AT&T Release 2.0 manual Installing a Ring Generator

Installing the Control Unit

Step 2a: Installing a Ring Generator

If a ring generator (the 129B frequency generator) is indicated on the Control Unit Diagram it must be installed in the power supply before installing the power supply into the carrier.

NOTE:

■This procedure is part of a larger procedure for installing the power supply. If you have not already read the beginning of this section, “Installing the Power Supply,” do so before continuing.

■If you are replacing a ring generator, skip to the next section, “Step 2b: Replacing a Ring Generator.”

WARNING:

Hazardous electrical voltages may be present if the following steps are not performed correctly.

Follow these steps to install a ring generator (see Figure 2-9throughout this procedure):

a.Make sure each power supply is turned off, including the module in the control unit and any auxiliary power units.

b.Unplug the power supply cord from the AC outlet (or from the auxiliary power unit) and then from the power supply.

NOTE:

At this point, all cords should be removed from the power supply.

c.Remove the power supply from the carrier.

d.Place the power supply on its left side and remove the five screws.

2-30Installing the Power Supply