Cisco 7200 Series User manual

1
Doc. No.
Cisco Systems, Inc.
All rights reserved.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
Cisco Systems, Inc.
Corporate Headquarters
Copyright © 1996
Cisco 7200 Series Memory Replacement
Instructions
Product Numbers: MEM-NPE-8MB=, MEM-NPE-16MB=, MEM-NPE-32MB=,
MEM-NPE-64MB=, MEM-NPE-128MB=, MEM-I/O-FLC8M=, MEM-I/O-FLC16M=,
MEM-NPE-FLC20M=
This document explains how to replace the main, Flash, and ROM monitor memory for the
Cisco 7200 series routers. Read this entire document before upgrading the memory in your router.
Note Use this document in conjunction with the Cisco 72xx Installation and Configuration Guide
that shipped with your Cisco 7200 series router.
This document contains the following sections:
•Additional Information, page 2
•Cisco 7200 Series Overview, page 3
•Memory Systems Overview, page 6
•Installation Prerequisites, page 9
—List of Parts and Tools, page 9
—Safety Guidelines, page 9
—Ensuring Easy Access to the Router, page 11
•Removing and Replacing Memory SIMMs and the Boot ROM, page 12
—Powering Down the Router and Disconnecting Input Power, page 13
—Removing the Input/Output Controller, page 14
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Additional Information
—Removing the Network Processing Engine, page 15
—Removing Memory SIMMs, page 16
—Installing New Memory SIMMs, page 17
—Removing the Boot ROM, page 19
—Installing a New Boot ROM, page 20
—Replacing the Input/Output Controller, page 21
—Replacing the Network Processing Engine, page 22
—Reconnecting Input Power and Powering Up the Router, page 24
•Installing and Removing a Flash Memory Card, page 26
•Removing and Installing an AC-Input Power Supply, page 28
•Cisco Connection Online, page 31
Additional Information
The Cisco Internetwork Operating System (Cisco IOS) software running your router contains
extensive features and functionality. The effective use of many of these features is easier if you have
more information at hand.
Cisco documentation and additional literature are available on a CD-ROM called Cisco Connection
Documentation, Enterprise Series, which ships with your chassis. The CD is updated and shipped
monthly, so it might be more up to date than printed documentation. To order additional copies of
the Cisco Connection Documentation, Enterprise Series CD, contact a Cisco Sales or Customer
Service representative. You can also access Cisco technical documentation on the World Wide Web
URL http://www.cisco.com.
For additional information on configuring the Cisco 7200 series routers, the following
documentation resources are available to you:
•Cisco Connection Documentation, Enterprise Series CD-ROM
•For systems with Cisco IOS Release 11.1(6), a Cisco-approved Release 11.1(6) beta software
version, or a later Cisco IOS release, refer to the following modular configuration and modular
command reference publications, as appropriate for your configuration:
—Configuration Fundamentals Configuration Guide
—Configuration Fundamentals Command Reference
—Wide-Area Networking Configuration Guide
—Wide-Area Networking Command Reference
—Network Protocols Configuration Guide
—Network Protocols Command Reference
—Bridging and IBM Networking Configuration Guide
—Bridging and IBM Networking Command Reference
—Configuration Builder Getting Started Guide
—Troubleshooting Internetworking Systems

3
Cisco 7200 Series Overview
•For hardware installation and maintenance information on the Cisco 7200 series routers, refer to
the Cisco 72xx Installation and Configuration Guide that shipped with your router.
•To obtain general information about documentation, refer to the section “Cisco Connection
Online,” on page 31, or call Customer Service at 800 553-6387 or 408 526-7208. Customer
Service hours are 5:00 a.m. to 6:00 p.m. Pacific time, Monday through Friday (excluding
Cisco-observedcompanyholidays).Youcan alsosend e-mailto [email protected].Youcan also
refer to the Cisco Information Packet that shipped with your router.
Cisco 7200 Series Overview
The Cisco 7200 series consists of the four-slot Cisco 7204 and the six-slot Cisco 7206. The
Cisco 7200 series routers support multiprotocol, multimedia routing and bridging with a wide
variety of protocols and any combination of Ethernet, Fast Ethernet, Token Ring, Fiber Distributed
Data Interface (FDDI), and serial media. Network interfaces reside on port adapters that provide a
connection between the routers’ three Peripheral Component Interconnect (PCI) buses and external
networks. Port adapters can be placed in any available port adapter slot, in any desired combination.
