Cisco 1721 Access Router Hardware Installation Guide - Installing and Upgrading Router Memory [Cisco 1700 Series Modular Access Routers]

Table Of Contents

Installing and Upgrading Memory and Virtual Private Network Modules

Safety Warnings

Opening the Chassis

Locating Modules

Installing a DIMM

Installing a VPN Module

Closing the Chassis

Installing and Upgrading Memory and Virtual Private Network Modules

This chapter tells how to install or upgrade memory and how to install a Virtual Private Memory (VPN) module in your Cisco 1721 router and includes the following sections:

•Safety Warnings

•Opening the Chassis

•Locating Modules

•Installing a DIMM

•Installing a VPN Module

•Closing the Chassis

Safety Warnings

Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the router. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself.

Warning Only trained and qualified personnel should be allowed to install or replace this equipment.

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

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity.

Warning Read the installation instructions before you connect the system to its power source.

Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.

Warning Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first.

Opening the Chassis

In order to upgrade Cisco 1721 router memory, you must open the chassis. Opening the chassis requires a number one Phillips screwdriver.

Follow these steps to open the chassis:

Step 1 Make sure the router is turned off and is disconnected from the power supply.

Step 2 Turn the router upside down, and rest the top of the router on a flat surface.

Step 3 Use the Phillips screwdriver to remove the four screws that hold the top and bottom of the chassis together, as shown in Figure C-1.

Figure C-1 Removing the Chassis Screws

Step 4 Turn the router back to its original position (top up).

Step 5 Gently pull the top of the router (which is facing up toward you) up and away from the bottom of the router (which is resting on the flat surface).

At this point, you might have to disconnect the fan, which is inside the top of the router chassis, from the motherboard. Do this by disconnecting the fan cable from the connector (labeled FAN) on the motherboard.

Step 6 Place the router bottom on an antistatic mat, and begin installing memory.

Locating Modules

Figure C-2 shows where to find slots for a dual in-line memory module (DIMM) and a VPN module on the router motherboard.

Figure C-2 Cisco 1700 Motherboard—Memory Locations

Installing a DIMM

You can install a DIMM to increase the amount of dynamic random-access memory (DRAM) in the router.

Follow these steps to install a DIMM on the router motherboard:

Step 1 Locate the DIMM slot on the motherboard.

Step 2 Remove any existing DIMM by pulling the DIMM slot guides (shown in Figure C-3) away from the DIMM and down toward the motherboard.

Figure C-3 Installing a DIMM

Step 3 Insert the DIMM into the DIMM slot, making sure that the notches on the edge of the DIMM are inserted over the bars inside the DIMM slot, as in Figure C-3.

Step 4 Firmly press the DIMM into the slot until the two DIMM slot guides on each side of the slot move up and over the end of the DIMM, as in Figure C-3. If the guides do not move up over the edge of the DIMM, move them with your hands.

Installing a VPN Module

Follow the steps in this section to install a VPN module.

Step 1 Install the two standoffs on the module, as shown in Figure C-4.

Figure C-4 Installing the Standoffs on the VPN Module

Step 2 Locate the VPN module socket, and insert the VPN module, as shown in Figure C-5.

Figure C-5 VPN Module Location

Step 3 Pushing down as indicated in Figure C-6, plug the VPN module into the socket.

Figure C-6 Seating the VPN Module

Step 4 Turn the motherboard over, and attach the standoffs to it by using the screws provided, as shown in Figure C-7.

Figure C-7 Securing the Standoff to the Router Motherboard

Closing the Chassis

After installing memory or a VPN module on the motherboard, close the chassis by following these steps:

Step 1 If you disconnected the fan from the motherboard as described in the "Opening the Chassis" section, reconnect the fan cable to the connector labeled FAN on the motherboard.

Step 2 Locate the posts that protrude from the inside of the chassis cover, and locate the corresponding openings on the chassis bottom.

Step 3 Line up the posts with the corresponding openings, as shown in Figure C-8, and carefully slide the posts into the openings, taking care not to damage the router motherboard with the posts.

Figure C-8 Closing the Chassis

Step 4 Replace the screws that you removed when you opened the chassis. (See Figure C-1.)

