Avaya BCM50 Installationshandbuch PDF herunterladen (Seite 180)

180 Chapter 21 Replacing a main unit

NN40020-302

For information about replacing the BCM50 main unit:

• Preparing the system for maintenance on page 180

• Removing the main unit on page 180

• Installing the new main unit on page 181

Preparing the system for maintenance

In most cases, if the BCM50 main unit is faulty, the system is already shut down. If this is the case,

continue with the procedure To disconnect the cables on page 180. If the system is still operating,

perform the procedure To shut down the system on page 174.

To disconnect the cables

1 Remove the 25-pair cable from the RJ-21 telephony connector on the front of the main unit.

2 Remove the Ethernet cable from the LAN port.

3 If the main unit is a BCM50a or a BCM50e, remove the Ethernet cable or ADSL line from the

WAN port and the Ethernet cables from the Router card LAN ports.

4 Remove the expansion cables or LAN cables from the expansion ports on the main unit. For

the expansion cables, make sure you mark the cables with the number of the port to which they

connect.

5 If the system uses the external Music Source port, remove the cable from the Music Source

port.

6 If the system uses a UPS, remove the USB cable from the USB port.

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

8 Remove the power supply cord from the main unit.

9 Proceed to Removing the main unit on page 180.

Removing the main unit

The method you use to remove the main unit depends on how the unit is mounted. Use one of the

following procedures to remove the main unit:

• To remove a rack-mounted main unit on page 181

• To remove a wall-mounted main unit on page 181

• To remove a desktop mounted main unit on page 181

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 Installationshandbuch Seite 180