Datasheet

Removing the Chassis Cover

78-4519-04

Removing and Installing the Cisco AS5400 Power Supply

Warning

Before performing any of the following procedures, ensure that power is removed from 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. To see translations of the warnings that appear in this publication, refer

to the Regulatory Compliance and Safety Information document that accompanied this device.

Figure 39 DC Power Supply Connections

Loosen the six locking screws for the negative, return, and ground connectors on the DC power

supply terminal blocks.

b. Remove the -48 VDC wires from the terminal block negative connectors (-).

c. Remove the 48 VDC wires from the terminal block positive connectors (+).

d. Remove the safety ground (green wires) from the terminal block ground connectors.

Caution Do not connect the 48 VDC wire to the chassis. A single point ground is recommended at the power

distribution rack.

Step 3 Remove all interface cables from the rear panel of the chassis.

Step 4 Place the chassis so that the front panel is facing you.

On/off

switch

LEDs

31628

Terminal

block

Mounting screwMounting screw

Mounting

screw

IN OK

DC OK

OTF