Daktronics Galaxy Series, Manual

Page: 44 / 90

Modules and Drivers
Reference Drawings:
Comp. Layout Diagrams.......................................... Refer to Appendix A
The module and driver board are a single functional unit. To remove a module,
complete the following steps:
1. Locate the latch access fasteners on the module. One is centered below the
top row of pixels and one is centered
above the bottom row.
Maintenance and Troubleshooting
4-8
2. With a 1/8"Allen wrench, turn the latch
access fasteners a quarter turn as seen in
Figure 37
on the right. The top one
should be turned clockwise and the
bottom one counter-clockwise.
3. Pull the display module far enough to
reach around the back and disconnect the
ribbon cables and power cable.
When installing a module, reverse the previous
steps and take note of the following points:
•
The weather-stripping on the back edge
of the module must be intact and in good
condition if it is to prevent water from
seeping into the display.
•
The module latches must be fully
engaged to create a watertight seal around the edge of the module. The
module should be firmly seated against the display when the latches are
fully engaged.
Figure 37: Removing a Module
Each module assembly is made up of a module housing (containing LEDs and the
driver) and a louver assembly.
Power Supplies
Reference Drawings:
Schematics .............................................................. Refer to Appendix A
Comp. Layout Diagram............................................. Refer to Appendix A
The LED power supplies are identified as assemblies in the
Component Layout
Diagrams .
The LED power supplies are identified as assemblies.
•
In displays with 3 LEDs per pixel, each power supply unit controls eight
modules.
•
In displays with 4 LEDs per pixel, each power supply unit controls four
modules; a power supply assembly (two power supply units) controls eight.
•
In RG or tri-color displays, each set of power supplies control eight
modules.