Specifications

36 Memory Replacement Instructions for the Network Processing Engine and Input/Output Controller
Removing and Replacing Memory DRAM SIMMs, SDRAM DIMMs, and Boot ROMs
Removing Boot ROMs
A DIP-type boot ROM is located in socket U20 on the I/O controller (see Figure 1). A PLCC-type
boot ROM is located in socket U1 on the NPE-175 (see Figure 4), in socket U92 on the NPE-200
(see Figure 5), in socket U1 on the NPE-225 (see Figure 6), and in socket U1 on the NPE-300 (see
Figure 7).
Replacing the boot ROM on the I/O controller requires a DIP-type IC removal tool (see Figure 8) or
a small flat-blade screwdriver. Replacing the boot ROM on the NPE-175, NPE-200, NPE-225, or the
NPE-300 requires a PLCC-type IC extractor tool (see Figure 9).
Caution A PLCC-type boot ROM does not have pins that plug into the socket; instead, the contacts
are on the sides of the boot ROM and along the inner sides of the socket. Therefore, you cannot use
a small flat-blade screwdriver to remove a PLCC-type boot ROM. Forcing a small screwdriver or
other tool between the boot ROM and the sides of the socket to pry out the boot ROM will damage
the component or the socket or both.
The following sections explain how to remove the boot ROM from the I/O controller and from the
NPE-175, NPE-200, NPE-225, and the NPE-300.
Removing the Boot ROM from the I/O Controller
To remove the boot ROM from the I/O controller, 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.
Step 1 Attach an ESD-preventive strap between you and any unpainted router surface.
Step 2 Place the I/O controller flat on an antistatic mat or surface and locate the boot ROM.
Step 3 Carefully remove the new boot ROM from its packaging and verify that it is the correct
version for this upgrade. Return the new boot ROM to its packaging.
Step 4 Place the angled tips of the DIP-type IC removal tool beneath the ends of the boot ROM.
(See Figure 27.)