Daktronics Galaxy AF-3165, Manual

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Maintenance and Troubleshooting
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4.2 Signal Summary
Reference Drawings:
System Riser Diagram, RS422................................... Drawing A-174135
System Riser Diagram, RS232................................... Drawing A-174341
System Riser Diagram, Modem.................................. Drawing A-174342
System Riser Diagram Fiber ...................................... Drawing A-174344
Signal Input, Venus 1500 ........................................... Drawing A-175387
System Riser, QC Outdoor Radio .............................. Drawing A-177006
Schematic .............................................................. Refer to Appendix B
The signal routing for the display can be summarized as follows:
1. Data from the control computer, which runs Venus 1500 software, travels via RS232, RS422,
modem, fiber optic cable or Radio signal into the display.
2. For multiple face displays or a display network, an RS422 (most typical) or fiber cable relays
signal between the controller of the first display and the controller in the second display.
3. From the controller, the signal then travels over a 40-conductor ribbon cable from the
controller (J11 through J16 provide signal out) to J2 on the driver of the first column of
modules in the display.
4. Data exits at J1 and is relayed to J2 of the next driver board and so on, traveling down the
entire row of modules. The drivers use this display data to control the LEDs.
4.3 Power Summary
Reference Drawing:
Schematic .............................................................. Refer to Appendix B
The power routing for the display can be summarized as follows:
1. Incoming power terminates at the power termination enclosure. Before leaving the enclosure,
power is sent through a circuit breaker and an RFI electrical filter.
2. Power for the controller board passes through a transformer located on the controller/power
panel.
3. Both +6.5VDC and +9VDC power supplies are used to power the modules. Power supplies
are preset. Contact Daktronics Customer Service for the proper settings.
4. In Galaxy displays, the 9VDC power supply powers the green and blue LEDs through the 4-
pin connector. The 6.5VDC power supply powers the red LEDs and driver’s logic circuit
through 2-pin connectors.