Cisco CAtalyst 4500 Series Installation Manual page 127

Chapter 4 Removing and Replacing FRUs
Disconnect the DC-input wires from the terminal block. Disconnect the ground
Step 5
wire last (see
When installing or replacing the unit, the ground connection must always be
Warning
made first and disconnected last. Statement 1046
Figure 4-13
Negative
Positive
Ground
Grounding lug
Figure 4-14
Grounding lugs (2)
78-14409-08
Figure 4-13
Connecting the DC-Input Wires
RS-485 serial
communnication
connector
DC-input wires
Grounding lug nuts
Connecting the DC-Input Wires (Triple-input Power Supply)
Grounding lug nut
Removing and Replacing the Power Supply
or Figure 4-14).
DC-input wires
-
1
Negative
+
- Positive
2
+
-
3
+
Ground
Catalyst 4500 Series Switches Installation Guide
4-13