Daktronics AF-3080-68-R,A - Manual (Page 48)

The connectors out to the display boards connect to the display boards in the
following manner:
Connector Display board Coordinates
J1 Top Row, Column 1
J2 Top Row, Column 2
J6 Bottom Row, Column 1
J7 Bottom Row, Column 2
Controller
The controller sends data to the modules. The controller is located in the bottom left
hand corner, when viewed from the front of the display. Refer to the signal summary
in Section 4.3 for more information and to the component location drawings for
the exact location of the controller board. Figure 37 below illustrates a typical
controller.
Figure 37:Controller
To replace a controller board:
1. Disconnect the power and signal connections (refer to Figure 37 above for
disconnection of power). Note: It is recommended to label the cables to
ensure they are reconnected at the right locations.
2. The controller board is held in place with six 3/16" screws. Carefully
remove them.
3. Install the new controller board, replace the screws and reconnect power
and signal cables.
4. When replacing a controller board, be sure to set the DIP switches in the
same address configuration as the defective controller. The “DIP” switches
are located on the controller’s MDC. The DIP switches set the hardware
address, which the software uses to identify that particular display.
5. If this display contains a modem, the jumpers (W1 and W2) need to be set
for use with a modem system. The jumpers must jump both pins for a
modem system.
Maintenance and Troubleshooting 4-6