Daktronics ColorSmart BB-3101, Display Manual, Page: 39 / 122

TNMC & Electronic Captions Maintenance & Troubleshooting 33
7.4 Power & Signal Summary
Reference Drawings:
Address Table; Driver- MCAST- TNMC DIP Switch ............................... Drawing A-284773
Schematic: Multicast TNMC 3/4" (.75) ................................................... Drawing B-296394
Refer to Drawing B-296394 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 and out to the first LED module of the
Home display via ribbon cable harness.
3. The signal relays from module to module via ribbon cable in daisy-chain style until it
reaches the last module in the Guest display. In electronic captions, the Home and
Guest displays receive signal from separate drivers.
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 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 S2 DIP switch package on the main scoreboard driver sets the display driver address.
Refer to
Drawing A-284773 in Appendix E for the location and functions of the S2 DIP switch.

For TNMCs, switches 1-4 of S2 are set to OFF, which equals address 221. With Switch 5
off, Home information is displayed. With Switch 5 on, Guest information is displayed.

For electronic captions, a typical Player-Foul-Points display uses address 223, with
Switch 2 and Switch 5 both on.
7.5 Component Locations & Access
Reference Drawings:
Installation- MCAST- 6" Amber 8x48 TNMC ........................................... Drawing A-296610
Installation: Programmable Caption- 8x48-6"- MCAST .......................... Drawing A-324099
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-296610 and Drawing A-324099 in Appendix C provide a detailed view of each
display component and the connections between them.