Specifications

36 Network Processing Engine Replacement Instructions

Removing and Replacing an AC-Input or DC-Input Power Supply

To remove an AC-input or DC-input power supply from a Cisco 7200 series router, complete the

following steps:

Step 1 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. (See the “Powering

Down the Router and Disconnecting Input Power” section on page 19.)

Step 2 Using a number 2 Phillips or a 3/16-inch, ﬂat-blade screwdriver, loosen the two captive

screws on the faceplate of the power supply. (See Figure 25.)

If the router is not installed in a standard 19-inch, 4-post 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.

Figure 25 Power Supply Captive Installation Screws and Handle—Cisco 7200 Series

AC-Input Power Supply Shown

Step 3

Using a 3/16-inch ﬂat-blade screwdriver, loosen the screws that secure the router to the

front mounting strips of the rack.

Step 4 Position at least one person in front of the rack to support the front underside of the router.

Step 5 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.

Step 6 Grasp the power supply handle and pull the power supply from the router.

Caution To maintain agency compliance requirements and meet EMI emissions standards for the

Cisco 7200 series chassis with a single power supply, the power supply ﬁller plate must remain in

the power supply adjacent to the installed power supply. Do not remove this ﬁller plate from the

router unless you intend to install a redundant power supply.

Step 7 Repeat Step 1 through Step 6 for the other installed power supply (if present).

This completes the procedure for removing an AC-input or DC-input power supply from a

Cisco 7200 series router.

H6745

Captive

installation

screw

Handle