A-13
Cisco ASA 5500 Series Hardware Installation Guide
78-16409-03
AppendixA Maintenance and Upgrade Procedures
Working in an ESD Environment
Working in an ESD Environment
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD damage occurs
when electronic components are improperly handled and can result in complete or intermittent failures.
Always follow ESD-prevention procedures when you remove and replace components. Ensure that the
chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it
makes good skin contact. Connect the grounding clip to an unpainted surface of the chassis frame to
safely ground unwanted ESD voltages. To guard against ESD damage and shocks, the wrist strap and
cord must operate properly. If no wrist strap is available, ground yourself by touching the metal part of
the chassis.
Removing and Replacing the Power Supply
This section describes how to remove and replace the power supply, and includes the following topics:
•Removing the AC Power Supply, page A-13
•Replacing the AC Power Supply, page A-16

Removing the AC Power Supply

To remove the AC power supply, perform the following steps:
Step1 Power off the adaptive security appliance.
Step2 Remove the power cord and all other cables from the chassis.
Step3 Remove the chassis from the rack if it is rack-mounted. See the “Rack-Mounting the Chassis” section
on page 2-5 for more information.
Step4 Remove the chassis cover. See the “Removing and Replacing the Chassis Cover” section on pageA-10
for more information.
Step5 Place the chassis in an ESD-controlled environment. See the “Working in an ESD Environment” section
on page A-13 for more information.