The front of the Cisco 7200 series routers provides access to an Input/Output (I/O) controller and up
to four or six network interface port adapters. The I/O controller has a local console port for
connecting a data terminal (or data terminal equipment [DTE]) and an auxiliary port for connecting
a modem (or other data communications equipment [DCE]) or other devices for configuring and
managing the router; two Personal Computer Memory Card International Association (PCMCIA)
slots for Flash memory cards; and an optional Fast Ethernet port. The Fast Ethernet port provides a
100-Mbps connection to the network. Figure 1 shows the Cisco 7204. Figure 2 shows the
Cisco 7206.
Note The I/O controller is available with or without a Fast Ethernet port. Figure 1 and Figure 2
show an I/O controller with a Fast Ethernet port.
Figure 1 Cisco 7204—Front View
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Cisco 7200
SERIES

4
Cisco 7200 Series Overview
Figure 2 Cisco 7206—Front View
The port adapters installed in the Cisco 7200 series routers are of the same type as those installed on
the second-generation Versatile Interface Processors (VIP2s) in the Cisco 7000 family routers. The
port adapters installed in the Cisco 7200 series routers support online insertion and removal (OIR).
Port adapter slots in the Cisco 7200 series are numbered from left to right, beginning with port
adapter slot 1 and continuing through port adapter slot 4 for the Cisco 7204, and slot 6 for the
Cisco 7206. Port adapter slot 0 is the Fast Ethernet port on the I/O controller. Figure 3 shows the port
adapter slot numbering for the Cisco 7206.
Note In Figure 3, a blank port adapter is installed in port adapter slot 5. To ensure adequate airflow
across the router’s internal components, ensure that each port adapter slot is filled with either a port
adapter or a blank port adapter.
Figure 3 Port Adapter Slot Numbering—Cisco 7206 Shown
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5
Cisco 7200 Series Overview
The rear of the Cisco 7200 series routers provides access to the network processing engine and up
to two 280W, AC-input or DC-input power supplies (refer to Figure 4).
Figure 4 Cisco 7200 Series Router—Rear View
The network processing engine has no external connectors or LEDs. There are two handles for
removing and installing the network processing engine and two captive installation screws for
securing it to the chassis.
A fully configured Cisco 7200 series router operates with only one installed power supply; however,
a second, optional power supply provides hot-swappable, load-sharing, redundant power. The power
supply has the router’s main power switch and either an AC-input power receptacle, or a hardwired
DC-input power cable (depending on the type of installed power supply). Adjacent to the power
supply bays there is a 10 x 32-inch chassis ground receptacle that provides a chassis ground
connection for ESD equipment or a grounding wire (refer to Figure 4).
Note The Cisco 7200 routers come equipped with either one 280W AC-input or one 280W
DC-input power supply; a second 280W AC-input or DC-input power supply is available for the
router. Figure 4 shows the rear of a Cisco 7200 series router that is configured with a single 280W
AC-input power supply. (A power supply filler plate is installed over the second power supply bay.)
Three internal fans draw cooling air into the chassis interior and across internal components to
maintain an acceptable operating temperature (refer to Figure 4). The three fans are enclosed in a
tray that is located in the subchassis.
The I/O controller, port adapters, power supplies, and network processing engine slide into their
respective chassis slots and connect directly to the router’s midplane; there are no internal cables to
connect. The midplane distributes DC power from the power supplies to the I/O controller, port
adapters, fan tray, and network processing engine.
H6423
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Internal fans
Network processing
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AC-input
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Power switch

6
Memory Systems Overview
Memory Systems Overview
The Cisco 7200 series memory systems are divided between the I/O controller and the network
processing engine. The memory systems provide the following functions:
•Main memory (DRAM)—Stores the running configuration and routing tables. The
Cisco Internetwork Operating System (Cisco IOS) software executes from main memory.
•Shared memory—Used for packet buffering by the router’s network interfaces.
•Flash memory SIMM—Stores the boot helper software. The boot helper image allows you to
boot the router when Flash memory does not contain a valid system image.
•Flash memory card(s)—Stores the default Cisco IOS software image.
