Chapter 4 Removing and Replacing FRUs
Removing and Replacing the Power Supply
Step 5 Disconnect the
Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046
Figure 4-13 Connecting the DC-Input Wires
Negative 
Positive
Ground
79161
Grounding lug
Grounding lug nuts
Figure 4-14 Connecting the DC-Input Wires (Triple-input Power Supply)
- 
1 
+ 
- 
2 
+
- 
3 
+
Negative 
Positive
120914
Grounding lugs (2) | Ground |
Grounding lug nut |
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| Catalyst 4500 Series Switches Installation Guide |
