Daktronics Galaxy AF-3190 Series, Display Manual

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Section 3: Electrical Installation
Only a qualified individual should terminate the power and signal cable within this Daktronics
display.
The Daktronics engineering staff must approve any changes made to the display. Before
altering the display, submit detailed drawings for the proposed modifications to the
Daktronics engineering staff for evaluation and approval or you will render the warranty null
and void.
3.1 Common Connectors in the Display
The power and signal connections in the displays use many different
types of connectors. Take special care when disengaging any connector,
as not to damage the connector, the cable, or the circuit board. When
pulling a connector plug from a jack,
do not pull on the wire or cable;
pull on the jack itself. Pulling on the wires may damage the connector.
The following information presents some common connectors
encountered during sign installation and maintenance:
Figure 9: Ribbon
Cable Connector
1. Ribbon Cable Connectors:
Figure 9
illustrates a typical ribbon connector. To disconnect the
ribbon cable, push the plastic clips on the sides to unlock and
remove the jack.
Before replacing a ribbon cable connector, spray it with DeoxIT
™
contact cleaner to remove any foreign matter that may cause signal
problems. In addition, apply a generous amount of CaiLube
™
protector paste to the plug before inserting it into the jack. This
paste protects both the plug and the jack from corrosion.
Figure 10: Termination
Block
2. Termination Blocks:
Termination blocks connect internal power and signal wires to
wires of the same type coming into the sign from an external
source. Most signal wires come with forked connectors crimped to
the ends of the wire. Power wires need to have one-half inch of
insulation stripped from the end of the wire prior to termination.
Tighten all screws firmly to ensure a good electrical connection.
Refer to
Figure 10 .
3. Phoenix
™
-Style Connectors:
Phoenix-style connectors, usually green, allow for signal
termination on circuit boards. Refer to
Figure 11
. Strip one-quarter
inch of insulation from the wire prior to termination. To remove a
wire, turn the above screw counter-clockwise to loosen the
connectors grip on the wire. To insert a wire, push the bare wire into the
connector and turn the above screw clockwise to lock the wire into place.
Figure 11: Phoenix
Connector
Electrical Installation
3-1