AT&T MERLIN LEGEND Installation & Maintenance Manual page 111

Installation
Note: Put on all four housing clips if the system has only one
carrier. Put on the housing clips only on the left side of the
basic carrier if an expansion carrier is to be added.
Position the carrier on the screws and slide the carrier to the
6.
left.
Check to see that the carrier is level and that the housing
7.
clips extend as far as possible from the sides of the carrier.
Tighten the screws.
Install the Expansion Carrier
Follow these steps to mount the expansion carrier to the
backboard and connect it to the basic carrier or to an existing
expansion carrier (see Figure 15).
1. Locate the breakaway plastic tab on the right side of the
already mounted carrier. Using a flat-blade screwdriver,
gently pry the tab open to expose the card extenders and
connectors on the carriers.
Align the connector of the expansion carrier with the card
2.
extender on the already mounted carrier and slide the
connector onto the extender.
Mark the screw hole locations on the backboard by using the
3.
expansion carrier as a guide. Make sure the carrier is level
before marking the holes.
4. Disconnect the connector on the expansion carrier from the
card extender on the already mounted carrier and lay the
expansion carrier to the side.
5. Drill a pilot hole in the center of each of the four marked
mounting-hole locations.
6. Anchor the screws approximately halfway into the backboard.
7. Place the control unit housing clips around the right-hand
molding for the screws on the back of the last carrier.
The Control Unit 3-3