Removing The Power Supply Unit - Cisco SCE 1000 Installation And Configuration Manual

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Table of Contents

Removing and Replacing a Power Supply Unit

Powering Down a DC-Input Power Supply Unit and Removing the

DC-Input Leads

To power down a DC-input power supply to the SCE 1000 platform, complete the following

steps:

Before completing any of the following steps, and to prevent short-circuit or shock hazards, ensure that

Warning

power is removed from the DC circuit. To ensure that all power to the power supply unit is OFF, locate

the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF

position, and tape the switch handle of the circuit breaker in the OFF position.

Note that the power to the relevant power supply unit should be off, not necessarily all power to the

SCE 1000 platform. One DC-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 DC-input power supply in the OFF ( ) position.

Step 2

Make sure that that power is removed from the DC circuit by turning off the circuit breaker or

switch providing power to the DC-input power supply.

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

Step 3

Remove the screw from one DC power line input lead receptacle and pull the lead from the

Step 4

connector. Repeat this step for the remaining lead.

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

platform. Proceed to