Removing And Installing An Ac-Input Power Supply - Cisco 7200 Series Instructions Manual

Removing and Installing an AC-Input Power Supply

Removing and Installing an AC-Input Power Supply
The weight of power supplies installed in a Cisco 7200 series router might make it difficult for you
to pull the network processing engine from its chassis slot. If this is the case, consider removing
installed power supplies from the chassis and then removing the network processing engine. The
following sections explain how remove and install an AC-input power supply in a Cisco 7200 series
router.
Removing an AC-Input Power Supply from a Cisco 7200 Series Router
To remove an AC-input power supply from a Cisco 7200 series router, complete the following steps:
Step 1
Step 2
Figure 23
Captive
installation
screw
Step 3
Step 4
Step 5
Step 6
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Ensure that the power switch on the power supply is in the OFF (0) position and input
power is disconnected from the power supply and its power source. (Refer to the section
"Powering Down the Router and Disconnecting Input Power" earlier in this document.)
Using a number 2 Phillips screwdriver, loosen the two captive screws on the faceplate of
the power supply (refer to Figure 23).
If the router is not installed in a standard 19-inch rack or in a Telco rack, skip to Step 6.
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 to Step 3.
AC-Input Power Supply Captive Installation Screws and Handle
Using a 3/16-inch flat-blade screwdriver, 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.
Grasp the power supply handle and pull the power supply from the router.
Handle