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Installation and Maintenance Guide
Chapter 9
Replace or Upgrade a Power Supply
The BCM200 uses a standard power supply. The BCM400 and expansion units use either a
standard or redundant power supply.
This chapter describes the following power supply installation and replacement techniques:
• replace a standard power supply
• upgrade from a standard power supply to a redundant power supply (BCM400 only)
• install or replace the power supply modules in a redundant power supply system
• cable routing and mangement
• how to maintain the power supply
Note: For the BCM400 RFO configuration only, a redundant power supply is included.
Use a redundant fan with the redundant power supply (see “Install a BCM400 cooling fan”
on page 182).
Warning: You must remove all of the connections to the Business Communications
Manager before you power the system down.
Failure to disconnect lines before power down can cause damage to the system.
Warning: Protect the hardware components against damage from electrostatic discharge.
Always wear a ground wrist strap before you handle components. Always place the
components in static-free container.