Cisco 1805 Manuel

CHAPTER

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Installing and Upgrading Internal Modules in

Cisco 1805 Cable Routers

This chapter describes how to install or upgrade modules that are located internally within the

Cisco 1805 DOCSIS cable router: memory modules and advanced integration modules (AIMs). You

need to remove the cover from the router to install or remove any of these items. The chapter contains

the following sections:

•Safety Warnings, page 8-1

•Modules Internal to the Cisco 1805 Cable Router, page 8-2

Note Before you install, operate, or service the system, read the Regulatory Compliance and Safety

Information for Cisco 1840 Routers for important safety information and translations of the warnings

that appear in this guide.

Safety Warnings

Warning

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

Statement 1

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.

Statement 43

Warning

During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly

touch the backplane with your hand or any metal tool, or you could shock yourself.

Statement 94

Warning

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

Statement 1001

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Warning

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

Statement 1004

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.

Statement 1026

Modules Internal to the Cisco 1805 Cable Router

This section tells how to install a small-outline dual in-line memory module (SODIMM) and an

advanced integration module (AIM) in the Cisco 1805 cable router. It contains the following

subsections:

•Opening the Chassis, page 8-2

•Locating Modules, page 8-4

•Installing a SODIMM, page 8-5

•Installing an AIM, page 8-6

•Closing the Chassis, page 8-10

All the module replacement procedures in this section require removal of the chassis cover. Before you

perform any of the module replacement procedures, disconnect the power and remove the cover as

described in the “Opening the Chassis” section on page 8-2. After you complete the module replacement

procedures, install the chassis cover as described in the “Closing the Chassis” section on page 8-10.

Opening the Chassis

To open the chassis, follow these steps. You need a number one Phillips screw driver to complete this

procedure.

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

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 screw that holds the top and bottom of the chassis together.

(See Figure 8-1.)

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Figure 8-1 Removing the Chassis Screw

Step 4 Insert a flat-head screwdriver into the slots at the screwdriver pry points and rotate the screwdriver

90 degrees to disengage the top cover from the chassis. See Figure 8-2.

Figure 8-2 Screwdriver Pry Points

Step 5 Turn the router right side up (top up).

Step 6 Gently slide the top of the router (which is facing up toward you) away and up from the bottom of the

router (which is resting on the flat surface). See Figure 8-3.

1Router cover fastening screw

232509

LINK

ONLINE

HWIC-

CABLE-D-2

POWER

CABLE

HWIC

4ESW

PWR3xLNKPWR2

xLNKPWR1

xLNKPWR0xLNK

1Screwdriver pry points

232513

LINK

ONLINE

HWIC-

CABLE-D-2

POWER

CABLE

HWIC

4ESW

PWR 3x LNK PWR 2x LNK PWR 1x LNK PWR 0x LNK

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Figure 8-3 Removing the Cover of the Cisco 1805 Router

Step 7 Place the router bottom on an antistatic mat, and begin installing the memory modules.

Locating Modules

Figure 8-4 shows where the connector for the SODIMM or the AIM is located on the Cisco 1805 cable

router motherboard.

1Slide cover back from router chassis 2Rotate cover to remove from router chassis

232510

HWIC

4ESW

PWR 3x LNK PWR 2x LNK PWR 1x LNK PWR 0x LNK

LINK

ONLINE

HWIC-

CABLE-D-2

POWER

CABLE

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Figure 8-4 Cisco 1805 Cable Router (Internal View)

Caution Do not, under any circumstances, tamper with or attempt to remove the safety shields protecting the

high-speed WAN interface cards (HWIC) slots and connectors.

Installing a SODIMM

You can install a SODIMM to increase the amount of DRAM in the router.

To install a SODIMM on the router motherboard, follow these steps:

Step 1 Locate the SODIMM socket on the motherboard.

Step 2 Remove any existing SODIMM by gently pulling the spring-loaded clips on the end of the socket far

enough to clear the SODIMM, and gently pulling the SODIMM up and away from the socket. See

Figure 8-5.

1Ground screw 7AIM module

2Interface card slot 0 8SODIMM socket

3USB port 9Power supply connection

4CompactFlash memory card slot 10 System fan

5Interface card slot 1 11 Power supply

6Safety shields for WIC/HWIC slots and

connectors

911

232511

HWIC

4ESW

PWR3xLNKPWR2xLNKPWR1xLNKPWR0xLNK

LINK

ONLINE

HWIC-

CABLE-D-2

POWER

CABLE

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Figure 8-5 Removing a SODIMM

Step 3 Insert the SODIMM into the SODIMM socket, as shown in Figure 8-6.

