Daktronics AB-1600-1.5,2.5 - Manual (Page 47)

Maintenance & Troubleshooting
4-3
Figure 41 provides a general summary of the power routing of the 1600 series large matrix line
receiver displays. Neutral and ground wires are not illustrated. The illustration is for conceptual
purposes only.
For detailed power and signal information, refer to the appropriate general schematic in Appendix
B, or the project specific schematic in Appendix A, if one was included. Refer to Section 4.2 if
unsure which schematic to use.
Line Receiver Signal Summary
Signal routing for Venus 4600 systems starts at the controller computer. This computer, running
Venus 4600 software, sends data to the Venus A/B transmitter interface over serial cable. The
DB15 male -to-male cable connects to the A/B transmitter at J1.
The data is then sent to the serial line interface board within the display over fiber optic cable. The
cable runs from the J5 fiber transmit jack within the A/B interface to the J6 fiber input jack on the
serial line interface board. If a echo display is present, the data is shared with the displays by
running a fiber optic cable between J6 or J7 (TX) on the master display’s serial line interface to J8
(RX) on the echo display’s serial line interface.
Data Distributor Signal Summary
Refer to Section 3.9 for a detailed explanation of the data distributor signal summary.
Ventilation & Temperature Sensing Summary
Daktronics 1600 series large matrix displays depend on a ventilation system and internal
temperature sensing equipment to prevent and monitor heat buildup within the cabinet. Excessive
heat shortens the life of all electrical components, including lamps.
The three critical parts of the ventilation system are the filters, the fans and the lenses. On the
back of the cabinet are a number of air filters, and in front of each air filter, within the cabinet, is a
fan. The fans draw cooler air from outside the display through the filters and into the display. This
incoming air forces warm air already in the cabinet to exit through the lenses on the face of the
display. Each lens has an exhaust port near the top to allow for airflow. Before the air exists
through the lenses, it passes past the lamps, cooling them in the process. This maximizes the life of
the lamps.
Figure 41: Power Routing Example