•Erasable programmable read-only memory (EPROM)-based memory—The ROM monitor
permits you to boot the Cisco IOS image from Flash memory if a boot helper image is not present
in boot Flash memory.
•Nonvolatile random-access memory (NVRAM)—Stores the system configuration,
environmental monitoring logs, and the virtual configuration register.
Table 1 lists the Cisco 7200 series processor and memory specifications. Table 2 lists the network
processing engine factory-installed DRAM configurations and their product numbers. Figure 5
shows the I/O controller with the optional Fast Ethernet port. Figure 6 shows the network processing
engine.
Table 1 Cisco 7206 Processor and Memory Specifications
1. RISC—reduced instruction set computing
2. DRAM—dynamic random-access memory
3. SRAM—static random-access memory
4. ROM—read-only memory
Component Description Specification Location
Network processing engine Processor 150-MHz Orion RISC1Socket U201
Main memory (DRAM)216 to 128 MB Bank 1: U12 and U4
Bank 0: U25 and U18
SRAM31 MB Sockets U700 through U703
Sockets U800 through U803
Unified secondary cache 512 KB U2, U10, U14, and U26
I/O Controller Flash SIMM 4 MB Socket U99
Flash memory card 8 to 20 MB PCMCIA
Slot 0 and Slot 1
Nonvolatile RAM 128 KB Socket U41
Boot ROM4256 KB Socket U20

7
Memory Systems Overview
Table 2 DRAM SIMM Configurations
Figure 5 Input/Output Controller—With Optional Fast Ethernet Port
1. These products are also available as DRAM upgrades. For example, to upgrade a network processing engine from 16 MB to 32 MB of
DRAM, order product number MEM-NPE-16MB=.
Total DRAM DRAM Bank 0 Quantity DRAM Bank 1 Quantity Product Number
16 MB U18 and U25 2 8-MB SIMMs U4 and U12 – MEM-NPE-16MB1
24 MB U18 and U25 2 8-MB SIMMs U4 and U12 2 4-MB SIMMs MEM-NPE-24MB
32 MB U18 and U25 2 16-MB SIMMs U4 and U12 – MEM-NPE-32MB1
64 MB U18 and U25 2 32-MB SIMMS U4 and U12 – MEM-NPE-64MB1
128 MB U18 and U25 2 32-MB SIMMs U4 and U12 2 32-MB SIMMs MEM-NPE-128MB1
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8
Memory Systems Overview
Figure 6 Network Processing Engine
Proceed to the following section “Installation Prerequisites.”
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9
Installation Prerequisites
Installation Prerequisites
This section provides a list of parts and tools you need to remove main, Flash, and ROM monitor
memory in the Cisco 7200 series routers. This section also includes safety and ESD-prevention
guidelines to help you avoid injury to yourself and damage to the equipment.
List of Parts and Tools
You need the following tools and parts to replace the main, Flash, and ROM monitor memory from
the network processing engine and the I/O controller. If you need additional equipment, contact a
service representative for ordering information.
•New DRAM or Flash single in-line memory modules (SIMMs), or ROM monitor device
•Number 2 Phillips screwdriver
•3/16-inch flat-blade screwdriver
•Your own ESD-prevention equipment or the disposable grounding wrist strap included with all
upgrade kits, FRUs, and spares
•An antistatic mat or surface
•Small needlenose pliers
In addition, the ROM monitor device replacement requires a DIP-type integrated circuit (IC)
removal tool (see Figure 7) or a small flat-blade screwdriver.
Figure 7 IC Removal Tool
Safety Guidelines
Following are safety guidelines that you should follow when working with any equipment that
connects to electrical power or telephone wiring.
Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
•Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
•Disconnect all power and external cables before moving a chassis.
•Do not work alone when potentially hazardous conditions exist.
•Never assume that power has been disconnected from a circuit; always check.
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Installation Prerequisites
•Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe.
•Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Telephone Wiring Guidelines
Use the following guidelines when working with any equipment that is connected to telephone
wiring or to other network cabling:
•Never install telephone wiring during a lightning storm.
•Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
•Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
•Use caution when installing or modifying telephone lines.
