Cisco 7200 Series Replacement Instructions Manual page 15

Note
Cisco 7206 power supply configuration are the same. Therefore, the illustrations in the following
sections show the Cisco 7206, unless indicated otherwise.
Turning Off the Power Supply and Disconnecting AC Input Power
To turn off the AC-input power supply you plane to replace, complete the following steps:
Step 1
Step 2
To disconnect AC input power to the power supply, complete the following steps:
Step 1
Step 2
Step 3
This completes the procedure for turning off the power supply and disconnecting AC input power.
Proceed to the section "Removing the AC-Input Power Supply."
Removing the AC-Input Power Supply
Complete the following steps to remove an AC-input power supply from a Cisco 7200 series router:
Step 1
Step 2
Step 3
Step 4
Step 5
This completes the procedure for removing the AC-input power supply from a Cisco 7200 series
router. Proceed to the following section "Installing the AC-Input Power Supply and Connecting
AC-Input Power."
The tasks for removing and replacing an AC-input power supply in a dual Cisco 7204 or
Facing the rear of the router, place the power switch (on the power supply) in the OFF (0)
position.
Observe the following items:
•
The green OK LED on the power supply turns off
•
The second power supply maintains full system power (the system continues to
operate as normal)
Unplug the input power cable from the power source.
Push down on the cable-retention clip that secures the input power cable to the router's
power supply.
Unplug the other end of the input power cable from the power supply.
Using a number 2 Phillips screwdriver, loosen the two captive screws on the faceplate of
the power supply (refer to Figure 7).
If the router is not installed in a standard 19-inch rack or in a Telco rack, skip to Step 5.
If the router is installed in a rack, determine if any permanent rack fixtures, such as a
power strip, are obstructing access to the power supply. If a rack fixture is obstructing
access to the power supply, proceed with Step 2.
Use a 3/16-inch flat-blade screwdriver to loosen the screws that secure the router to the
front mounting strips of the rack.
Position at least one person in front of the rack to support the front underside of the router.
From the rear of the rack, carefully push the front of the router out of the rack until there
is enough clearance to remove the power supply from the router.
Grasp the power supply handle and pull the AC-input power supply from the router.
Removing and Replacing an AC-Input Power Supply
15