Daktronics TN-2010, Display Manual

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TNMC Maintenance
6-8
If you are accessing the unit from the rear, follow this procedure:
1. Remove the rear access panel (explained in preceding subsection.)
2. While holding onto the module, push it out and turn it in such a manner
(generally a sideways, diagonal turn) that it will fit through the frame
opening.
3. Then pull the module back through the opening in the frame. Carefully
disconnect the ribbon cables. Once again, label the cables, indicating which
cable was removed from which connector; the labeling will be helpful when
reconnecting.
When installing a module, reverse the previous steps and take note of the following
points:
Weatherstripping on the back edge of the module must be intact and in
good condition to prevent water from seeping into the display.
Module latches must be fully engaged to create a watertight seal around the
edge of the module. The module should be firmly seated against the display
when the latches are fully engaged.
Each module assembly contains a module housing (containing LEDs and the driver
board) and a louver assembly.
Drawings B-126111 and B-126112 illustrate the
various module components.
Individual components such as louvers can be removed for service, but Daktronics
recommends that the module be kept intact and that the entire assembly be sent in for
repair or replacement.
Power Supplies
Reference Drawings:
Schematic, Red TNMC, Gen IV .................................. Drawing A-252681
Schematic; Amber TNMC, Gen IV .............................. Drawing A-252645
The red-LED TNMC uses a single power supply assembly to power all modules in
the 8x32 and 8x48 models. The amber TNMC uses a dual power supply assembly to
power all modules in the 8x32 or 8x48 models. Refer to
Drawings A-252681 and A-
252645 .
Removing/Changing a Power Supply
Complete the following steps to remove a power supply from the display:
1. See the directions in the preceding Module and Drivers subsection for
information on how to access the component from the front or rear.
2. Disconnect all the wires connected to the power supply.
3. Remove the hardware holding the power supply in place to free the unit.
4. Follow these steps in reverse order to install a new power supply.