Daktronics Galaxy AF-3200 34 mm - Manual (Page 38)

Power Supply Replacement
The modules in a display rely on power supplies that receive 120VAC 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
five modules in a display. The assembly 0A-1327-0004 contains two power
supplies, and the assembly 0A-1327-0003 only one.
• Monochrome Amber: Each 9 VDC power supply provides power for up to
five amber LED modules. The assembly 0A-1327-0010 contains two power
supplies and the assembly 0A-1327-0009 only one.
Power supplies may be installed as single or double units depending on the pixel
matrix 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 26.
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 opening the face panel. Refer to
Section 6.1 for instructions.
3. Disconnect and label all the wires connected to the power supply.
4. The power supply is mounted to a metal plate. Remove the nuts holding the
metal plate to the display back.
5. Remove the screws holding the power supply to the mounting plate.
6. Install a new power supply on the mounting plate and replace the nuts that
hold the mounting plate to the display back.
7. Reattach the wires to the power supply as shown in Figure 26.
Figure 26: Single-unit Power Supply
Parts Replacement 8-5