Cisco Gigabit Switch Router Cisco 12012 Manuel d'instructions de remplacement - Page 9

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Removing and Replacing a DC-Input Power Supply

The Cisco 12012 supports up to two DC-input power supplies. In systems with dual power supplies,

if one power supply fails, the remaining power supply maintains uninterrupted operation of the

router while you replace the defective supply.

Caution

the DC circuit. To ensure that all power 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.

Removing a Power Supply

Perform the following steps to remove a DC-input power supply:

Step 1

Step 2

Warning

source circuit breaker and remove the power supply before accessing the terminals.

Step 3

Step 4

Before performing any of the following procedures, ensure that power is removed from

Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets

located on the front edges of the upper card cage or to bare metal on the frame.

If you have not already done so, turn OFF (O) the power switch on the DC-input power

supply.

Turning the power supply switch to OFF (O) releases a latch that secures the power

Note

supply in the power supply bay.

Voltages might be present on the DC-input power supply terminals. Turn off the power

Locate and turn off the source DC circuit breaker that services the power supply you want

to remove. As an added precaution, tape the circuit breaker handle in the off position.

Using a flat-blade screwdriver or a 10-mm nutdriver, turn the captive jackscrew

counterclockwise (eject) to unseat the power supply from the backplane power connector.

Continue turning the jackscrew to disengage the jackscrew from the power supply bay.

Cisco 12012 Gigabit Switch Router DC-Input Power Supply Replacement Instructions

Removing and Replacing a DC-Input Power Supply