Daktronics AF-3150-20-R,A - Manual (Page 42)

Transformer and RFI Filter
Remember: Disconnect power before servicing any internal components.
Figure 36: Power Termination Box
Maintenance and Troubleshooting 4-4
f Trans ormer
The transformer is located in the upper portion of the power termination box. Turn
off power to the display before removing the wires.
To replace the transformer:
1. Disconnect and label all the wires attached to it.
2. Release the hardware securing it to the inside of the enclosure.
3. Position the new transformer in its place, and tighten it down.
4. Re-connect all the wires using the display’s Schematic as a reference.
RFI Filter
The RFI electrical filters are mounted above and to the side of the power termination
box (Z1 and Z2 in Drawing A-129227).
To replace the RFI filter:
1. Remove all connecting wires.
2. Releasing the attachment hardware.
3. Replace the filter.
4. Install the new filter using the display’s Schematic as a wiring reference.