Daktronics BA-2009, Руководство пользователя

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TNMC Maintenance 7-3
Power routing for the display can be summarized as follows:
1. Incoming power terminates at the terminal block in the scoreboard driver
enclosure. Using the same harness and J42-P43 connections as signal,
power is then routed to the TNMC controller where it then travels to both
the power supply assembly and to a transformer on the controller tray.
2. From the power supply assembly, power is relayed to the first module, and
then from module to module.
3. While the modules draw their power directly from the power supply
assemblies (12 V or amber), the TNMC controller itself receives 16 V
power from the transformer.
7.5 Service and Diagnostics
The following subsections address servicing of these display components:
TNMC Controller
Modules and Drivers
Power Supplies
The subsections also address diagnostic LEDs and signal/power connectors
found on the TNMC controller.
Remember: Disconnect power before servicing internal components.
TNMC Controller
Reference Drawings:
4 Column MASC LED Driver Specifications.......... Drawing A-166216
F. Assy, 8x48-2.5” LED TNMC.............................. Drawing B-164514
F. Assy, 8x48-2.5" LED TNMC, Amber, G3 .......... Drawing B-177822
The TNMC controller, located on an internal vertical panel, receives signal directly
from the control console and sends data to the modules. Refer to the signal summary
in
Section 5.3 for more information and to Drawings B-177822 or B-164514 for the
location of the controller board in the TNMC. The controller itself is detailed in
Drawing A-166216 .
The card and transformer are mounted to a tray, which is mounted to an internal
vertical panel of the TNMC cabinet.
Note: Connector J25 and J26 control home and guest. 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.