Daktronics GPR-12EV-RGB - Manual (Page 43)

Parts Replacement 37
Power Supply Replacement
Power supplies, shown in Figure 36, in GalaxyPro ® Revolution displays handle a range of
power from 120 to 240 volts. The power supply contains a power distribution board on one
edge that receives AC power and then supplies DC power to modules and other internal
components. Each module is connected to a jack on the power distribution board by an
individual power cable. When replacing a power supply, note which one or two modules are
connected to each jack.
Tool required: Phillips
screwdriver
1. Turn off power
to the display.
2. Remove the
module directly
in front of the
appropriate
power supply.
3. Disconnect the
connectors from
the power
source as well as
those going to
the modules,
noting the jack
numbers going
to each module.
Also, unplug the
ISAC fan
control.
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 plugs so that each module receives power and plug the ISAC fan
control back in. Refer to the appropriate Layout Drawing for module connections, if
needed.
Figure 36: Power Supply