AT&T 3.0 manual Installing the Power Supply

Installing the Power Supply

Installing the Power Supply

WARNING:

Do not attach any cab/es or power cords to the power supply until it is installed in the carrier.

Do not power up the control unit until all of the modules and power equipment are installed. Once they are installed, refer to “Powering Up the System, ” later in this chapter. Failure to comply with this procedure can result in shock hazard and or damage to the equipment.

If you are upgrading an older system and a ring generator is specified in the system forms (Control Unit Diagram), install it in the power supply before putting the power supply in the carrier. The procedure is detailed in Maintenance and Troubleshooting.

For expansion carriers only, a copper shield must be installed on the power supply before installing it in the carrier. The procedure is explained in “Installing a Copper Shield,” later in this chapter.

Before touching leads, connectors, pins, and other components, use a properly grounded wrist strap, to prevent damage from electrostatic discharge (ESD).

Remove the protective cover from the gold-finger connector (on the back of the power supply) before inserting it into the carrier.

Installing the power supply can involve as many as four procedures, depending on the system configuration. The procedures are:

■Turning off all power to the control unit

■Installing a copper shield

■Installing the ferrite cores

Installing the Control Unit 2-19