Daktronics DF-12xx - Manual (Page 7)

Table of Contents i
Table of Contents
Section 1: Introduction..................................................................................... 1-1
1.1 Safety Precautions ....................................................................................... 1-3
1.2 Network Concepts ....................................................................................... 1-3
Current Loop ........................................................................................ 1-3
Radio .................................................................................................... 1-3
Modem ................................................................................................. 1-4
1.3 Product Overview........................................................................................ 1-4
1.4 Component Identification ............................................................................ 1-5
1.5 Daktronics Nomenclature ............................................................................ 1-6
Section 2: Mechanical Installation .................................................................. 2-1
2.1 Mechanical Installation Overview............................................................... 2-1
2.2 Lifting the Display....................................................................................... 2-3
Section 3: Electrical Installation ..................................................................... 3-1
3.1 Preparing for Power/Signal Connection ...................................................... 3-1
3.2 Power and Grounding Connections............................................................. 3-1
Power.................................................................................................... 3-1
Grounding ............................................................................................ 3-3
3.3 Lightning Protection .................................................................................... 3-4
3.4 Signal Connection ....................................................................................... 3-4
Current Loop (Direct)........................................................................... 3-5
Radio (Direct)....................................................................................... 3-7
Modem (Indirect) ................................................................................. 3-9
Host/Client Definitions and Address Settings .................................... 3-10
Section 4: Maintenance and Troubleshooting............................................... 4-1
4.1 Cabinet Specifications ................................................................................. 4-1
4.2 Component Location and Access ................................................................ 4-1
4.3 Service and Diagnostics .............................................................................. 4-2
Replacing a Digit.................................................................................. 4-2
Replacing a Digit Segment................................................................... 4-3
Segmentation and Digit Designation.................................................... 4-4
Replacing an LED Driver..................................................................... 4-4
Replacing a Signal Surge Board........................................................... 4-6
Replacing a Modem.............................................................................. 4-7
4.4 Light Sensor Location ................................................................................. 4-8
4.5 Troubleshooting........................................................................................... 4-9
Power On Self-Test: ........................................................................... 4-11
4.6 Replacement Parts ..................................................................................... 4-11
4.7 Daktronics Exchange and Repair and Return Programs............................ 4-14