Daktronics AB-1600-1.5,2.5 - Manual (Page 4)

Table of Contents ii
Section 4 : Maintenance & Troubleshooting................................................................ 4-1
4.1 Maintenance & Troubleshooting Overview...........................................................4-1
4.2 Operational Summary..........................................................................................4-2
Power Summary.................................................................................................4-2
Line Receiver Signal Summary............................................................................4-3
Data Distributor Signal Summary.........................................................................4-3
Ventilation & Temperature Sensing Summary.......................................................4-3
4.3 Accessing the Inside of the Display......................................................................4-4
Front Accessible Displays – Removing Lens Reflector Assemblies........................4-4
Rear Accessible Displays – Removing Back Sheets..............................................4-5
4.4 Lenses ...............................................................................................................4-7
4.5 Lamp Testing & Replacement .............................................................................4-8
The Diagnostics Method of Lamp Testing & Replacement ....................................4-9
Optional Lampbank Driver Test Table ................................................................ 4-10
4.6 Lampbanks....................................................................................................... 4-11
4.7 Display Ventilation Summary............................................................................. 4-12
4.8 Fan Filters ........................................................................................................ 4-12
Filter Removal (Rear Access) ........................................................................... 4-14
Filter Removal (Front Access)........................................................................... 4-14
4.9 Fans................................................................................................................. 4-14
4.10 Troubleshooting the Internal Temperature Monitoring System.............................. 4-15
4.11 Troubleshooting the Line Receiver ..................................................................... 4-16
Vertical Shift Boards......................................................................................... 4-18
4.12 Troubleshooting the Data Distributor .................................................................. 4-18
Column Director Power Supply.......................................................................... 4-21
Line Filters ....................................................................................................... 4-22
4.13 Weather Stripping Maintenance ......................................................................... 4-22
4.14 Louver Maintenance ......................................................................................... 4-23
4.15 Interior Maintenance......................................................................................... 4-26
4.16 Structural Maintenance & Inspection ................................................................. 4-26
4.17 Cleaning the Signal Connectors.......................................................................... 4-27
4.18 FCC Modem Notice.......................................................................................... 4-27
4.19 Troubleshooting Checklist – Line Receiver Displays............................................ 4-28
4.20 Troubleshooting Checklist – Data Distributor Displays......................................... 4-29
4.21 Replacement Parts List – Line Receiver Displays ............................................... 4-30
4.22 Replacement Parts List – Data Distributor Displays ............................................ 4-31
4.23 Daktronics Exchange/Repair & Return Programs ............................................... 4-32
Appendix A: Project Specific Drawings ................................................................................1
Appendix B: General Drawings..............................................................................................1
Appendix C: Forms & Reports ...............................................................................................1