Johnson Systems CD-3000 Series Retrofit Control System User Manual
Page 5
5
• Unscrew the two mounting (thumb) screws that hold the old processor
housing in place. Slowly remove the old card cage, taking care not to
strain or disconnect any of the original CD-80
®
wiring. Carefully observe
and label as necessary all wiring as to its location and polarity.
• If you are not familiar with the Strand CD-80
®
dimmer rack processor
electronics and wiring, it is strongly advised that you take a few minutes
to look at the back of the processor housing connections and compare it
to the backplane on the CD-3000-AE. Do not disconnect any wiring until
you are satisfied with how easy this is going to be.
NOTE: Never pull directly on the wires to remove connectors.
• Disconnect the power connector. This connector is a 9-position CPC
(Circular Plastic Connector) plug (female - cable mount) and receptacle
(male - chassis mount). It is black in color and approximately two (2)
inches in length. It is located at the lower (rear) right-hand side of
the old processor housing. Turn the locking ring counterclockwise to
disconnect.
• Disconnect the four (4) 27-conductor control output cables. Do not pull
on the wire to disconnect. Carefully apply pressure to the connector
itself with either your fingers or preferably a small flat head screwdriver.
Do not mix up the cable order or polarity.
• Disconnect the smaller 10-conductor connector. This connector and
cable is not required on the CD-3000 retrofit and should be coiled up
and wire-tied. Carefully set it aside inside the rack and keep it isolated
from any AC line voltage.
• The old processor housing can now be set aside.
Installation of the new CD-3000-AE System
• Remove your new CD-3000-AE system from the box. Leave the foam
end caps in place to protect the unit from damage.
• Familiarize yourself with the backplane, and low voltage control input/
output connections. Refer to page 12 for details.
• Dress out all DMX and other low voltage connections to the backplane
using the breakaway connectors provided. Be sure to isolate and protect
all shield wires.
• Place the CD-3000-AE in front of the rack face down / backplane up.
Leave the foam end caps left in place to protect the unit from
damage.
• Connect the four (4) 27-conductor control output cables to the
backplane in the same order and polarity in which they were
removed. Extra care should be taken not to bend or break any
of the connector/header pins. Damage to these pins may require
replacement of the entire CD-3000 assembly and will not be considered
warranty! Refer to page 10 for the connector pinout.
• Connect all other applicable low voltage control input/output connections
to the backplane.
• Connect the 9-position CPC power connector. The connector is
keyed, so the plug and receptacle must be aligned to mate properly.
Once aligned, turn the locking ring clockwise until a “click” is heard and
felt indicating that the connector is fully seated. Refer to page 10 for the
connector pinout.