Specifications

Memory Replacement Instructions for the Network Processing Engine and Input/Output Controller 37

Removing Boot ROMs

Figure 27 Enlargement of the DIP-Type IC Removal Tool and DIP-Type Boot ROM

Step 5 Squeeze the arms of the IC removal tool and gently, but ﬁrmly, pull up on the boot ROM

until its pins are clear of the socket. Apply even pressure to both tips of the IC removal

tool. (See Figure 28.) It might be necessary to gently rock the IC removal tool and boot

ROM end to end until the boot ROM is free of the socket.

Caution To prevent bent pins, pull the boot ROM straight up and out of its socket.

Figure 28 Using the DIP-Type IC Removal Tool to Remove the DIP-Type Boot ROM

Step 6

Set the old boot ROM aside (preferably in an antistatic bag).

This completes the steps for removing the Boot ROM from the I/O controller.

Removing the Boot ROM From the NPE-175, NPE-200, NPE-225, or NPE-300

To remove the boot ROM from the NPE-175, NPE-200, NPE-225, or NPE-300, complete the

following steps:

Step 1 Attach an ESD-preventive strap between you and any unpainted router surface.

Step 2 Place the network processing engine 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 Note the orientation of the installed boot ROM so that you can install the new boot ROM

with the same orientation.

H5888

H6543

AUX

CONSOLE

ENABLED

PCMCIA

EJECT

SLOT 0

SLOT 1

FE MII

FAST ETHERNET INPUT/OUTPUT CONTROLLER

RJ-45

CPU RESET

MII

RJ45

LINK

1O PWR