Nortel Networks BCM200, 400 4.0 manual Preparing hardware for maintenance or upgrades, Precautions

Chapter 20 Preparing hardware for maintenance or upgrades 229

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 229

•“Special tools” on page 231

•“Performing a system shutdown” on page 231

•“Restarting the system after maintenance” on page 232

•“Base function tray maintenance procedures” on page 233

•“Advanced function tray maintenance procedures” on page 239

•“Removing and installing the main unit top cover” on page 244

•“Using the backup and restore utility” on page 248

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.

BCM200/400 4.0 Installation and Maintenance Guide