Preventing Electrostatic Discharge Damage
Electrostaticdischarge(ESD)damages equipmentand impairs electricalcircuitry. ESD occurswhen
printed circuit boards or memory SIMMs are improperly handled and results in complete or
intermittent failures.
The I/O controller and network processing engine consist of a printed circuit board that is fixed in a
metal carrier. Electromagnetic interference (EMI) shielding, connectors, and a handle are integral
components of the carrier. Handle the I/O controller and network processing engine by their carrier
edges and handle; never touch the printed circuit board or connector pins.
Figure 8 shows the location of a printed circuit board when it is installed in a network processing
engine or I/O controller metal carrier. Do not touch the printed circuit board when handling either
component.
Figure 8 Handling the I/O Controller and the Network Processing Engine
Handle SIMMs by the edges only; avoid touching the memory modules, pins, or traces (the metal
fingers along the connector edge of the SIMM) (refer to Figure 9). Always wear a preventive
antistatic strap whenever handling SIMMs.
Printed circuit board
Metal carrier
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Installation Prerequisites
Figure 9 Handling a SIMM
Although the metal carrier helps to protect the I/O controller and the network processing engine
from ESD, wear a preventive antistatic strap whenever handling the I/O controller or network
processing engine. Ensure that the strap makes good skin contact and connect the strap’s clip to an
unpainted chassis surface to safely channel unwanted ESD voltages to ground.
If no wrist strap is available, ground yourself by touching the metal part of the chassis.
Caution Use a number 2 Phillips’s screwdriver to tighten the captive installation screws on the I/O
controller and the network processing engine. These screws prevent accidental removal, provide
proper grounding for the router, and help to ensure that the I/O controller and network processing
engine are properly seated in the router midplane.
Following are guidelines for preventing ESD damage:
•Always use an ESD wrist strap or ankle strap when installing or replacing the I/O controller,
network processing engine, or port adapters. Ensure that the ESD strap makes contact with your
skin.
•Handle the I/O controller, network processing engine, or port adapters by their metal carrier
edges and handle; avoid touching the printed circuit board or any connector pins.
•When removing the I/O controller, network processing engine, or port adapters, place them on
an antistatic surface with the printed circuit board components facing upward, or in a static
shielding bag. If you are returning an I/O controller, network processing engine, or port adapter
to the factory, immediately place it in a static shielding bag.
Caution Periodically check the resistance value of the antistatic strap. The measurement should be
within the range of 1 and 10 megohms.
Ensuring Easy Access to the Router
If your Cisco 7200 series router is installed in a standard 19-inch rack or in a 19-inch Telco rack,
cables from other equipment in the rack may obstruct access to the rear of the router. Also, rack
power strips or other permanent fixtures may obstruct access to the router. Review the following
guidelines to ensure easy access to the rear of the router when it is installed in a rack. If the router is
not installed in a rack, or if you already have clear access to the rear of the router, proceed to the
following section “Removing and Replacing Memory SIMMs and the Boot ROM.”
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Removing and Replacing Memory SIMMs and the Boot ROM
Use the following guidelines to ensure easy access to the rear of the router when it is installed in a
rack:
•Ensure that you have at least three to four feet of working space at the rear of the router.
•If cables from other equipment in the rack fall in front of the rear end of the router, carefully
gather the cables (using care not to strain them) and use cable ties to anchor them away from the
rear of the router.
•If access to the rear of the router is partially blocked by a power strip or some other permanent
rack fixture, detach the router from the rack and carefully slide it forward until there is enough
clearance to remove the power supply, the network processing engine, and the subchassis from
the router. Detailed steps for detaching the router from the rack are contained in the following
section “Removing the Network Processing Engine.”
Caution Make sure that at least one other person is available to support the front of the router as
you slide it out from the rack and, if necessary, to continue to support it while you remove and insert
the power supply, network processing engine, or subchassis.
Removing and Replacing Memory SIMMs and the Boot ROM
There is one Flash memory SIMM on the I/O controller (refer to Figure 5) and four main memory
(DRAM) SIMMs on the network processing engine (refer to Figure 6); the replacement instructions
are the same for the Flash memory and DRAM SIMMs.
The following sections explain how to remove and replace the Flash memory SIMM on the I/O
controller, and how to remove and replace the DRAM SIMMs from the network processing engine.
