Specifications

Network Processing Engine Replacement Instructions 27

Replacing the Network Processing Engine

To install a new network processing engine in the router, complete the following steps.

Note If you are installing an NPE-100 or NPE-150, make sure that you replace the boot ROM on

the I/O controller before attempting to boot your router. See the “Software and Hardware

Requirements” section on page 12 for network processing engine installation requirements.

This note does not apply to Cisco uBR7200 series routers or to the Cisco AS5800 Universal Access

Server router shelf.

Step 1 Ensure that the router is powered down and its input power cable is disconnected from

the router and the power source. See 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 Remove the new network processing engine from its static shielding bag.

Step 4 Using both hands, grasp the network processing engine by its metal carrier edges and

orient the network processing engine so that its printed circuit board components are

upward. (For the Cisco 7200 series routers, see Figure 17. For the Cisco uBR7200 series

routers, see Figure 18.)

Caution Handle the network processing engine by the carrier edges and handle only; never touch

the printed circuit board components or connector pins.

Step 5 Align the left and right edge of the network processing engine’s printed circuit board

between the network processing engine slot guides.

Note For the NPE-175 and NPE-225, you need to align the left and right edge of the

network processing engine’s metal carrier into the guides.

Caution Do not align the network processing engine’s metal carrier between the slot guides (for all

except the NPE-175 and NPE-225). Doing so damages components on the network processing

engine’s printed circuit board as you slide the network processing engine into its chassis slot.

Note The NPE-300 is only compatible with the Cisco 7200 VXR routers; the NPE-300

is keyed to prevent insertion in Cisco 7200 routers (7202, 7204, 7206).