Nortel Networks BCM50 manual Special tools, Preparing the system for maintenance

190Chapter 24 Replacing an internal component

Refer to the following sections for information on replacing an internal component:

•“Preparing the system for maintenance”

•“Removing the main unit” on page 191

•“Opening the main unit case” on page 192

•“Removing an internal component” on page 194

•“Inserting the new component” on page 198

•“Closing the main unit case” on page 201

•“Installing the main unit” on page 202

Special tools

Before you replace the components, ensure you have the following equipment:

•Phillips screwdriver #2, with a 3.5-inch blade

•3/16-inch slot screwdriver

•antistatic wrist grounding strap

Caution: You must wear an antistatic grounding strap at all times when handling electronic components. Failure to do so can result in damage to the equipment.

Preparing the system for maintenance

If the system is still operating, perform the following procedure. If the system is not operating, continue to “To disconnect the cables” on page 191.

To shut down the system

1Check for a recent backup of the BCM50 system programming.

2If there is no recent backup, use Element Manager to back up the system data. For information about backing up the system data, refer to the BCM50 Administration Guide (N0016868).

3In Element Manager, from the Administration tab, click the Utilities folder to expand it.

4Select Reset from the Utilities folder.

5Click Reboot BCM50 System to reboot the system. The BCM50 system begins the shutdown process.

6Unplug the main unit, when the status and power LEDs go from solid green to flashing orange.

7Continue to the next step, “To disconnect the cables” on page 191.

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