Daktronics Galaxy AF-3050 Series, Руководство пользователя

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3. Pull the module of the sign far enough to reach around the back and disconnect the ribbon
cables.
When installing a module, reverse the previous steps and take note of the following points:
· The weather-stripping on the back edge of the module must be intact and in good condition if
it is to prevent water from seeping into the sign.
· The 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 sign when the latches are fully
engaged.
Each module assembly is made up of a module housing (containing LEDs and the pc board) and a
louver assembly.
From time to time, it may become necessary to remove one or more parts from the module
housing for repair or replacement. The following sub-sections explain how to disassemble a
module.
Removing the Louver Assembly
Complete the following steps to remove the louver assembly from the face of the module:
1. Remove the five twist-on fasteners holding the louver assembly to the module, located on
the rear of the module.
2. Lift the louver assembly straight away from the module.
Damaged louvers may reduce the brightness and contrast of this sign. If any of the louvers on
the sign are broken or damaged, the entire louver assembly must be replaced. Refer to the
Replacement Parts List in Section 4.11 . When replacing the louver assembly take care not to
strip the plastic twist-on fasteners.
Power Supplies
The LED power supplies are identified as assemblies earlier in the component location drawings.
Each power supply controls two modules; a power supply assembly controls four.
Complete the following steps to remove a power supply from the sign:
1. Remove the module directly in front of the failed power supply.
2. Disconnect all the wires connected to the power supply.
3. Remove the hardware holding the power supply in place to free the unit.
Follow these steps in reverse order to install a new power supply.
Maintenance and Troubleshooting 4-5