Daktronics Galaxy AF-3400 34 mm Monochrome/RGB - Manual (Page 51)

Power Supply Replacement
The modules in a display rely on power supplies that receive 120 VAC from the power
termination panel and send out DC power to the modules. Power supply voltage differs
depending on the LED color of the display.
• Monochrome Red: Each 6.5 VDC power supply provides power for up to eight modules
in a display that uses monochrome red LEDs.
• Monochrome Amber and RGB: Each 9 VDC power supply provides power for up to
eight amber LED modules and up to four RGB modules.
Power supplies may be installed as single or double units depending on the pixel size of the
display. A double unit consists of two single units connected together. The wiring for a single
unit power supply is shown in Figure 41.
Tools required: 5/32” hex wrench, Phillips screwdriver
Complete the following steps to replace a power supply:
1.
Turn off power to the display.
2.
Access the interior of the display by removing the module in front of the power supply to
be replaced. Use a 1/8” hex wrench to turn the latch fasteners. Refer to Section 6.1 for
additional instructions.
3.
Disconnect and label all the wires connected to the power supply.
4.
Remove the hardware holding the power supply in place.
5.
Follow these steps in reverse order to install a new power supply.
Figure 41: Single Unit Power Supply
Parts Replacement 43