Figure 8-6 Installing a SODIMM

Step 4 Firmly press the SODIMM into the socket until the spring-loaded clips on the socket snap over the end

of the SODIMM.

Installing an AIM

The Cisco 1805 cable router has the capability to support a single AIM module. To install an AIM, follow

the procedure given here.

1Spring-loaded clips 2SODIMM

103155

1SODIMM 2Insert and rotate into socket.

103154

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Caution When you install an AIM, always wear 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 part of the chassis.

Caution Handle AIMs by the edges only. AIMs are ESD-sensitive components and can be damaged by

mishandling.

Accessory Kit to Use

Some AIMs are provided with multiple accessory kits that contain different configurations of mounting

hardware. Mounting hardware for the Cisco 1805 cable router consists of two machine thread metal

standoffs, two machine thread metal screws, and one plastic standoff.

To install an AIM module on the Cisco 1805 cable router, use the hardware in mounting kit 69-1316-01.

Installation Procedure

To install the AIM, perform the following steps. You need a number 2 Phillips screwdriver or flat-head

screwdriver to complete this procedure.

Step 1 Find the metal standoff attachment locations on the system board near the AIM connector, indicated by

a star pattern, as shown in Figure 8-7.

Figure 8-7 Location of Metal Standoff Attachment Locations

Step 2 Install the two metal standoffs from the accessory kit into the system board in the metal standoff

attachment locations. Use a 1/4-inch nut driver to tighten the standoffs. Locations for AIM standoffs are

denoted by a star pattern around the standoff mounting holes.

Caution Make sure that the standoffs are installed straight. Tighten them gently but firmly. The shoulder must be

seated tightly against the system board.

121107

System board

AIM connector

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Step 3 Insert the plastic standoff (Figure 8-8) from the accessory kit into the hole in the system board. See

Figure 8-9. Press the standoff firmly into the system board to be sure that it is locked to the board.

Note The plastic standoff snaps into the system board. Be sure to insert the locking end of the standoff

into the system board. The locking end is the shortest end of the standoff. Figure 8-8 identifies

the locking end of the plastic standoff used with AIMs.

Figure 8-8 Plastic Standoff Orientation

82620

AIM end

Locking end

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Figure 8-9 Connecting the AIM to the System Board

Step 4 Insert the connector on the AIM into the AIM connector on the system board. (See Figure 8-9.)

Note Be sure to press firmly on the AIM until the board seats onto the connector. The plastic standoff

must snap into the hole in the AIM board. (See Figure 8-9.)

Step 5 Insert the screws from the accessory kit through the AIM into the metal standoffs. (See Figure 8-9.)

Carefully tighten the screws with a Phillips screwdriver.

Step 6 Check that the AIM is installed correctly on the system board. (See Figure 8-10.)

121108

Metal standoffs

Snap-in

plastic

standoff

AIM

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Chapter 8 Installing and Upgrading Internal Modules in Cisco 1805 Cable Routers

Modules Internal to the Cisco 1805 Cable Router

Figure 8-10 Correctly Installed AIM

Applying the AIM Label

The AIM label for the chassis might be in the AIM mounting kit, or it might be attached to the label on

the AIM card. Apply the chassis label as follows:

Step 1 If the chassis label is attached to the label on the AIM card, carefully tear off the chassis label at the

perforation. If the chassis label is in the AIM mounting kit, remove the label from the kit bag.

Step 2 Peel the chassis label from its backing.

Step 3 If there is a suitable space, apply the chassis label to the back of the chassis. If no suitable space is

available on the back of the chassis, apply the label to the top cover at the back edge. The label must be

visible with the chassis installed.

Note Do not apply the AIM label for the chassis to a blank cover plate, to any removable network

module or interface card, or over any holes, screws, chassis vents, or existing labels.

Closing the Chassis

To close the chassis, follow these steps:

Step 1 Rotate the cover down onto the chassis. Then slide the cover back onto the bottom of the chassis. See

Figure 8-11.

Step 2 Push firmly to close.

Step 3 Turn the router upside-down.

58696

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