Cisco 2504 - 2504 Router Manual de usuario descargar pdf (Pagina 2)

2 Replacing the Boot ROMs in the Cisco 2500 Series and AccessPro PC Card Routers

Removing the Cover or AccessPro PC Card

• Connect the equipment end of the strap to an unpainted surface on the chassis frame or another

proper grounding point or surface. Attach it to the inside bottom of the chassis or to the rear panel

(inside or outside) without making contact with any connectors.

• Avoid contact between equipment and clothing. The wrist or ankle strap only protects the

equipment from ESD voltages on the body; ESD voltages on clothing can still cause damage.

• Handle printed circuit cards by the edges only; avoid touching the components, traces, or any

connector pins.

• Place a removed card component side up on an antistatic surface or in a static shielding bag. If

the component is being returned to the factory, immediately place it in a static shielding bag.

• Do not remove the wrist or ankle strap until the installation is complete.

Caution To avoid damaging the equipment, periodically check the resistance value of the antistatic

strap. The measurement should be between 1 and 10 megohms (Mohms).

Removing the Cover or AccessPro PC Card

To replace the boot ROMs, depending on the model you have, you must remove the cover or remove

the AccessPro PC card to access the boot ROMs. Proceed with the appropriate section.

Removing the Chassis Cover—Cisco 2501–2516 and 2520–2523

This section explains how to remove the chassis cover to access the boot ROMs in the

Cisco 2501–2516 and 2520–2523 models.

Note The Cisco 2517–2519 are different from the other Cisco 2500 series models. To replace the

front cover on Cisco 2517–2519 router/hubs, skip this section and replace the front cover as

explained in the section “Replacing the Front Cover—Cisco 2517–2519 Router/Hubs,” later in this

document.

Required Tools and Equipment

The following tools are required to remove and replace the chassis cover:

• 1/4 inch (0.625 cm) ﬂat-blade screwdriver

• Size M 3.5 (metric) hex-head nut driver (optional)

If You Have a Proceed With the Section On Page

Cisco 2501–2516 or

2520–2523

Removing the Chassis Cover—Cisco 2501–2516 and

2520–2523

Cisco 2517–2519 Removing the Front Cover—Cisco 2517–2519 Router/Hub 5

AccessPro PC card Removing the AccessPro PC Card 6

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Cisco 2504 - 2504 Router Manual de usuario Pagina 2