Daktronics AF-3700-20 RGB - Manual (Page 50)

Power Supply Replacement
Power supplies in GalaxyPro displays come in two basic types. Displays that are 16 pixels
high use 600-watt power supplies that will each run up to six modules. All other displays use
1,000-watt power supplies. These run up to 12 modules each.
Figure 53: Jacks and Fuses
on RGB Power Supply
The power supply contains a power distribution board on one edge
that receives 120 VAC or 240 VAC power and then supplies DC
power to the modules. Each module is connected to a jack on the
power distribution board by a Mate-n-Lok cable. Refer to Figure 54.
The fuses on the power distribution board are 32 volt 15 amp
automotive fuses. Each jack has a corresponding fuse just above it.
Refer to Figure 53.
Complete the following steps to replace a power supply:
Tool required: Phillips screwdriver
1. Turn off power to the display.
2. Remove the module directly in front of the appropriate power supply. Refer to the
Layout Drawings in Appendix A for exact location.
3. Disconnect the Mate-n-Lok ® connectors from the power source as well as those going to
the modules.
4. Loosen the screw holding the power supply bracket to the cabinet upright and lift it off
the hooks.
5. Carefully pull the power supply out of the cabinet.
6. Move the new power supply into place and tighten the screw on the support bracket.
7. Reconnect all the Mate-n-Lok
® plugs so that each module will receive power.
Figure 54: Power Supply with Power Distribution Board
Parts Replacement 40