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Cisco Systems 3745 Series, 3600 Series, 3725 Series Upgrading System Memory in Cisco 3745 Routers

Models: 3745 Series 3725 Series 3600 Series

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Replacing Connections to the Router

Upgrading System Memory in Cisco 3745 Routers

Replacing Connections to the Router

To make final connections to the router, follow these steps:

Warning Read the installation instructions before connecting the system to the power source. Statement 1004

Step 1 Replace all network connections.

Step 2 Do one of the following:

•AC-powered router: Plug the power cord into a 3-terminal, single-phase power source that provides power within the acceptable range (100 to 240 VAC, 50 to 60 Hz).

•DC-powered router: Remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position.

Step 3 Turn on the power switch. The power LED on the front panel of the router should come on.

Step 4 Check the Sys LED on the right side of the front panel to verify that it goes on after a few seconds delay when booting.

Step 5 If you have problems, see the “Obtaining Technical Assistance” section on page 28.

Step 6 Proceed to the “Recovering Compact Flash Memory and System Images” section on page 27.

Upgrading System Memory in Cisco 3745 Routers

Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord.

Statement 1

Removing the Cisco 3745 Mainboard Tray

To remove the mainboard tray, follow these steps:

Step 1 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the connectors.

Step 2 Turn off the power, but do not unplug the power cord.

Caution The Cisco 3745 router can have more than one power supply. Be sure that all power supplies are powered off and that all LEDs are dark.

Step 3 Place the router on a flat surface so that the front panel faces you, and open the small access door at the right-hand edge of the front panel.

Step 4 Loosen the two captive screws located behind the access door. (See Figure 6.)

Upgrading System Memory in Cisco 3700 Series Routers

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Cisco Systems 3745 Series, 3600 Series Upgrading System Memory in Cisco 3745 Routers, Replacing Connections to the Router

Contents

Upgrading System Memory in Cisco 3700 Series Routers Product NumbersMEM3725-64D=, MEM3725-128D= Safety Recommendations, page Tools and Equipment Needed, page Memory Capacities, page Memory Configurations, pageRecovering Compact Flash Memory and System Images, page Memory CapacitiesDynamic Memory Memory ConfigurationsCompact Flash Memory Safety RecommendationsDIMM or SODIMM Total MemoryWarning IMPORTANT SAFETY INSTRUCTIONS Safety WarningsWarning Definition Note SAVE THESE INSTRUCTIONSRemarque CONSERVEZ CES INFORMATIONS Attention IMPORTANTES INFORMATIONS DE SÉCURITÉWarnung WICHTIGE SICHERHEITSANWEISUNGEN Hinweis BEWAHREN SIE DIESE SICHERHEITSANWEISUNGEN AUFMerk TA VARE PÅ DISSE INSTRUKSJONENE Advarsel VIKTIGE SIKKERHETSINSTRUKSJONERAviso INSTRUÇÕES IMPORTANTES DE SEGURANÇA Nota GUARDE ESTAS INSTRUÇÕESWarning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement Safety with Electricity Preventing Electrostatic Discharge Damage Tools and Equipment NeededUpgrading System Memory in Cisco 3725 Routers Removing the Cisco 3725 Router Cover SDRAM DIMM Location and Orientation Replacing Cisco 3725 SDRAMFigure 3 SDRAM DIMM Orientation in the Cisco 3725 Router Removing SDRAM DIMMsFigure 2 SDRAMM DIMM Locations in the Cisco 3725 Router Step 5 If necessary, repeat Step 3 and Step 4 for the other DIMM Step 6 Proceed to the “Installing SDRAM DIMMs” section on pageReplacing CompactFlash Memory Cards Installing SDRAM DIMMs“Replacing CompactFlash Memory Cards” section on page “Replacing the Cisco 3725 Cover” section on pageReplacing the Cisco 3725 Cover Removing the Cisco 3745 Mainboard Tray Upgrading System Memory in Cisco 3745 RoutersReplacing Connections to the Router Upgrading System Memory in Cisco 3745 Routers Figure 6 Captive Screws on a Cisco 3745 RouterUpgrading System Memory in Cisco 3700 Series Routers OL-5423-02Fan tray Figure 7 Removing the Front Panel from a Cisco 3745 RouterHinges SDRAM SODIMM Location and Orientation Replacing Cisco 3745 SDRAMFigure 9 SDRAMM SODIMM Location in the Cisco 3745 Router Removing SDRAM SODIMMsMemory module Installing SDRAM SODIMMsStep 6 Proceed to the “Installing SDRAM DIMMs” section on page Replacing CompactFlash Memory Cards “Replacing the Cisco 3745 Mainboard” section on pageStep 7 Proceed to either of the following as appropriate “Replacing CompactFlash Memory Cards” section on pageReplacing the Cisco 3745 Mainboard Access door Figure 13 Installing the Front Panel on a Cisco 3745 RouterHinges Front panelFigure 14 Captive Screws on a Cisco 3745 Router Replacing Connections to the RouterObtaining Documentation Using the xmodem CommandCisco.com Recovering Compact Flash Memory and System ImagesObtaining Technical Assistance Documentation FeedbackOrdering Documentation Cisco Technical Support WebsiteObtaining Additional Publications and Information Submitting a Service RequestDefinitions of Service Request Severity http//cisco.com/univercd/cc/td/doc/pcat