Removing and replacing the SIMMs involves the following steps:
1Powering Down the Router and Disconnecting Input Power
2Removing the Input/Output Controller
3Removing the Network Processing Engine
4Removing Memory SIMMs
5Installing New Memory SIMMs
6Removing the Boot ROM
7Replacing the Input/Output Controller
8Replacing the Network Processing Engine
9Reconnecting Input Power and Powering Up the Router
These tasks are described in detail in the following subsections.
Note The tasks for removing and replacing the I/O controller and network processing engine in the
Cisco 7204 and the Cisco 7206 are the same. Therefore, the illustrations in the following sections
show the Cisco 7206, unless indicated otherwise.

13
Removing and Replacing Memory SIMMs and the Boot ROM
Powering Down the Router and Disconnecting Input Power
To power down a Cisco 7200 series router that has an installed AC-input power supply, complete the
following steps:
Note Before powering down the router, use thecopy running-config startup-config command to
save the router’s running configuration to nonvolatile memory.
Step 1 Facing the rear of the router, place the power switch (on the power supply) in the OFF (0)
position. Repeat this action if a second power supply is installed in the router.
Step 2 Observe the following items:
•The green OK LED on the power supply turns off
•The fans stop operating
•The LEDs on the I/O controller turn off
•The LEDs on the port adapters turn off
To disconnect AC-input power to a Cisco 7200 series router, complete the following steps:
Step 1 Unplug input power cable from the power source.
Step 2 Push down on the cable-retention clip that secures the input power cable to the router’s
power supply.
Step 3 Unplug the other end of the input power cable from the power supply (refer to Figure 10).
Figure 10 Disconnecting Power from a Cisco 7200 Series AC-Input Power Supply
Step 4 Repeat Step 2 through Step 1 if a second power supply is installed.
This completes the procedure for powering down the router and disconnecting input power. Proceed
to the following section “Removing the Input/Output Controller.”
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Power switch

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Removing and Replacing Memory SIMMs and the Boot ROM
Removing the Input/Output Controller
To remove an I/O controller from a Cisco 7200 series router, complete the following steps:
Step 1 Power down the router and disconnect the input power cable. Refer to the section
“Powering Down the Router and Disconnecting Input Power” earlier in this document.
Step 2 Attach an ESD-preventative wrist strap between you and an unfinished chassis surface.
Step 3 Disconnect the cables from the I/O controller’s console, auxiliary, and Fast Ethernet (if
present) ports (refer to Figure 11).
Figure 11 Cisco 7200 Series Input/Output Controller Ports, Handle, and Captive Screws
Step 4 Remove the Flash memory cards (if present) from the I/O controller’s PCMCIA slots.
Refer to the section “Installing and Removing a Flash Memory Card” later in this
document.
Step 5 Using a number 2 Phillips screwdriver, loosen the two captive installation screws on the
faceplate of the I/O controller (refer to Figure 11).
Step 6 Grasp the I/O controller handle and carefully pull the controller from its chassis slot.
Caution Handle the I/O controller by the carrier edges and handle only; never touch the printed
circuit board components or connector pins (refer to Figure 8).
Step 7 Place the I/O controller on an antistatic surface with its components facing upward, or in
a static shielding bag. If you are returning the I/O controller to the factory, immediately
place it in a static shielding bag.
This completes the procedure for removing the I/O controller. Proceed to the section “Removing the
Network Processing Engine.”
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15
Removing and Replacing Memory SIMMs and the Boot ROM
Removing the Network Processing Engine
To remove the network processing engine from a Cisco 7200 series router, complete the following
steps:
Note The weight of installed power supplies in your Cisco 7200 series router might make it
difficult to remove the network processing engine. If you have difficulty, consider removing power
supplies from the chassis and then removing the network processing engine. Refer to the section
“Removing and Installing an AC-Input Power Supply” on page 28 of this document for information
on removing and replacing an installed power supply.
Step 1 Power down the router and disconnect its input power cable. Refer to the section
“Powering Down the Router and Disconnecting Input Power” earlier in this document.
Step 2 Attach an ESD-preventative wrist strap between you and an unfinished chassis surface.
Step 3 Using a number 2 Phillips screwdriver, loosen the two captive installation screws on the
faceplate of the network processing engine (refer to Figure 12).
