Nortel Networks BCM50 - Manual (Page 190)

190 Chapter 24 Replacing an internal component
NN40020-302
For information about replacing an internal component:
• Preparing the system for maintenance on page 190
• Removing the main unit on page 190
• Opening the main unit case on page 190
• Removing an internal component on page 192
• Inserting the new component on page 195
• Closing the main unit case on page 200
• Installing the main unit on page 201
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
Preparing the system for maintenance
If the system is still operating, perform the procedure To shut down the system on page 170.
After the system shuts down, perform the procedure To disconnect the cables on page 176.
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 BCM50 main unit:
• To remove a rack-mounted main unit on page 177
• To remove a wall-mounted main unit on page 177
• To remove a desktop mounted main unit on page 177
Opening the main unit case
This procedure is based on the assumption that you intend to perform maintenance activities. Do
not operate the main unit with the cover removed.
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.