Maintenance and Troubleshooting
21
Cleaning process:
1.
Turn off power to the LED panel.
2.
Spray face and sides of the LED panel. Keep the nozzle of the pressure washer at
least 2' away from the LED panel.
Note:
Use caution along areas of the LED panel that contain seams, weather
stripping, or silicone. Ensure the pressure washer does not peel or rip any
sealing material.
3.
Check the light sensor and verify it is visible through the mask of the LED panel.
LED and Electronic Circuitry
Test LED and electronic circuitry at intervals determined by customer requirements.
Daktronics recommends performing the tests at least monthly. Perform tests on the DDMS
to check for hardware problems and incorrect variable settings.
Note:
The following tests display functions, not other DDMS equipment hardware.
1.
Connect to the DDMS controller.
2.
Check that the temperature levels shown on the Sign Status screen of the Sign
Control tab are the appropriate values.
3.
Perform a diagnostics test and check that all the power supplies and other
configured peripherals pass.
4.
Make sure the light sensor readings are appropriate for the current conditions.
5.
Perform a pixel test and repair bad pixels.
6.
Run the moving rows and moving columns test patterns; repair bad pixels or replace
failed modules.
Fiber-to-Wire Enclosure
• Check for water stains and other signs of water intrusion.
• Seal any leaks that have developed with a silicone sealant or another suitable sealer.
• Repair any door gaskets that have tears or missing pieces.