Daktronics Galaxy AF-3200 34 mm - Manual (Page 27)

7.2 Controller Diagnostics
The controller is the component that receives communication from the computer and
then sends data to the modules. Figure 18 below illustrates a typical controller.
Diagnostic LEDs are located at various places on the controller. The table following
the diagram details some essential LEDs to monitor and the information that each
LED provides. The LED name and number are noted in Figure 18.
Note that some LEDs, such as “Run” and “Receive signal”, have the same number.
This occurs because the controller includes two layers of circuit board which are not
easily shown in an illustration. Be sure to note the name as well as the number of the
LED when looking at the diagnostics chart.
Figure 18: Controller Component Layout
Diagnostics and Troubleshooting 7-2