Installation guide

16 Upgrading Memory in Cisco 4000 Series Routers

Removing Network Processor Modules

To gain access to shared memory in all routers, you must remove the center network processor

module from the component tray. In the Cisco 4000 router, you must also remove the module on the

right (as viewed from the front of the router). To access the ROM monitor in Cisco 4500,

Cisco 4500-M, Cisco 4700, and Cisco 4700-M routers, remove the module on the left.

If you are upgrading only main memory or Flash memory in a Cisco 4000-M, Cisco 4500,

Cisco 4500-M, Cisco 4700, or Cisco 4700-M router, or the ROM monitor in a Cisco 4000-M router,

you do not need to remove network processor modules. Continue with the section “Memory

Locations” later in this document.

If you are upgrading main memory or Flash memory in a Cisco 4000 router, refer to the section “The

Cisco 4000 Flash EPROM Card” earlier in this document.

Caution Some network processor modules are fastened to the rear of the chassis with two external

screws. You must remove these screws before you can lift the module out of the chassis.

Follow these steps to remove a module:

Step 1 Using a Number 1 Phillips screwdriver, remove the internal module mounting screw from

the end of the module card. Remove the two external rear mounting screws, if present,

from the rear panel and set them aside.

Step 2 Hold the module handle and pull it straight up to lift the module out of its connector. (See

Figure 10.)

Step 3 Place the removed module on an ESD mat.

Caution Do not wiggle the module’s handle or exert any side-to-side pressure. The handle may

work loose and damage the module.

Caution If any of the modules have daughter cards projecting at right angles to the module (see

Figure 11), do not bend the module during installation, because the daughter cards could become

disconnected. Carefully reseat any loosened cards, handling them by the edges without touching any

components.