AT&T MERLIN LEGEND Installation & Maintenance Manual page 113

Installation
Follow these steps to install the power supply modules:
1. Make sure all power to the CU is turned off.
Set the power switch on the power supply modules to OFF.
2.
Install the ring generator on any power supply module
3.
providing power to a 012 basic telephone or 008 OPT
module. (See "Install a Ring Generator in the Power Supply
Module" in this chapter.)
Note: Place all 012 and 008 OPT modules in one carrier
whenever possible.
4. Add a copper-foil shield to any power supply module that is
to be installed in an expansion carrier. (See "Add a Foil Shield
to the Power Supply Module" in this chapter.)
5. Install a power supply module in the left-most slot of each
carrier.
a. Lower the module hook onto the rod.
b. Be sure the connector on the module mates properly with
the connector on the carrier.
c. Push the module into the carrier until it locks into place.
6. Connect one end of the AC power cord to the connector
marked AC INPUT on the power supply module.
CAUTION:
Do not plug the power cord into the outlet now.
Install a Ring Generator in the Power Supply Module
A ring generator provides the ringing capability for basic
telephones such as single-line telephones. Figure 16 shows the
proper placement of the ring generator in the power supply
module.
The Control Unit 3-5