Installation guide

Upgrading System Memory in Cisco 2600 Series Routers

78-5125-04 B0

Accessing the System Board

You must open the chassis to access the system board.

Removing the Chassis Cover on Cisco 261x, Cisco 262x, Cisco 265x, and

Cisco 26xxXM

This section describes the procedure for opening the chassis by removing the chassis cover.

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 powersupplyevenwhenthepowerswitchisOFFand

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 various

warnings that appear in this publication, refer to the

Regulatory Compliance and Safety

Information

document that accompanied this device.

Warning

Two people arerequiredtoliftthechassis.Graspthe chassis underneaththe lower edge and lift with

bothhands. To prevent injury,keepyour back straight and liftwith yourlegs, not yourback. Toprevent

damage to the chassis and components, never attempt to lift the chassis with the handles on the

power supplies or on the interface processors, or by the plastic panels on the front of the chassis.

These handles were not designed to support the weight of the chassis. To see translations of the

warnings that appear in this publication, refer to the

Regulatory Compliance and Safety Information

document that accompanied this device.

Tools Required

You will need the following tools to remove and replace the chassis cover:

• Number 2 Phillips screwdriver

• Electrostatic discharge (ESD)-preventive wrist strap

Removing the Chassis Cover

To remove the chassis cover:

Step 1 Power OFF the router and unplug the AC power cord. If the router uses a DC power supply, remove

power from the DC circuit with the following steps:

a. Locate the circuit breaker on the panel board that services the DC circuit.

b. Switch the circuit breaker to the OFF position.

Step 2 Disconnect all cables from the rear panel of the router.