Nortel Networks BCM200/400 - Manual (Page 237)

Chapter 20 Preparing hardware for maintenance or upgrades 237
BCM200/400 4.0 Installation and Maintenance Guide
Chapter 20
Preparing hardware for maintenance or upgrades
This chapter describes how to prepare the BCM system for maintenance activities. The following
primary topics are covered in this chapter:
• “Precautions” on page 237
• “Special tools” on page 239
• “Performing a system shutdown” on page 239
• “Restarting the system after maintenance” on page 240
• “Base function tray maintenance procedures” on page 241
• “Advanced function tray maintenance procedures” on page 247
• “Removing and installing the main unit top cover” on page 252
• “Using the backup and restore utility” on page 256
Precautions
Before you replace or update any hardware on the BCM system, disconnect the system from the
trunk lines.
Remove the top cover to access the standard power supply, I/O card, or backplane components.
For fan, hard disk, or power supply maintenance, remove the appropriate chassis panels. Remove
the base function tray to replace any PCI cards. Remove the advanced function tray from the
BCM400 main unit to replace or upgrade the hard disk. If applicable, remove the main unit from
the server rack.
Observe the following precautions when working inside the BCM system. Maintain a clean and
static-safe site.
Danger: Electrical shock warning
Disconnect the power cord, telephone cables, and network cables before opening the BCM
main unit. Read and follow installation instructions carefully.
Danger: Electrical shock warning
Partially remove the power supply module from the power supply cage. Do not completely
remove the power supply module. IMPORTANT: Wait several seconds before removing
the power supply module completely from the power supply cage to ensure complete
electrical discharge.
Caution: Use only a Nortel-approved replacement. Contact your account representative
for the current list of approved replacement parts.