Specifications

40 Memory Replacement Instructions for the Network Processing Engine and Input/Output Controller

Removing and Replacing Memory DRAM SIMMs, SDRAM DIMMs, and Boot ROMs

Installing a New Boot ROM on the NPE-175, NPE-200, NPE-225, or NPE-300

To install a new Boot ROM on the NPE-175, NPE-200, NPE-225, or NPE-300, complete the

following steps:

Step 1 Remove the new boot ROM from its packaging.

Step 2 Align the new boot ROM with the socket (socket U1 on the NPE-175 and NPE-225;

socket U92 on the NPE-200; socket U1 on the NPE-300) in the same orientation as the

old boot ROM. (See Figure 29.)

Step 3 Gently press the boot ROM into the socket. The boot ROM is properly installed when the

top of the boot ROM is ﬂush with the top of the socket.

This completes the steps for installing a new Boot ROM on the network processing engine. Proceed

to the “Replacing the Network Processing Engine” section on page 43.

Replacing the Input/Output Controller

To replace the I/O controller in the router, complete the following steps:

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

the router and the power source. (Refer to the “Powering Down the Router and

Disconnecting Input Power” section on page 21.)

Step 2 Attach an ESD-preventive wrist strap between you and an unﬁnished chassis surface.

Step 3 Using both hands, grasp the I/O controller by its metal carrier edges and orient the I/O

controller so that its printed circuit board components are upward. (See Figure 10.)

Caution Handle the I/O controller by the carrier edges and handle only; never touch the printed

circuit board components or connector pins.

Step 4 Align the left and right edge of the I/O controller between the I/O controller slot guides.

(For a Cisco 7200 series router, see Figure 31. For a Cisco uBR7200 series router, see

Figure 32.)