Daktronics BA-2000 Series, Display Manual

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40 TNMC Troubleshooting & Maintenance
– Models BA-2001/2002/2008/2009
Rear Access
1. To access the internal components from the rear, remove the appropriate rear-access
panel from the TNMC by loosening all four of the screws.
2. Slide the access panel sideways to the larger part of the keyhole and carefully lift it
off the TNMC.
Note: Be careful when removing and handling the access panels as internal TNMC
components may still be attached to them.
The TNMC driver and primary power supply will always be located behind the first access
panel on the right, when viewing the display from behind. Any additional power supplies are
noted in the appropriate component location drawings.
Note: In TNMCs built before September 2009, the TNMC driver is located behind the first
access panel and the primary power supply is located behind the second access panel.
6.6 TNMC Drivers
Reference Drawings:
4 Column MASC LED Driver Specifications ............................................ Drawing A-166216
Specifications; Driver, MCAST, 4 Col ...................................................... Drawing A-793970
The TNMC driver receives signal from the control console via a signal surge arrestor card
and sends data to the modules. Refer to
Section 6.4 for more information on signal routing.
The driver itself is detailed in Drawing A-793970 in Appendix A . Figure 35 illustrates some
of the primary jacks and switches on the 4 Column MCAST driver used for TNMC functions.
The S2 DIP switch controls Home and Guest display. When the #5 switch is ON, the TNMC
sends guest team information to the matrix display. In the opposite message center, the
switch would be set to OFF, and home information would be displayed.
Note that the S2 DIP switch is also the component for setting the address (switches #1-4).
With switches 1-4 off, the address setting for a TNMC is preset at “221”. (There may be other
address settings if the TNMC is used to display messages other than team names.)
Figure 34: TNMC Cabinet Rear Access