Daktronics AF-3400-64-R,A - Manual (Page 33)

The driver is a circuit board responsible for switching the intensity levels of the
LEDs. One mounts on the back of each module. To remove a driver board:
1. Open the display as described in Section 4.4.
2. Disconnect all power and signal connections from the driver board.
3. Remove the one #6 nut holding the board in place.
4. Gently lift the board from the display.
5. Reverse the above procedure to install a new driver board.
Controller
Reference Drawings:
Controller, Galaxy, 8 conn., J1087............................... Drawing B-177838
The controller sends data to the modules. Refer to the signal summary in Section 4.2
for more information, and refer to the component location drawings for the position
of the controller board. Figure 22 and Drawing B-177838 illustrate a typical
controller.
Figure 22: Controller
The rotary switches set the hardware address, which the software uses to identify that
particular display. When replacing a controller board, be sure to set the rotary
switches in the same address configuration as the defective controller. Each
controller in a network needs a unique address.
Note: Setting the rotary switches to address 0 (set the switches to 0 by rotating them
counterclockwise until the arrow points to 0) can activate a test mode. The display's
power must be turned off and then turned back on to run the test mode.
Complete the following steps to remove the controller from the display:
1. Open the display as described in Section 4.4.
Maintenance and Troubleshooting
4-5