Daktronics AF-3400-64-R,A - Manual (Page 30)

3. From the quick connect input board, the signal is transferred to the display’s
controller via a 20-conductor ribbon cable.
4. From the controller, the signal then travels over 20-conductor ribbon cables
from the controller (J11 through J18 provides signal out) to J2 on the driver
of the first row of modules in the display.
5. The data exists at J1 and is then 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.
6. From the first display controller, signal can also be transferred to another
display controller in a second display.
7. Refer to Figure 18 for the signal summary in a primary display.
Figure 18: Primary Display Signal Summary
4.3 Power Summary
The following describes the internal display power routing for the display:
1. Incoming power terminates at the panel board.
2. +12.5VDC power supplies power to the modules in both the monochrome
red and amber displays.
Maintenance and Troubleshooting 4-2