Daktronics AF-3165-34-RGB - Manual (Page 46)

Transformer and RFI Filter
Reference Drawings:
Power Termination Box, AF-3X65, 8-Pos ................... Drawing A-154965
Power Termination Box 2-Pos..................................... Drawing A-175131
Schematic .................................................................Refer to Appendix A
Remember: Disconnect power before servicing any internal components.
Maintenance and Troubleshooting 4-4
f Trans ormer
The transformer is located in the upper portion of the power termination box. To
replace the transformer, first disconnect and label all the wires attached to it. Turn
off power to the display before removing the wires. Then release the hardware
securing it to the inside of the enclosure. Position the new transformer in its place,
and tighten it down. Re-connect all the wires using the display’s Schematic as a
reference.
If one power line is terminated (120VAC), the black “hot” wire will be connected to
line one and a jumper will be installed per note one on Drawing A-154965. If two
power lines are terminated (120/240VAC), the second “hot” wire will be connected
to L2 and no jumper will be installed.
The ground wire will be connected to the ground bus or ground lug.
Figure 34: Power Termination Panel
RFI Filter
The RFI electrical filters are mounted above and to the side of the power termination
box (Z1 and Z2 in Drawing A-175131). Like the transformer, the filters can be
replaced by first removing all connecting wires, then releasing the attachment
hardware. Install the new filter using the display’s Schematic as a wiring reference.