing Power Components

About Installing and Removing the Power Components

Note The DC return of this system should remain isolated from the system frame and chassis (DC-I: Isolated DC Return).

Powering the Chassis Up or Down

The chassis does not have a single enable switch that powers the entire chassis and all its components up and down. (These switches are called enable switches because they enable the power supplies to produce output voltage and power).Most components on the chassis, such as the power supplies, MSCs, PLIMs, and fan trays can be removed or installed in the chassis while it is running.

Before you can power the chassis up, you must complete the following tasks:

Step 1 Install the appropriate power shelf for your system (see the “Installing a DC Power Shelf” section on page 2-11or the “Installing an AC Power Shelf” section on page 2-22).

Step 2 Install the power supplies (see the “Installing a Power Supply” section on page 2-25).

Step 3 Install the route processor (RP) card (see the “Installing an RP Card” section on page 4-26).

Step 4 Install the input power cables to the input power connectors on the rear of the chassis, and the other end (plug side) to the AC or DC power source.

Step 5 Activate your power source.

Step 6 Turn the two power shelf enable switches on the rear (SFC) side of the power shelf (see Figure 2-2) to the ON position.

Note The two enable switches on the rear (SFC) side of the AC power shelf (Figure 2-2) put the chassis in standby mode; in other words, they only power down the -54VDC output from the power supplies.

Cisco CRS-1 Carrier Routing System 4-Slot Line Card Chassis Installation Guide

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