Daktronics AF-3090-89-R,A - Manual (Page 16)

Electrical Installation
3-1
Section 3: Electrical Installation
Only a qualified individual should terminate power and signal cable within this Daktronics sign!
The Daktronics engineering staff must approve ANY changes made to the sign. Before altering the
sign, 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 Sign
The power and signal connections in the signs 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 sign installation and maintenance.
1. Ribbon Cable Connectors:
Figure 9 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 J contact
cleaner to remove any foreign matter that may cause signal problems. In
addition, apply a generous amount of CaiLube
J protector paste to the plug
before inserting it into the jack. This paste protects both the plug and the jack
from corrosion.
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 9: Ribbon
Cable Connector
Figure 10: Termination
Block
Figure 11: Phoenix
Connector