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TNMC Controller
Reference Drawings:
4 Column MASC LED Driver Specifications ........................................... Drawing A-166216
Component Locations; 832/848 Red/Amb LED TNMC, G4 ................... Drawing A-257029
The TNMC controller, located on the rear-access panel, receives signal directly from the
control console and sends data to the modules. Refer to the signal summary in
Section 9.3: Signal Summary for more information and to Drawing A-257029 for the location
of the controller board in the TNMC. The controller itself is detailed in Drawing A-166216 ,
and Figure 16 below illustrates a typical controller assembly. The card and transformer are
mounted to a tray, which in turn is mounted to the back panel of the TNMC cabinet.
Note that connectors J25 and J26 control Home and Guest display. When the ribbon cable is
plugged into J25, the TNMC sends home team information to the matrix display. In the
opposite message center, the signal cable would be plugged into the J26 connector, and guest
information would be displayed. (Switching the cables reverses the information each
message center receives.)
J19 is the connector for the address plug. The address setting for TNMCs will always be 221.
(There may be other settings if the TNMCs are used to display messages other than team
names.)
Diagnostic LEDs
Figure 16: TNMC Controller Assembly
Reference Drawing:
4 Column MASC LED Driver Specifications .......................................... Drawing A-166216
There are seven diagnostic LEDs located on the TNMC controller, six indicating when the
controller is receiving signal, and the seventh indicating power status. Four of the LEDs,
those indicating CAN and RS-232 signal functions, are not used with the TNMC controller.
The following table explains the operation and functions of each of the diagnostic LEDs.
TNMC Maintenance
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