Daktronics AF-3400-133,171,216,260 - Manual (Page 19)

Electrical Installation
3-1
3: Section Electrical Installation
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 10: Ribbon
Cable Connector
Figure 10 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 both 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 one-half inch 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 11.
Figure 11: One Breaker
Termination Block