If the router is not installed in a standard 19-inch rack or in a Telco rack, skip to Step 7.
If the router is installed in a rack, determine if any permanent rack fixtures, such as a
power strip, are obstructing access to the power supply. If a rack fixture is obstructing
access to the power supply, proceed with Step 4.
Step 4 Using a 3/16-inch flat-blade screwdriver, loosen the four screws that secure the router to
the front mounting strips of the rack.
Step 5 Position at least one person in front of the rack to support the front underside of the router.
Step 6 From the rear of the rack, carefully push the front of the router out of the rack until there
is enough clearance to remove the network processing engine.
Step 7 Grasp the two network processing engine handles and carefully pull the network
processing engine from its chassis slot.
Caution Handle the network processing engine by the carrier edges and handles only; never touch
the printed circuit board components or connector pins (refer to Figure 8).

16
Removing and Replacing Memory SIMMs and the Boot ROM
Figure 12 Cisco 7200 Series Network Processing Engine Captive Screws and Handles
Step 8 Place the network processing engine on an antistatic surface with its printed circuit board
components facing upward, or in a static shielding bag.
This completes the procedure for removing the network processing engine. Proceed to the section
“Removing Memory SIMMs.”
Removing Memory SIMMs
This section explains how to remove memory SIMMs that are installed on the I/O controller and the
network processing engine. To remove the installed SIMMs, complete the following steps:
Step 1 Attach an ESD-preventive wrist strap between you and an unpainted router surface.
Step 2 Place the I/O controller or the network processing engine on an antistatic mat or surface
(ensure that you are wearing an antistatic device, such as a wrist strap).
Step 3 Position the I/O controller or the network processing engine so that the handle is away
from you and the edge connector is toward you.
Step 4 Locate the SIMMs.
•The Flash SIMM on the I/O controller occupies socket U99 (refer to Figure 5).
•The DRAM SIMMs on the network processor engine occupy sockets U18, U25, U4,
and U12 (refer to Figure 6).
Note SIMMs installed in your system might look different from the SIMMs shown in the following
illustrations.
H6540
Captive
installation
screw Handle
NETWORK PROCESSING ENGINE-150
Network processing
engine AC-input power supply
NPE-150

17
Removing and Replacing Memory SIMMs and the Boot ROM
Step 5 Release the spring clips from the SIMM that you want to remove, and release the SIMM
from the socket (refer to Figure 13).
Figure 13 Releasing the SIMM Spring Clips
Step 6 When both ends of the SIMM are released from the socket, grasp the ends of the SIMM
with your thumb and forefinger and pull the SIMM completely out of the socket. Handle
the edges of the SIMM only; avoid touching the memory module or pins, and the metal
traces, or fingers, along the socket edge.
Step 7 Place the SIMM in an antistatic bag to protect it from ESD damage. You can use the
SIMMs that you remove in compatible equipment.
Step 8 Repeat Step 4 through Step 7 for the remaining SIMMs.
This completes the SIMM removal procedure. Proceed to the following section “Installing New
Memory SIMMs.”
Installing New Memory SIMMs
The Flash SIMM on the I/O controller in located in socket U99; the DRAM SIMMs on the network
processing engine are located in sockets U18, U25, U4, and U12 (refer to Figure 5 and Figure 6).
Caution Handle SIMMs by the edges only; avoid touching the memory modules, pins, or traces
(the metal fingers along the connector edge of the SIMM) (refer to Figure 9).
Polarization notch
DRAM SIMM card
Pull the tabs away with 
your thumbs, bracing your 
forefingers against the 
posts. Raise the SIMM 
to a vertical position.
H2017
Faceplate edge of 
the system card

18
Removing and Replacing Memory SIMMs and the Boot ROM
To install memory SIMMs in the I/O controller and the network processing engine, complete the
following steps:
Note With the I/O controller or the network processing engine in the same orientation as the
previous procedure (with the handle away from you and the edge connector toward you), you will
install the first SIMM in the socket farthest from you. Then you will install the last SIMM in the
socket closest to you.
Step 1 Remove a new SIMM from the antistatic bag.
Caution To prevent DRAM errors and to ensure your system initializes correctly at startup, DRAM
bank 0 (socket U25 and U18) must contain two SIMMs of the same type. You may also install up to
two SIMMs of the same type in bank 1 (socket U12 and U4); however, bank 0 must always contain
two SIMMs.
