Daktronics Galaxy AF-3500/3550 - Manual (Page 4)

ii Table of Contents
Dry Cleaning Process ................................................................................................................................. 20
6.5 Annual Inspection .............................................................................................................................................. 20
Section 7: Diagnostics and Troubleshooting .................................................................................................... 21
7.1 Controller Diagnostics ....................................................................................................................................... 21
7.2 MLC Diagnostics ................................................................................................................................................ 21
7.3 Troubleshooting Display Problems ................................................................................................................ 22
Common Misconceptions .......................................................................................................................... 22
Module and LED Problems ....................................................................................................................... 22
Brightness Problems ................................................................................................................................... 23
Message Problems ....................................................................................................................................... 23
Temperature Problems ............................................................................................................................... 24
Temperature Problems ............................................................................................................................... 24
Testing Displays .......................................................................................................................................... 24
Before Calling For Help ............................................................................................................................. 24
Section 8: Parts Replacement ............................................................................................................................ 25
8.1 About Replacement Parts .................................................................................................................................. 25
8.2 Instructions for Replacing Parts ....................................................................................................................... 25
Controller Replacement ............................................................................................................................. 26
Controller Address Setting ........................................................................................................................ 27
MLC Replacement ....................................................................................................................................... 27
Power Supply Replacement ...................................................................................................................... 28
Light Sensor Replacement ........................................................................................................................ 28
Temperature Sensor Replacement ............................................................................................................ 29
Section 9: Daktronics Exchange and Repair & Return Programs .................................................................. 31
9.2 Repair & Return Program ................................................................................................................................. 32
Shipping Address........................................................................................................................................ 32
9.3 Daktronics Warranty and Limitation of Liability .......................................................................................... 32
Appendix A: Reference Drawings .......................................................................................................................... 35
Appendix B: Temperature Sensor Installation (DD2638167) ............................................................................... 37
Appendix C: International Installation ................................................................................................................... 39
Appendix D: Maintenance Log ............................................................................................................................... 41
Appendix E: Daktronics Warranty and Limitation of Liability (SL-02374) .......................................................... 43