Installation guide

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Cisco ASA 5500-X Series Hardware Installation Guide

OL-32129-01

Chapter 4 Maintenance and Upgrade Procedures for the ASA 5500-X

Remove and Install the Power Supply

Before You Begin

• The color coding of the DC input power supply leads depends on the color coding of the DC power

source at your site. Typically, green or green/yellow is used for ground (GND), black is used for –48

V on the negative (–) terminal, and red is used for RTN on the positive (+) terminal. Ensure that the

lead color coding you choose for the DC input power supply matches the lead color coding used at

the DC power source.

• Make sure that the chassis ground is connected on the chassis before you begin installing the

DC power supply. See Preventing Electrostatic Discharge Damage, page 2-2 for more information.

Procedure

Step 1 Make sure that the chassis ground is connected on the chassis before you begin installing the DC

power supply.

Step 2 Turn off the circuit breaker to the power supply.

Step 3 From the front of the chassis, verify that the power switch is in the Standby position.

Step 4 Move the circuit-breaker switch handle to the Off position, and apply tape to hold it in the Off position.

Step 5 Use a 10 gauge wire-stripping tool to strip each of the three wires coming from the DC input power

source. Strip the wires to 0.27 inch (7 mm) +

0.02 inch (0.5 mm). Do not strip more than the

recommended length of wire because doing so could leave the wire exposed from the DC power supply

connection. (See Figure 4-22.)

Figure 4-22 Stripping the DC Input Power Source Wire

Warning

An exposed wire lead from a DC input power source can conduct harmful levels of electricity. Be sure

that no exposed portion of the DC input power source wire extends from the terminal block plug.

Statement 122

Step 6 Identify the positive, negative, and ground feed positions for the DC power supply connection. The

recommended wiring sequence is as follows (see Figure 4-23 on page 4-19):

• Ground lead wire (middle)

• Positive (+) lead wire (left)

• Negative (–) lead wire (right)

1 We recommend that you strip the wire to 0.27 inch (7 mm).

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