Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 285

Chapter 4 Removal and Replacement Procedures
To remove a DC-input PEM, follow these steps:
Verify that power is off to the DC circuit for the PEM that you are removing. As an added precaution,
Step 1
place the appropriate safety flag and lockout devices at the source power circuit breaker, or place a piece
of adhesive tape over the circuit breaker handle to prevent accidental power restoration while you are
working on the circuit.
Loosen the two captive installation screws on the PEM. (See
Step 2
Slide the PEM part way out of the chassis so that you have access to the PEM terminal block screws.
Step 3
(See Figure
Step 4 Disconnect the DC-input wires from the PEM terminal block in this order:
Positive (+)
1.
Negative (–)
2.
Note
Grasp the PEM with one hand, and place your other hand underneath the PEM, as shown in
Step 5
and slide the PEM completely out of the chassis. Set the PEM aside.
If the PEM bay is to remain empty, install a blank PEM filler plate (Cisco part number 800-16719-01)
Step 6
over the opening, and secure it in place with the two captive installation screws.
Figure 4-59
Captive installation screws
OL-5781-08
4-60.)
It is not necessary to disconnect the system ground connection.
DC-Input PEM
Catalyst 6503 DC PEM
Removing and Installing PEMs
Figure 4-59.)
Catalyst 6500 Series Switches Installation Guide
Figure 4-61,
4-79