Daktronics Galaxy AF-3165, Manual

Page: 15 / 85

Electrical Installation 11
Section 3: Electrical Installation
Only a qualified individual should terminate 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 the warranty will be rendered 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 so 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 display installation and maintenance.
1. Ribbon Cable Connectors:
Figure 8 on the right illustrates a typical ribbon connector. To
disconnect the ribbon cable, push the metal 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
will protect both the plug and the jack from corrosion.
2.
Termination Blocks:
Termination blocks are usually used to connect internal power and
signal wires to wires of the same type coming into the display from an
external source. 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
9 on the right.
3.
Phoenix

-Style Connectors:
Phoenix-style connectors, which are usually green, are often used
for signal termination on circuit boards. Refer to
Figure 10 on the
right. Strip one-quarter inch of insulation from the wire prior to
termination. To remove a wire, turn the above screw counter-
clockwise to loose 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 8: Ribbon
Cable Connector
Figure 9: Termination
Block
Figure 10: Phoenix
Connector