Installation guide

Configuring the Cisco 4000 Series Chassis 3-5
Replacing Network Processor Modules
Step 5 Pull on the handle located on the upper right corner of the chassis to slide the
component tray out of the chassis shell while you support the component tray with
one hand.
Step 6 Set the component tray on your work surface.
Replacing Network Processor Modules
When you have removed the component tray from the router, you can remove or add
network processor modules. If you are replacing shared memory single in-line memory
modules (SIMMs), you must first remove the network processor modules.
Removing Network Processor Modules
Caution Some network processor modules are secured to the rear of the chassis with two
external screws. On modules with external rear mounting screws, including multimode
Fiber-Distributed Data Interface (FDDI) modules, these screws must be removed before the
module can be safely lifted out of the chassis.
Take the following steps to remove a network processor module:
Step 1 Orient the component tray as shown in Figure 3-3, then remove the module
mounting screw from the top of the network processor module. Remove the two
external rear mounting screws if the module has them. Set the screws aside.
Step 2 Grasp the network processor module handle and pull it straight up to lift the
module out of its connector. (See Figure 3-4.)
Step 3 Place the removed module on an ESD mat.