Specifications

Network Processing Engine Replacement Instructions 37

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

Replacing a Power Supply in a Cisco 7200 Series Router

To install a new AC-input or DC-input power supply in a Cisco 7200 series router, complete the

following steps:

Step 1 Make sure that the power switch on the power supply is in the OFF (O) position.

Step 2 Grasp the power supply handle with one hand and place your other hand underneath the

power supply for support. (See Figure 26.)

Figure 26 Holding the Power Supply—Cisco 7200 Series AC-Input Power Supply Shown

Step 3

Align the power supply to the power supply bay.

Step 4 Slide the power supply completely into the power supply bay until its faceplate is ﬂush

with the router’s rear panel.

Caution When inserting a power supply into the router, do not use unnecessary force; slamming

the power supply into the bay can damage the connectors on the rear of the supply and on the

midplane.

Step 5 Seat the power supply in the router by tightening its captive screws with a number 2

Phillips or a 3/16-inch ﬂat-blade screwdriver.

Note The power supply is not fully seated in the router midplane until you tighten its

captive installation screws (use a number 2 Phillips or a 3/16-inch ﬂat-blade screwdriver).

Step 6 Repeat Step 1 through Step 5 for a second power supply (if present).

Step 7 If there is no second power supply, replace the ﬁller plate on the empty power supply bay.

Using a number 2 Phillips or a 3/16-inch ﬂat-blade screwdriver, tighten the ﬁller plate’s

captive screws.

Step 8 If you pushed the router from the rack, slowly guide the router back into the rack.

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