Daktronics VF-24 Series, Руководство пользователя

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8. Reapply power to the power supplies turned off in Step 1 .
9. Test the modules:
a. Display the moving row, moving column, and all on/all off test messages. Run
the test messages at both 10% and 100% brightness settings. Watch for proper
operation of the LED module during each test message.
b. Perform a pixel test and check that all pixels operate correctly.
Environmental Sensors
Airflow Sensor
To remove the sensor:
1. Locate the failed sensor reported by the controller.
2. Turn off the intake fan breaker.
3. Loosen the
1
/
4
-turn fasteners in the upper corners of the intake fan assembly panel
and rotate the intake assembly forward.
4. Disconnect the Mate-n-Lok
®
connector.
5. Remove the nut and mechanical screw holding the sensor in place.
To replace the sensor, repeat the above steps in reverse order.
Light/Temperature/Humidity Sensor
To remove the sensor:
1. Locate the failed sensor reported by the controller.
2. Disconnect the terminal block from the sensor.
3. Remove the two Phillips screws fastening the sensor to the mounting plate.
4. Ensure the address of the sensor is the same as the address of the sensor being
replaced.
To replace the sensor, repeat the above steps in reverse order.
Power Supply Assembly Replacement
Power supply assemblies are mounted on the rear interior of the display.
1. Turn off power to the power supply assembly by turning off the breaker in the
distribution panel.
2. Locate the failed power supply assembly reported by the VFC-3000 controller/
Vanguard
®
Field Controller.
3. Loosen the screws securing the power supply assembly to the backsheet, and gently
lift the power supply assembly off the backsheet.
4. Ensure the power supply is addressed the same as the power supply being replaced.
To replace the new power supply, repeat the above steps in reverse order.