	Cisco 1721 Access Router Hardware Installation Guide
	Installing and Upgrading Router Memory
Cisco 1721 Access Router Hardware Installation Guide Preface Cisco 1721 Router Overview Installation Troubleshooting Technical Specifications Cabling Specifications Installing and Upgrading Router Memory Ordering and Configuring an ISDN Line	Download this chapter Installing and Upgrading Router Memory Download the complete book Cisco 1721 Router Hardware Installation Guide (PDF - 1 MB) Table Of Contents Installing and Upgrading Memory and Virtual Private Network Modules Safety Warnings Opening the Chassis Locating Modules Installing a DIMM Installing a VPN Module Closing the Chassis Installing and Upgrading Memory and Virtual Private Network Modules This chapter tells how to install or upgrade memory and how to install a Virtual Private Memory (VPN) module in your Cisco 1721 router and includes the following sections: •Safety Warnings •Opening the Chassis •Locating Modules •Installing a DIMM •Installing a VPN Module •Closing the Chassis Safety Warnings Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the router. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. Warning Only trained and qualified personnel should be allowed to install or replace this equipment. Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Warning Read the installation instructions before you connect the system to its power source. Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. Warning Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first. Opening the Chassis In order to upgrade Cisco 1721 router memory, you must open the chassis. Opening the chassis requires a number one Phillips screwdriver. Follow these steps to open the chassis: Step 1 Make sure the router is turned off and is disconnected from the power supply. Step 2 Turn the router upside down, and rest the top of the router on a flat surface. Step 3 Use the Phillips screwdriver to remove the four screws that hold the top and bottom of the chassis together, as shown in Figure C-1. Figure C-1 Removing the Chassis Screws Step 4 Turn the router back to its original position (top up). Step 5 Gently pull the top of the router (which is facing up toward you) up and away from the bottom of the router (which is resting on the flat surface). At this point, you might have to disconnect the fan, which is inside the top of the router chassis, from the motherboard. Do this by disconnecting the fan cable from the connector (labeled FAN) on the motherboard. Step 6 Place the router bottom on an antistatic mat, and begin installing memory. Locating Modules Figure C-2 shows where to find slots for a dual in-line memory module (DIMM) and a VPN module on the router motherboard. Figure C-2 Cisco 1700 Motherboard—Memory Locations Installing a DIMM You can install a DIMM to increase the amount of dynamic random-access memory (DRAM) in the router. Follow these steps to install a DIMM on the router motherboard: Step 1 Locate the DIMM slot on the motherboard. Step 2 Remove any existing DIMM by pulling the DIMM slot guides (shown in Figure C-3) away from the DIMM and down toward the motherboard. Figure C-3 Installing a DIMM Step 3 Insert the DIMM into the DIMM slot, making sure that the notches on the edge of the DIMM are inserted over the bars inside the DIMM slot, as in Figure C-3. Step 4 Firmly press the DIMM into the slot until the two DIMM slot guides on each side of the slot move up and over the end of the DIMM, as in Figure C-3. If the guides do not move up over the edge of the DIMM, move them with your hands. Installing a VPN Module Follow the steps in this section to install a VPN module. Step 1 Install the two standoffs on the module, as shown in Figure C-4. Figure C-4 Installing the Standoffs on the VPN Module Step 2 Locate the VPN module socket, and insert the VPN module, as shown in Figure C-5. Figure C-5 VPN Module Location Step 3 Pushing down as indicated in Figure C-6, plug the VPN module into the socket. Figure C-6 Seating the VPN Module Step 4 Turn the motherboard over, and attach the standoffs to it by using the screws provided, as shown in Figure C-7. Figure C-7 Securing the Standoff to the Router Motherboard Closing the Chassis After installing memory or a VPN module on the motherboard, close the chassis by following these steps: Step 1 If you disconnected the fan from the motherboard as described in the "Opening the Chassis" section, reconnect the fan cable to the connector labeled FAN on the motherboard. Step 2 Locate the posts that protrude from the inside of the chassis cover, and locate the corresponding openings on the chassis bottom. Step 3 Line up the posts with the corresponding openings, as shown in Figure C-8, and carefully slide the posts into the openings, taking care not to damage the router motherboard with the posts. Figure C-8 Closing the Chassis Step 4 Replace the screws that you removed when you opened the chassis. (See Figure C-1.)
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