Removing The Chassis Cover - Cisco AS5400HPX Installation Manual

Appendix B Replacing the Power Supply

Removing the Chassis Cover

You must open the chassis to gain access to its interior components.
To remove the chassis cover, follow these steps:
Step 1 Turn the power switch OFF and disconnect site power. (Note that the power switch is part of the power
supply.)
Note
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 B-1
Mounting
screw
a.
b.
c.
d.
OL-2847-02 0A
If you are using a DC-powered unit, refer to
through Step d.
DC Power Supply Connections
Mounting screw
Strain-relief
clamps
IN OK
DC OK
LEDs
OTF
On/off
switch
IN OK
DC OK
LEDs
OTF
Strain-relief
clamps
Loosen the six locking screws for the negative, return, and ground connectors on the DC power
supply terminal blocks.
Remove the -48 VDC wires from the terminal block negative connectors (-).
Remove the 48 VDC wires from the terminal block positive connectors (+).
Remove the safety ground (green wires) from the terminal block ground connectors.
Figure B-1 and complete Step a
Mounting screw
Terminal
block
Terminal
block
Cisco AS5400 Universal Gateway Chassis Installation Guide

Removing the Chassis Cover

B-3