Disconnect The Bcm50 Expansion Unit Cables - Nortel BCM50 Installation And Maintenance Manual

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Disconnect the BCM50 Expansion Unit cables

Refer to the following sections for information on replacing a BCM50 Expansion Unit:
• "Disconnect the BCM50 Expansion Unit cables" on page 196
• "Remove the BCM50 Expansion Unit" on page 197
• "Remove the media bay module" on page 198
• "Insert the media bay module in the new BCM50 Expansion Unit" on page 199
• "Install the new BCM50 Expansion Unit" on page 199
• "Connect the cables" on page 199
• "Test and troubleshoot the BCM50 system" on page 177

Disconnect the BCM50 Expansion Unit cables

1 Check for a recent backup of the BCM50 programming. If there is no recent backup, use
Element Manager to back up of all the system data. For information about backing up the
system data, refer to BCM50 Administration Guide (N0xxxxxxx).
2
Use Element Manager to disable the media bay module (MBM) that is installed in the BCM50
Expansion Unit you are removing. Refer to BCM50 Administration Guide (N0xxxxxxx) for
more information.
3
Disconnect the expansion cable from the Expansion port on the BCM50 Expansion Unit.
4 Disconnect the LAN cable from the LAN port on the BCM50 Expansion Unit.
5 Disconnect all of the telephone lines and extension cables from the MBM inserted in the
BCM50 Expansion Unit.
If there is more than one cable, mark the cables to identify the port from which they were
removed.
6 Rotate the power supply retention clip to free the power supply cord.
7 Remove the power supply cord from the BCM50 Expansion Unit.
Warning: Leakage currents
You must disconnect the telephony and data networking cables from the system
before disconnecting the power cord from a grounded outlet.
8 Continue with the next step,
Replace a BCM50 Expansion Unit
"Remove the BCM50 Expansion Unit" on page 197.