Installation guide

14 Upgrading Memory in Cisco 4000 Series Routers
The Cisco 4000 Flash EPROM Card
Removing the Flash EPROM Card
Follow these steps to remove the Flash EPROM card from a Cisco 4000 router in order to gain access
to main memory, or to replace the original Flash EPROM card:
Step 1 Using a Number 1 Phillips screwdriver, remove the two mounting screws from the top of
the card and set them aside. See Figure 4 for the location of these screws. This figure
shows the original Flash EPROM daughter card for the Cisco 4000; if your daughter card
has been replaced, its appearance will differ.
Caution To prevent damage to the Flash EPROM card, handle it only by the sides.
Step 2 Holding the Flash EPROM card by its edges, pull straight up to lift it out of its 96-pin
connector. (See Figure 8.)
Figure 8 Cisco 4000 Flash EPROM Card and Connector, Side View
If you are also upgrading shared memory on the Cisco 4000 motherboard, continue with the section
“Removing Network Processor Modules” later in this document.
If you are upgrading only main memory on the Cisco 4000 motherboard, continue with the section
“Memory Locations” later in this document.
If you are installing a new Flash EPROM card, you may also need to install updated boot ROMs to
provide support for the new card. If your boot ROMs are Cisco IOS Release 10.2(8) or earlier,
continue with the section “Upgrading the ROM” later in this document. If your ROM supports a later
version of the Cisco IOS, you do not need to replace the boot ROMs. Continue with the section
“Installing the Flash EPROM Card (Cisco 4000 Router Only)” later in this document.
Adding Memory to the Flash EPROM Card
Follow the procedures in this section to install additional Flash EPROMs on the original Cisco 4000
Flash EPROM card, shown in Figure 4 and Figure 9. You must also replace the existing
programmable array logic (PAL) device with a new PAL.
Note You do not need to remove the Flash EPROM card for this upgrade procedure. Do not try to
remove the existing Flash EPROMs; they are permanently installed.
96-pin connector
Software update jumpers
H4466