Cisco 4000 Series Upgrade Manual page 21

Caution
touch the surface components to avoid damaging them.
Step 4
If you have completed all memory upgrade procedures, proceed to the section "Replacing Network
Processor Modules" on page 22.
Replacing the ROM Monitor EPROM Device
The ROM monitor is stored in an EPROM device on the Cisco 4500 and Cisco 4500-M.
(See Figure 8 on page 12.) Two versions of the label of the ROM monitor EPROM are shown in
Figure 16.
Figure 16
To upgrade the ROM monitor, replace the old EPROM labeled "SIERRA ROM MON" with the new
EPROM labeled "ROM MON V5.2(4)."
Take the following steps to replace the ROM monitor EPROM.
Step 1
Step 2
Step 3
Caution
components backward will damage them.
Proceed to the next section, "Replacing Network Processor Modules."
You will feel some resistance, but do not use excessive force on the SIMM and do not
Check the alignment of each SIMM to make sure that it is straight and that the alignment
holes are lined up with the plastic socket guides.
Cisco 4500 and Cisco 4500-M ROM Monitor Memory Devices
Old device
SIERRA
ROM MON
© 1994 by
cisco Systems >jr
Open the chassis and expose the ROM monitor EPROM following the procedures in the
sections "Accessing the Internal Components of the Router" on page 5 and "Removing
Network Processor Modules" on page 8.
With the ROM monitor EPROM in location U68 exposed (see Figure 8), gently extract the
old EPROM with an EPROM extraction tool or a small flat-blade screwdriver and set the
old ROM monitor EPROM aside.
Insert the new ROM monitor EPROM in the empty socket in the orientation shown in
Figure 8, being careful not to crush any of the bottom pins. To straighten out a bent pin, use
needlenose pliers. Align the notch in the new ROM monitor EPROM with the notch in the
ROM socket, ignoring the orientation of the label.
The notch on the EPROM must match the notch on the socket on the card. Installing the
Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory
Memory Replacement Procedures
New device
ROM MON V5.2 (4)
17206202 U68
© 1994 by
cisco Systems
21