Remove the old, N o t e – ETC Sensor+ Touring Rack CEM+ to CEM3 Retrofit User Manual

Page 8

CEM3 Sensor Touring Rack Retrofit Manual

Remove the Old

Step 1:

Unscrew the dimmer output edge connectors from the backplane metal.

Step 2:

Carefully feed the dimmer output ribbon cables through the backplane

individually. As you remove the ribbon cables, mark them with a permanent

marker them as illustrated above in the hexagons. There may be stickers on the

ribbon cables already, however these may refer to cable length and not dimmer

outputs. They should not be used as a reference to these instructions.

Step 3:

Examine each ribbon cable for any nicks or cuts due to backplane scrapes.

Step 4:

Unscrew and remove the control data cable connector (J3) from the backplane

and feed it back through the opening.

Step 5:

Unscrew the power edge connector (J1). Remove it from the backplane by

sliding it out of the notch and carefully pushing it through the backplane metal.

This connector will be used in the upgrade. If this connector is cracked or

damaged, contact ETC Technical Services for a new harness assembly.

Step 6:

Unscrew the backplane metal from the rack. (One screw in each side upper-

corner - two screws total.) Discard these screws. Replacement screws with

thread locker are provided (ETC Part# HW377) and will be used later.

Step 7:

Push the backplane towards the back of the rack to free the backplane side tabs.

Step 8:

Bend the sides in towards the center (out of the sides of the rack).

Step 9:

Slide the backplane metal forward in order to allow easier working space while

removing the data terminations

Step 10: Pull one side forward to angle the backplane then remove the backplane

metalwork from the rack. Discard the old backplane.

N o t e :

The order/layout of the dimmer output edge connectors is different on the CEM3

backplane.

1 2 3 4 5 6 7 8 9 10 11 12 13 14

CEM SP96 Ribbon Cable Layout

(1-24)

(73-96)

(49-72)

(25-48)

(1-24)

CEM SP48 Ribbon Cable Layout

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Remove the

backplane screws