Daktronics Galaxy AF-3400 34 mm Monochrome/RGB - Manual (Page 52)

Light Sensor Replacement
The light sensor assembly is mounted inside the top left of the cabinet. Refer to Figure 31 for
location. The entire assembly fits over two screws.
If the light sensor should fail, only the circuit board needs to be replaced (Figure 42). Remove
the top left module on the display to access the light sensor. To replace a light sensor circuit
board, follow these steps.
Note: The hardware mentioned in each step is given a corresponding number in the drawing.
For instance, the nuts mentioned in step 2 are labeled #2 in the figure.
1.
Remove the nuts behind the circuit board plate, and then remove the plate and
circuit board from the assembly.
2.
Remove the nuts securing the circuit board to the plate.
3. Remove the standoffs and attachment screws from the board.
4.
Disconnect the four electrical wires on the sensor by unscrewing each screw that
holds a wire in place. Note the order that the wires are connected.
5.
The light sensor plug on the controller does not need to be detached.
6. Reattach the new circuit board, following these steps in reverse.
Note: Align the new circuit board so that the lens lines up with the 1/2" circular opening in
the top edge of the display when the assembly is in place.
Figure 42: Light Sensor Assembly
Parts Replacement 44