Daktronics Galaxy AF-3155, Manual, Page: 4 / 87

Table of Contents
ii
3.8 Signal Termination Between Two (or More) Signs................................. 3-19
RS422 Interconnection ..................................................................... 3-19
Fiber Interconnection........................................................................ 3-20
3.9 Optional Temperature Sensor Electrical Installation ............................... 3-20
3.10 First Time Operation................................................................................ 3-21
Section 4: Maintenance and Troubleshooting ............................................. 4-1
4.1 Maintenance and Troubleshooting Overview ............................................ 4-1
4.2 Signal Summary......................................................................................... 4-2
4.3 Power Summary......................................................................................... 4-2
4.4 Service and Diagnostics............................................................................. 4-3
Transformer and RFI Filter................................................................. 4-4
Controller............................................................................................ 4-4
Modules and Drivers .......................................................................... 4-7
Power Supplies ................................................................................... 4-8
Light Detector..................................................................................... 4-9
Modem................................................................................................ 4-9
Fiber Board....................................................................................... 4-10
RS422 Surge Suppressor .................................................................. 4-11
Location of CAN termination Jumper .............................................. 4-12
4.5 Ventilation Systems (With Fans and Filters) ........................................... 4-13
4.6 Thermostats ............................................................................................. 4-14
4.7 Weather Stripping.................................................................................... 4-14
4.8 Display Maintenance ............................................................................... 4-14
4.9 Troubleshooting....................................................................................... 4-15
4.10 Initial Operation Information................................................................... 4-16
4.11 Replacement Parts List ............................................................................ 4-17
4.12 Daktronics Exchange and Repair and Return Programs .......................... 4-18
Appendix A: Reference Drawings .....................................................................A-1
Appendix B: Signal Converter ...........................................................................B-1
Appendix C: Optional Temperature Sensor .........................................................C-1