Avaya BCM50 Installation Manual download pdf (Page 188)

188 Chapter 23 Replacing an expansion unit

NN40020-302

For information about replacing an expansion unit:

• Disconnecting the cables on page 188

• Removing the expansion unit on page 188

• Removing the MBM on page 190

• Inserting the MBM in the new expansion unit on page 190

• Installing the new expansion unit on page 191

Disconnecting the cables

Use the following procedure to disconnect the expansion unit from the other equipment.

To disconnect the expansion unit cables

1 Use Element Manager to disable the media bay module (MBM) that is installed in the

expansion unit. For more information, see the Administration Guide.

2 Disconnect the expansion cable from the expansion port on the expansion unit.

3 Disconnect the LAN cable from the LAN port on the expansion unit.

4 Disconnect all of the telephone lines and extension cables from the MBM inserted in the

expansion unit.

If more than one cable exists, mark the cables to identify the port from which you removed

them.

5 Rotate the power supply retention clip to free the power supply cord.

6 Remove the power supply cord from the expansion unit.

7 Proceed to Removing the expansion unit on page 188.

Removing the expansion unit

How you remove the expansion unit depends on how the unit is mounted. Use one of the following

procedures to remove the expansion unit:

• To remove a rack-mounted expansion unit on page 189

• To remove a wall-mounted expansion unit on page 189

• To remove a desktop-mounted expansion unit on page 189

Warning: Leakage currents

You must disconnect the telephony and data networking cables from the system before

disconnecting the power cord from a grounded outlet.

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Avaya BCM50 Installation Manual Page 188