Daktronics Galaxy AF-3400 Series, Display Manual, Page: 25 / 93

Electrical Installation
3-1
ion Section 3: Electrical Installat
Only a qualified individual should terminate power and signal cable at 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:
Ribbon Cable Connectors:
Figure 8: Ribbon
Cable Connector
Figure 8 illustrates a typical 20-pin 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 CalLube
™
protector paste to the plug before inserting it into the jack. This paste
will protect the plug and the jack from corrosion.
Termination Blocks:
Termination blocks are commonly 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 1/2" of insulation
stripped from the end of the wire prior to termination. Insert stripped
wires into terminations and make sure the clamp holds the wire
firmly. Refer to
Figure 9 and Figure 17 for more information.
Figure 9: One Breaker
Termination Block