Cisco Systems OL-2056-02 manual Replacing Dram and Sdram

Page 6

Chapter 5 Installing Memory in the Router

Replacing DRAM and SDRAM

Figure 5-4 Removing the Cisco 3660 Mainboard Tray

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VCC OK
SYSTEM	FDX	FDX
	LINK	FDX
	100Mbps	LINK	1
		100Mbps	1
			0

VOICE 2V

VIC	INUSE	INUSE	HIGH SPEED SERIAL
V1			1HSSI
FXS

1
SEE MANUAL BEFORE INSTALLATION	0	V0

HS

SERIAL			EN		LB/CN	RC	RD	TC	TD
4T			ETHERNET
			ETHERNET
SERIAL 3			4E
SERIAL 3	SERIAL 2	SERIAL 1	SERIAL 0
		SERIAL 1	SERIAL 0
			ETH 3	ETH 2	ETH 1				ETH 0
					3	2	1		ETH 0
					3	2	1		0
			EN					LINK
			EN					ACT

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2

Tray levers

3

17335

Caution The mainboard is an ESD-sensitive component. To avoid damage, observe all ESD precautions.

When you are ready to replace the mainboard tray, see the “Replacing the Cisco 3660 Mainboard Tray” section on page 5-33.

Replacing DRAM and SDRAM

Cisco 3600 series routers use two types of dynamic random access memory (DRAM):

•DRAM SIMMs (Used in Cisco 3620 and Cisco 3640 Routers), page 5-7

•SDRAM DIMMs Used in the Cisco 3631 and Cisco 3660 Router, page 5-14

Note SIMMs and DIMMs cannot be interchanged between the router models.

Cisco 3600 Series Hardware Installation Guide

5-6	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 SIMMsBank 12 MB16 MB 20 MB 12 MB 24 MB 32 MB 64 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 slot03myconfigEnter privileged Exec mode as follows Copying a File Between SlotsRouter# copy slot03TESTFILE flash2TESTFILE2 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 OperationsDisplay the Contents of a Compact Flash Card Display Geometry and Format InformationDelete Files from Compact Flash Memory Display the Contents of a File Rename a File in FlashDirectory Operations Create a New DirectoryRemove a 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