Daktronics Galaxy AF-3190 Series, Display Manual

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4.2 Recommended Tools List
When performing maintenance work on your display, Daktronics recommends using
the following tools and placing them in a convenient, easy-access location.
7/32" Nut Driver to open the modules in front access displays.
3/16” Nut Driver to remove hardware from signal communication boards.
7/16" Wrench removes support hardware for power supplies.
#2 Phillips Screwdriver removes support hardware for power supplies and
detaches power supplies.
4.3 Signal Summary
Reference Drawings:
Schematic, AF-3197-8-48x32x***-89, RGB................. Drawing A-184111
The signal routing for the display can be summarized as follows:
1. Data from the controller computer, which runs Venus
®
1500 software,
travels via RS232, RS422, modem, fiber optic cable, radio, or Ethernet 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.
Note: The RS422 interconnection is not
allowed when the input to the first display is Ethernet.
3. From the controller, the signal then travels over 20-conductor ribbon cables
from the controller (J11 through J16 provides signal out) to J2 on the driver
of the first column of modules in the display.
4. Data exists 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. See
Drawing A-184111 for further information.
Figure 37: AF-3197 Signal Flow Diagram
Maintenance and Troubleshooting
4-2