Daktronics AF-3112-34-R,A - Manual (Page 4)

List Of Figures ii
RS422 Interconnection ..................................................................... 3-16
3.9 First Time Operation................................................................................ 3-16
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............................................................................................ 4-5
Modules and Drivers .......................................................................... 4-7
Power Supplies ................................................................................... 4-8
Light Detector..................................................................................... 4-8
Modem................................................................................................ 4-8
Fiber Board......................................................................................... 4-9
RS422 Surge Suppressor .................................................................. 4-10
4.5 Ventilation Systems (With Fans and Filters) ........................................... 4-10
4.6 Thermostats ............................................................................................. 4-11
4.7 Weather Stripping .................................................................................... 4-11
4.8 Display Maintenance ............................................................................... 4-11
4.9 Troubleshooting....................................................................................... 4-12
4.10 Initialization Operation Information ........................................................ 4-13
4.11 Replacement Parts List ............................................................................ 4-13
4.12 Daktronics Exchange and Repair and Return Programs .......................... 4-14
Appendix A: Reference Drawings .....................................................................A-1
Appendix B: Signal Converter ...........................................................................B-1
Appendix C: Temperature Sensor .....................................................................C-1