Daktronics BA-2000 Series, Display Manual

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TNMC Troubleshooting & Maintenance
– Model BA-2018
51
7.6 TNMC Drivers
The TNMC driver receives signal from the
control console via a signal surge arrestor card
and sends data to the modules. Refer to
Section
7.4 for more information on signal routing.
Figure 42 illustrates a TNMC control assembly
with a 4-column MASC driver. In Appendix A ,
refer to Drawings A-166216 and A-165028 for
more information about the driver.
Connectors J25 and J26 control Home and Guest
displays. When the ribbon cable is plugged into
J25, the TNMC displays home team information.
In the opposite message center, the signal cable
should be plugged into the J26 connector to
display guest information.
J19 is the connector for the address plug. The
address setting for a TNMC will always be 221.
(There may be other settings if the TNMC is
used to display messages other than team
names.) Refer to
Drawing A-115079 in
Appendix A for addressing information.
Diagnostic LEDs
The following table explains the functions of the primary diagnostic LEDs on the 4 Column
MASC drivers:
LED Name Color Illumination Summary
(CL) RX Red
Steady on or blinking when the driver is receiving
signal and off when there is no signal
(CL) TX Green
Steady on or blinking when the driver is
transmitting and off when there is no signal
Power Green Steady on to indicate the driver has power
Status Amber Blinking to indicate driver is running
Replacing a Driver
1. Access the internal components using the appropriate Front / Rear Access method
described in Section 7.5 .
2. Disconnect all power and signal connectors from the driver by squeezing together the
locking tabs and pulling the connectors free.
Note: It may be helpful to label the cables to know which cable goes to which
connector when reattaching a driver.
Figure 42: TNMC Control Assembly
(4 Column MASC Driver)