Specifications

24 Network Processing Engine Replacement Instructions
Removing and Replacing the Network Processing Engine
Figure 14 Disconnecting Power from a Cisco uBR7200 Series DC-Input Power Supply
Step 4 Repeat Step 1 through Step 3 if a second power supply is installed.
This completes the procedure for disconnecting DC-input power from a Cisco 7200 series router or
Cisco uBR7200 series routers.
Removing the Network Processing Engine
To remove the network processing engine from a Cisco 7200 series router or Cisco uBR7200 series
routers, complete the following steps.
Note The weight of installed power supplies in your Cisco 7200 series router might make it
difficult to remove the network processing engine. If you have difficulty, consider removing power
supplies from the chassis and then removing the network processing engine. See the “Removing and
Replacing an AC-Input or DC-Input Power Supply” section on page 35 for information on removing
and replacing an installed power supply.
This note does not apply to the Cisco uBR7200 series routers; the network processing engine is
installed above the power supplies in the Cisco uBR7200 series routers.
Step 1 Power down the router and disconnect its input power cable. (Refer to the “Powering
Down the Router and Disconnecting Input Power” section on page 19.)
Step 2 Attach an ESD-preventive wrist strap between you and an unfinished chassis surface.
Step 3 Using a number 2 Phillips or a 3/16-inch flat-blade screwdriver, loosen the two captive
installation screws on the faceplate of the network processing engine. (For a Cisco 7200
series router, see Figure 15. For a Cisco uBR7200 series router, see Figure 16.)
If the router is not installed in a standard 19-inch, 4-post or telco rack, skip to Step 7. If
the router is installed in a rack, determine if any permanent rack fixtures, such as a power
strip, are obstructing access to the rear of the router. If a rack fixture is obstructing access
to the router, proceed with Step 4.
12107
Handle
Captive installation screw
(on both sides of power supply)
M5 grounding lug
M4 studs
M5 grounding receptacles
+48V lead
-48V lead
Power switch
Power receptacle