Step 2 Orient the SIMM so its connector edge (the metal fingers) is down and the component
side is facing you (refer to Figure 14).
Figure 14 Cisco 7200 Series Main Memory SIMM
Step 3 Hold the sides of the SIMM between your thumb and middle finger, with your forefinger
against the far edge, opposite the connector edge. (See Figure 9.)
Step 4 Tilt the SIMM to approximately the same angle as the socket and insert the entire
connector edge into the socket.
Caution When inserting SIMMs, use firm but not excessive pressure. If you damage a socket, you
must return the I/O controller or the network processing engine to the factory for repair.
Step 5 Gently push the SIMM into the socket until the spring clips snap over the ends of the
SIMM. If necessary, rock the SIMM gently back and forth to seat it properly.
Step 6 Repeat Steps 1 through Step 5 for the remaining SIMMs.
Alignment holes
Connector edge
Polarization notch
H2407

19
Removing and Replacing Memory SIMMs and the Boot ROM
Step 7 When all SIMMs are installed, check all alignment holes (two on each SIMM), and
ensure that the spring retainer is visible. If it is not, the SIMM is not seated properly. If
any SIMM appears misaligned, carefully remove it and reseat it in the socket. Push the
SIMM firmly back into the socket until the retainer springs snap into place.
This completes the SIMM replacement procedure. If you plan to replace the boot ROM, proceed to
the following section “Removing the Boot ROM.” If you do not plan to replace the boot ROM,
proceed to the section “Replacing the Input/Output Controller” later in this document.
Removing the Boot ROM
The ROM monitor is in located in socket U20 on the I/O controller (refer to Figure 5). To remove
the boot ROM device, complete the following steps:
Step 1 Attach an ESD-preventive strap between you and any unpainted router surface.
Step 2 Place the I/O controller flat on an antistatic mat or surface and locate the boot ROM
device.
Step 3 Carefully remove the new boot ROM from its packaging and verify that the new boot
ROM is the correct version for this upgrade. Return the new boot ROM to its packaging.
Step 4 Place the angled tips of the IC removal tool beneath the ends of the boot ROM (refer to
Figure 15).
Figure 15 Enlargement of the IC Removal Tool and Boot ROM
Step 5 Squeeze the arms of the IC removal tool and gently, but firmly, pull up on the boot ROM
until its pins are clear of the socket. Apply even pressure to both tips of the IC removal
tool (refer to Figure 16). It might be necessary to gently rock the IC removal tool and boot
ROM end to end until the boot ROM is free of the socket.
Caution To prevent bent pins, pull the boot ROM straight up and out of its socket.
H5888

20
Removing and Replacing Memory SIMMs and the Boot ROM
Figure 16 Using the IC Removal Tool to Remove the Boot ROM
Step 6 Set the old boot ROM aside (preferably in an antistatic bag).
This completes the steps for removing the Boot ROM. Proceed to the section “Installing a New Boot
ROM.”
Installing a New Boot ROM
To install a new Boot ROM, complete the following steps:
Step 1 Remove the new boot ROM device from its packaging.
Step 2 Align the new boot ROM with the U20 socket, and note the notch at the end of the socket
and boot ROM. Match the notch at the end of the boot ROM with the notch on the socket.
If the boot-ROM notch is not aligned with the socket notch, the boot ROM will be
damaged when power is turned on.
Step 3 Applying pressure evenly, gently press the boot ROM’s pins into the holes in the
U20 socket. (See Figure 17.) Take care not to bend any pins. You can straighten bent pins
using small needlenose pliers; however, a broken pin means that the boot ROM is
unusable, and you must order a new one.
Caution To prevent bent pins, push the boot ROM straight down into its socket, applying pressure
evenly.
Figure 17 Inserting the Boot ROM into the Socket
Step 4 When you have inserted the new boot ROM all the way into its socket, check around the
boot ROM for any bent pins. Pins bent underneath the boot ROM are difficult to see.
H6543
ENABLED
PCMCIA
EJECT
SLOT 0
FE
ENABLE
FE LINK
CPU RESET
1O POWER
OK
SLOT1
FE MII
AUX
CONSOLE
H5967