6
CEM3 Rack Retrofit Manual
Remove the Old CEM
1:
Disconnect the multi-colored DMX ribbon cable and Cat5 cable from the backplane.
2:
Disconnect the power cable from the rear of the CEM+ backplane.
3:
Disconnect the dimmer output ribbon cables from the backplane. As you remove the ribbon
cables, mark them with a permanent marker to indicate the proper order for reattachment
(Dimmers 1–24, 25–48, and so on). 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.
4:
Unscrew the backplane metal from the enclosure. (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.
5:
Push the backplane towards the back of the enclosure to free the backplane side tabs.
6:
Bend the sides in towards the center (out of the sides of the enclosure).
7:
Pull one side forward to angle the backplane then remove the backplane metalwork from the
enclosure. Discard the old backplane.
6
8
8
9
7
Remove the
backplane screws
