Specifications

28 Memory Replacement Instructions for the Network Processing Engine and Input/Output Controller
Removing and Replacing Memory DRAM SIMMs, SDRAM DIMMs, and Boot ROMs
Step 6 Grasp the I/O controller handle and carefully pull the controller from its chassis slot.
Caution Handle the I/O controller by the carrier edges and handle only; never touch the printed
circuit board components or connector pin. (See Figure 10.)
Step 7 Place the I/O controller on an antistatic surface with its components facing upward, or in
a static shielding bag. If you are returning the I/O controller to the factory, immediately
place it in a static shielding bag.
This completes the procedure for removing an installed I/O controller.
Removing the Network Processing Engine
To remove the network processing engine from a Cisco 7200 series router or Cisco uBR7200 series
router, complete the following steps:
Note Make sure you replace the boot ROM on the I/O controller before attempting to boot a
Cisco 7200 series router that has a newly installed NPE-100 or NPE-150. Refer to the “Software and
Hardware Requirements” section on page 13 for network processing engine installation
requirements.
This note does not apply to Cisco uBR7200 series routers or to the Cisco 7206 and Cisco 7206VXR
as router shelves in a Cisco AS5800 Universal Access Server.
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. Refer to the “Removing
and Replacing an AC-Input or DC-Input Power Supply” section on page 58 for information on
removing and replacing an installed power supply.
This note does not apply to Cisco uBR7200 series routers; the networking processing engine is
installed above the power supplies in 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 21.
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 the Cisco
7200 series, see Figure 19. For the Cisco uBR7200 series, see Figure 20.)
If the router is not installed in a standard 19-inch rack or in a 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 power supply. If a rack fixture is obstructing access to
the power supply, proceed with Step 4.
Step 4 Using a 3/16-inch flat-blade screwdriver, loosen the four screws that secure the router to
the front mounting strips of the rack.
Step 5 Position at least one person in front of the rack to support the front underside of the router.