Cisco Systems OL-16447-01 Manual De Usuario

Confirm that both the DCA LED and the PSU 1 LEDs are green. (If you can access the switch rear panel, 
verify that the power-supply module PSU OK LED is green.) See 

 for a description 

of the power-supply module LEDs. See 

 and 

 for the status 

and DC-power-supply LED descriptions.

 shows the front of the switch when DC-power-supply modules are installed. The DC A and 

DC B LEDs are green when the respective feeds are active.

This illustration shows two sets of feeds installed. You can install one set of feeds, A or B.

See the 

 for information on how to configure the power 

supply settings.

Turn off power at the DC circuits. To ensure that power is removed from the DC circuits, locate the 
circuit breakers for the DC circuits, switch the circuit breakers to the OFF position, and tape the 
circuit-breaker switches in the OFF position.

Use a number-2 Phillips screwdriver to remove the plastic safety cover from the power-supply terminal 
blocks.

Use a number-1 Phillips screwdriver to remove the DC-input power wires from the power terminals.

Use a Phillips screwdriver to loosen the two captive screws at the lower edge that secure the 
power-supply module to the switch chassis.

Remove the power-supply module from the power slot by pulling on the extraction handle.

To prevent overheating and to maintain proper air flow, either a power-supply module or a blank cover 
must be installed in each power-supply module slot at all times.You can order the blank cover (part 
number ME34X-PWR-BLANK=) from Cisco.

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