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Cisco 7201 Installation and Configuration Guide
OL-11364-04
Chapter 4 Replacing Cisco 7201 Field-Replaceable Units
Removing and Installing a DC Power Supply
Figure 4-10
Removing the Ground Lugs
Caution
The DC return connection to this system is to remain isolated from the system frame and chassis (DC-I).
Step 1
On the front of the router, turn the power switch to the standby (|) position.
Step 2
Switch the circuit breaker to the off position, and tape the switch handle to the off position.
Step 3
Pull the terminal block plug from the terminal block.
Step 4
Locate the DC power supply grounding stud.
Step 5
Remove the nut, ground lug, star washer, ground lug, and star washer and save for reuse on the new DC
power supply.
Step 6
Move the power up restrictor to the left to gain access to the upper power supply captive installation
screw.
Step 7
Use a Number 2 Phillips screwdriver to unscrew the upper power supply captive installation screw.
Step 8
Unscrew the lower power supply captive installation screw on the lower left of the power supply.
Step 9
Grasping the captive installation screws, pull the power supply from the chassis.
This complete the procedure for removing the DC power supply.
Installing the DC Power Supply
Warning
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than: 120 VAC, 20A U.S. (240 VAC, 10A international).
Statement 1005
Warning
Never install an AC power module and a DC power module in the same chassis.
Statement 1050
This section provides instructions for installing the DC power supply ground leads and installing the
DC-input power leads.
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