3Com 3018 (3C13618) CAUTION Use a chip extractor to replace the Boot ROM, To replace the Boot ROM

Maintaining Router Hardware 47

Replacing the Boot ROM When a Boot ROM is damaged or when data becomes corrupted because of a software failure and cannot be corrected, the Boot ROM should be replaced.

Router 3000 Boot ROMs are located at the same position on the mainboard, as shown in Figure 26.

Figure 26 Boot ROM Location

Boot ROM location

CAUTION: Use a chip extractor to replace the Boot ROM.

To replace the Boot ROM:

1Insert the top end of the chip extractor into the Boot ROM socket, turn inward slightly, withdraw the extractor upward and lift the Boot ROM out.

2Put the Boot ROM into the static shielding bag.

3Insert the end of the chip extractor into the socket of the new Boot ROM.

4Position the Boot ROM so that the beveled edge of the socket matches the beveled edge on the Boot ROM and plug it into the Boot ROM socket.

CAUTION: Be careful not to damage or bend the pins at the bottom of the Boot ROM. If the pins are bent, straighten them with needle-nose pliers.

Closing the Router To prevent cables from being pressed or cut off when you close the cover of the Chassis Cover router chassis, roll up all the cables and put them into the chassis before closing

the cover.