Electrical Installation
3-1
3:
Section
Electrical Installation
Only a qualified individual should terminate power within this Daktronics display or
signal to the signal enclosure
.
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.
Figure 9: Ribbon
Cable Connector
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:
on the right
illustrates a typical ribbon connector. To
disconnect the ribbon cable, push the plastic clips on the sides
out 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.
Figure 10: Termination
Block
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
on
the right.
