Preparing Hardware For Maintenance Or Upgrades; Precautions - Nortel BCM200 Installation And Maintenance Manual

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 231
• "Special tools" on page 233
• "Performing a system shutdown" on page 233
• "Restarting the system after maintenance" on page 234
• "Base function tray maintenance procedures" on page 235
• "Advanced function tray maintenance procedures" on page 241
• "Removing and installing the main unit top cover" on page 246
• "Using the backup and restore utility" on page 250

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.
Chapter 20 Preparing hardware for maintenance or upgrades
BCM200/400 4.0 Installation and Maintenance Guide
231