Daktronics BB-2101 Tuff Sport Basketball LED Scoreboard - Manual (Page 41)

TNMC & Electronic Captions Maintenance & Troubleshooting 35
7.4 Power & Signal Summary
Reference Drawings:
Schematic: 3/4" and 1" DC TNMC’s ...................................................... Drawing B-146975
Schematic, Electronic Caption, BB-2153 ............................................. Drawing A-1102510
Refer to Drawing B-146975 in Appendix D for detailed schematics about display power and
signal routing. Refer to Drawing A-1102510 for BB-2153 and BB-2155 scoreboards.
Display signal routing can be summarized as follows:
1. Data from the All Sport
®
controller travels via signal cable (or radio) into the scoreboard.
2. The signal then travels through the driver, typically re-driven from the driver TB-31
to the current loop interface (CLI) cards located on the right-hand module of each
display.
3. A ribbon cable harness carries the signal to the first LED module, and the signal
relays from module to module via ribbon cable in daisy-chain style until it reaches
the last module in the display.
Display power routing can be summarized as follows:
1. Incoming power from the power cord terminates at the main scoreboard LED driver tray.
2. Using interconnect harnesses, the power for TNMCs is passed from the driver tray to
the Home display power supply, and then to the Guest display power supply. In stat
display electronic captions, each power supply receives power from a separate driver.
3. Power from the power supplies is relayed to all display modules.
4. The modules draw their power directly from the power supply assemblies; the
display driver receives power out from the first module via ribbon cable.
7.5 Component Locations & Access
Reference Drawings:
Installation, 6" Amber 8x48 TNMC .......................................................... Drawing A-148701
Installation- Programmable Caption- 0.75" 8x48 .................................... Drawing A-291200
Installation, Electronic Caption, BB-2153 .............................................. Drawing A-1102462
To access the internal components of the display, simply remove the two screws on either
side of the face panel that secure it to the scoreboard. Carefully remove the face panel from
the scoreboard, as there will be several cables connected to it. Drawings A-148701, A-291200,
and A-1102462 in Appendix C provide a detailed view of each display component and the
connections between them.
7.6 Display Drivers
Reference Drawings:
A/S 5000 Capable TNMC Shift Card; Specifications .............................. Drawing A-123794
Display drivers, also known as controllers or shift cards, use a 12-pin plug that mates with
jack J4 to set the address. For TNMCs, the address plug is set to 1 (221). A typical Player-Foul-
Points electronic caption for statistics displays uses address 3 (223). Pin 11 on the address
plug selects whether the display shows Guest (default) or Home data. Refer to Drawing
A-123794 in Appendix E for addressing information.