Daktronics BB-2102 Tuff Sport Four-Sided Basketball LED Scoreboard - Manual (Page 43)

TNMC Maintenance & Troubleshooting 37
7.4 Power & Signal Summary
Reference Drawings:
Schematic: 3/4" and 1" DC TNMC’s ...................................................... Drawing B-146975
Refer to Drawing B-146975 in Appendix D for detailed schematics about display power and
signal routing.
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 is passed from the driver tray to the Home
display power supply, and then to the Guest display power supply.
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
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.
Drawing A-148701 in Appendix C provides 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). 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.