ii Table of ContentsSection 6: TNMC & Electronic Caption Troubleshooting & Maintenance ................................. 376.1 Display Overview ................................................................................................................. 376.2 Initialization Information at Startup ................................................................................... 386.3 Display Troubleshooting Table ........................................................................................... 386.4 Power & Signal Summary .................................................................................................... 396.5 Component Locations & Access .......................................................................................... 40For Displays Built Before September 2009 .................................................................. 41Front Access .................................................................................................................... 41Rear Access ..................................................................................................................... 426.6 Display Drivers ...................................................................................................................... 42For Displays Built Before September 2009 .................................................................. 43Diagnostic LEDs ............................................................................................................. 44Replacing a Driver ......................................................................................................... 446.7 Modules .................................................................................................................................. 44Replacing Modules ........................................................................................................ 44Weather-stripping .......................................................................................................... 456.8 Power Supplies ...................................................................................................................... 46Replacing a Power Supply ............................................................................................ 466.9 Display Maintenance ............................................................................................................ 466.10 Replacement Parts List ......................................................................................................... 47For Displays Built Before September 2009 .................................................................. 48Section 7: Daktronics Exchange and Repair & Return Programs .................................................. 497.1 Exchange Program ................................................................................................................ 49Before Contacting Daktronics ....................................................................................... 497.2 Repair & Return Program .................................................................................................... 50Shipping Address........................................................................................................... 507.3 Daktronics Warranty and Limitation of Liability ............................................................. 50Section 8: Scoreboard Options ............................................................................................................. 518.1 Trumpet Horns ...................................................................................................................... 518.2 Radio Control ......................................................................................................................... 518.3 Time Outs Left (T.O.L) Digits .............................................................................................. 528.4 Changeable Caption Kits ...................................................................................................... 52Appendix A: Reference Drawings ............................................................................................................ 53Appendix B: Daktronics Warranty and Limitation of Liability .......................................................... 55