5-35
Cisco 7600 Series Router Installation Guide
OL-4503-24
Chapter 5 Removal and Replacement Procedures
Removing and Replacing the Power Supply
Note The 4000 W DC-input power supply provides voltages of 2700 W or 4000 W for single and redundant
configurations. Some configurations require cable tie-wraps. For more information, refer to Installing a
PWR-4000-DC Power Supply in a Cisco 7613 Router, page 5-86.
Step 5 Remove the two screws securing the left inner terminal block cover and one screw securing the right
inner terminal block cover. Remove both inner terminal block covers.
Note You must remove three terminal block covers for the 4000 W DC-input power supply.The
left-side inner terminal block cover has two securing screws and the right-side inner terminal
block cover has one securing screw.
Step 6 Remove the plastic insulator from over the terminal area (Figure 5-39).
Step 7 Disconnect the DC-input wires from the terminal block in this order:
• Positive (+)
• Negative (-)
Note You must remove DC-input wires from two terminal blocks for the 4000 W DC-input power
supply (if both terminal blocks are used).
Step 8 Disconnect the PWR-4000-DC power supply ground.
Warning
When installing the unit, the ground connection must always be made first and disconnected last.
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