Daktronics AF-3165-34-RGB - Manual (Page 44)

Maintenance and Troubleshooting 4-2
4.2 Signal Summary
The signal routing for the display can be summarized as follows:
1. Data from the control computer, running 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 20-conductor ribbon cables
from the controller (J11 through J16 provide signal out) to J2 on the module
of the first column of modules in the display
4. Data exits at J1 and is relayed to J2 of the next module and so on, traveling
down the entire row of modules. This display data is used to control the
LEDs
4.3 Power Summary
Reference Drawing:
Schematic .................................................................Refer to Appendix A
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. The transformer steps down the power to
approximately 10 VAC
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. See your
display Schematic for power supply wiring information