Cisco 1805 Manuale utente

CHAPTER

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Installing and Replacing CompactFlash Memory

Cards on Cisco 1805 DOCSIS Cable Router

This chapter describes installing and replacing CompactFlash memory cards in Cisco 1805 DOCSIS

cable router. You can perform these procedures when the router has been installed in its working location

with all power and interface cables connected. This chapter contains the following sections:

•Preventing Electrostatic Discharge Damage, page 9-1

•Replacing CompactFlash Memory Cards, page 9-1

Preventing Electrostatic Discharge Damage

CompactFlash memory cards are sensitive to electrostatic discharge (ESD) damage. ESD damage, which

can occur when electronic cards or components are handled improperly, results in intermittent or

complete failures.

To prevent ESD damage, follow these guidelines:

•Always use an ESD wrist or ankle strap and ensure that it makes good skin contact.

•Connect the equipment end of the strap to an unfinished chassis surface.

•Place a removed CompactFlash memory card on an antistatic surface or in a static shielding bag. If

the card will be returned to the factory, immediately place it in a static shielding bag.

•Avoid contact between the card and clothing. The wrist strap protects the card from ESD voltages

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

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

Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be

between 1 and 10 megohms (Mohms).

Replacing CompactFlash Memory Cards

This section describes how to remove and install CompactFlash memory cards.

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Chapter 9 Installing and Replacing CompactFlash Memory Cards on Cisco 1805 DOCSIS Cable Router

Removing a CompactFlash Memory Card

To remove a CompactFlash memory card from an external slot, follow these steps:

Caution If the CF LED is on or blinking, do not remove the CompactFlash memory card. The router could crash,

or the flash memory contents could be corrupted.

Step 1 Press the ejector button next to the CompactFlash memory card. The ejector button moves outward so

that it projects from the panel.

Step 2 Press the ejector button again to unseat the card.

Step 3 Carefully pull the card out of the slot.

Step 4 Place the removed CompactFlash memory card on an antistatic surface or in a static shielding bag.

Step 5 Push the ejector button in until it clicks.

Caution To prevent damage to the ejector mechanism, the ejector button must remain fully seated when it is not

being used to eject a CompactFlash memory card.

Installing a CompactFlash Memory Card

To install a CompactFlash memory card, follow these steps:

Step 1 Make sure that the ejector button is fully seated so that it does not project from the panel.

Note If the ejector button projects from the panel, push it in until it clicks.

Step 2 With the label facing up, insert the connector end of the CompactFlash memory card into the slot until

the card is seated in the connector. The card is keyed so that it cannot be inserted incorrectly.

Note If the ejector button projects from the panel after you insert the CompactFlash memory card,

remove the card, press the ejector button until it clicks, and reinsert the card.

Caution To prevent damage to the ejector mechanism, the ejector button must remain fully seated when not being

used to eject a CompactFlash memory card.

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Chapter 9 Installing and Replacing CompactFlash Memory Cards on Cisco 1805 DOCSIS Cable Router

Using the Compact Flash Guard

The Compact Flash guard (CF-guard) provides protection for the compact flash memory slot.

Note A small flat-head screwdriver is required to attach the CF-guard.

To install the CF-guard, follow these steps:

Step 1 Unpack the CF-guard.

Step 2 Slip the CF-guard flap into the notch in the CompactFlash memory slot.

Step 3 Screw the CF-guard into the screw hole.

158076

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Chapter 9 Installing and Replacing CompactFlash Memory Cards on Cisco 1805 DOCSIS Cable Router

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