Cisco Systems OL-2056-02 manual Accessing the Mainboard

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Chapter 5 Installing Memory in the Router

Accessing the Mainboard

Accessing the Mainboard

This section describes how to open the system in order to access the router’s internal components such as memory modules and the ROM. You need a number 2 Phillips or flat-blade screwdriver to perform this procedure.

Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is OFF and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.

Removing the Cisco 3620 or Cisco 3640 Router Cover

Use the following procedure to remove the cover:

Step 1 Power OFF the router. However, to channel ESD voltages to ground, do not unplug the power cable.

Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.

Step 2 Remove all network interface cables from the rear panel.

Step 3 Place the router so that the front panel is facing you. Remove the three screws located on top of the cover near the front edge. (See Figure 5-1or Figure 5-2.) Set the screws aside in a safe place.

Step 4 Lift the front edge of the cover until it clears the front of the chassis. (See Figure 5-1or Figure 5-2.)

Step 5 Pull the cover toward you until the metal tabs on the rear edge separate from the chassis bottom. (See Figure 5-1or Figure 5-2.)

Step 6 Lift the cover until it is free from the chassis and set it aside.

When you are ready to replace the cover, see the “Replacing the Cover on a Cisco 3620 or Cisco 3640 Router” section on page 5-30 .

Cisco 3600 Series Hardware Installation Guide

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OL-2056-02

 

 

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Contents Installing Memory in the Router Accessing the Mainboard Removing the Cisco 3620 or Cisco 3640 Router CoverPerform the following procedure to remove the chassis cover Removing the Cisco 3631 Router CoverLift cover Slide cover Removing the Cisco 3631 Router CoverRemoving the Cisco 3660 Mainboard Tray Replacing Dram and Sdram Dram SIMMs Used in Cisco 3620 and Cisco 3640 Routers Dram Simm Locations in the Cisco 3620 Router Bank Total Simm Memory 16 MBNot installed 16 MB MB-Dual2 24 MB 32 MB 40 MB 48 MB Bank 0 Simm Total MemoryDram Simm Orientation Dram SimmRemoving Dram Simms Top view Front of chassisInstalling Dram SIMMs Repeat through for each SimmSdram DIMMs Used in the Cisco 3631 and Cisco 3660 Router 64 MB Not installed 32 MB 96 MB 128 MB 160 MB 192 MB 256 MB Bank 0 Simm Bank 1 Simm Total Memory11 Sdram Dimm Locations in the Cisco 3660 Router Sdram Dimm Orientation 12 Sdram Dimm13 Removing and Installing Sdram DIMMs Removing Sdram DimmsInstalling Sdram DIMMs Replacing Flash Memory SIMMs16 MB 20 MB 12 MB 24 MB 32 MB 64 MB Bank12 MB 14 Flash Memory Simm Locations on the Cisco 3620 Mainboard Removing Flash Memory SIMMs 16 Flash Memory Simm Locations on the Cisco 3660 MainboardInstalling Flash Memory SIMMs 17 Removing Flash Memory SIMMsReplacing the ROM Cisco 3620, Cisco 3640, and CiscoLocate the ROM on the mainboard. See -19through Figure 19 ROM Location on the Cisco 3620 Mainboard20 ROM Location on the Cisco 3640 Mainboard 22 Removing the ROM from the Cisco 3660 Mainboard Testing ROM Installation CiscoRouter # upgrade rom-monitor preference readonly upgrade Reboot the router using the new ROM imageSelect the ROM image for next reboot Verify the ROM versionReplacing the Cover on a Cisco 3620 or Cisco 3640 Router 24 Replacing the Cisco 3620 Router CoverReplacing the Cover on a Cisco 3631 Router Insert tabs and slide cover Close cover 26 Replacing the Cisco 3631 Router CoverReplacing the Cisco 3660 Mainboard Tray 27 Replacing the Cisco 3660 Mainboard TrayInstalling a Flash Memory Card 28 Setting the Write-Protect Switch 30 Installing a Flash Memory Card in a Cisco 3660 Router Removing a Flash Memory Card Routerconfig# partition slot1 1 2 Enter global configuration modeRouter# configure terminal Partitioning a Flash Memory CardDisplaying the Contents of a Flash Memory Card Copying a Running Configuration File to a Flash Memory Card Router# copy running-config slot03myconfigRouter# copy slot03TESTFILE flash2TESTFILE2 Enter privileged Exec mode as followsCopying a File Between Slots Booting from a Flash Memory Card Router# copy slot03TESTFILE slot1Erasing the Contents of a Flash Memory Card Preventing Electrostatic Discharge Damage Tools and Equipment NeededCompact Flash Memory Card Installation and Removal Removing the Chassis CoverRemoving the Compact Flash Memory Card Removing the Cover from a CiscoInstalling the Compact Flash Memory Card Instructions on formatting the Compact Flash memory cardReinstalling the Cover Replacing the Cover on a CiscoROM monitor to recognize and boot the Flash Formatting Procedures for Compact Flash Memory CardsSafety Information document that accompanied this device Determining the File System on a Compact Flash Memory CardClass B Flash file system CommandFormatting Compact Flash Memory as a DOS File System Router# format flashRouter# copy flashmy-config2 running-config File and Directory ProceduresProcedures for Use with DOS File System File OperationsDelete Files from Compact Flash Memory Display the Contents of a Compact Flash CardDisplay Geometry and Format Information Display the Contents of a File Rename a File in FlashRemove a Directory Directory OperationsCreate a New Directory Procedures for Use with Class B Flash File System Enter a Directory and Determine Which Directory You AreDisplay the Contents of a Compact Flash Memory Card Router# squeeze flash Router# more flashc3725-i-mzOL-2056-02
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