Cisco Systems OL-7821-04 Manual do Utilizador descarregar pdf (Página 55)

Chapter 4 Installation and Maintenance

Removing and Replacing a Power Supply Unit

Cisco SCE 1000 2xGBE Installation and Configuration Guide

OL-7821-04 4-15

Warning

Never install an AC power module and a DC power module in the same chassis.

Powering Down the Power Supply Unit and Disconnecting Input Power

The following sections describe how to remove power from an AC-input power supply and a DC-

input power supply:

• Powering Down an AC-Input Power Supply (on page 4-15)

• Powering Down a DC-Input Power Supply Unit and Removing the DC-Input Leads (on page

4-16)

Powering Down an AC-Input Power Supply

To power down an AC-input power supply to the SCE 1000 platform, complete the following

steps:

Warning

Make sure that the power supply unit is switched off before replacing a power supply unit (NO hot-

swap).

Note that one AC-input power supply can be running when the other power supply is being removed or

replaced.

Step 1 Place the on/off switch on the AC-input power supply in the OFF ({) position.

Step 2 Observe that the corresponding Power LED on the front panel turns off.

Step 3 Remove the cable from the AC-input power receptacle

This completes the procedure for powering down an AC-input power supply unit on a SCE 1000

platform. Proceed to Removing the Power Supply Unit (on page 4-16).

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Cisco Systems OL-7821-04 Manual do Utilizador Página 55