Daktronics AF-3065-34-RGB - Manual (Page 34)

4.8 Display Maintenance
A yearly inspection should be completed to maintain safe and dependable display operation. This
inspection should address the following issues.
· Loose Hardware
Verify fasteners, such as bolts and rivets, have not come loose. Fasteners should be checked
and tightened or replaced as required.
· Excessive Dust Buildup
Occasionally it may be necessary to vacuum the inside of the display cabinet to remove
dust/dirt buildup that may interfere with airflow.
· Water Intrusion – Water Stain Marks
Water can enter the display where weather stripping has come loose or deteriorated or where
fasteners have come loose allowing gaps in the panels or where moisture may be entering
around hardware. Check electronic components for displays of corrosion.
· Corrosion
Check the paint, and look for possible corrosion especially at footings, structural tie points and
ground rods.
If any of the above conditions are noticed, action must be taken to correct the situation.
4.9 Troubleshooting
This sub-section contains some symptoms that may be encountered in the displays. This list does not
include every possible symptom, but does represent common situations that may occur.
Symptom/Condition Possible Cause/Remedy
One or more LEDs on a single module fail
to light. · Replace/check ribbon cables on the module.
· Replace the module.
One or more LEDs on a single module fail
to turn off. · Replace/check ribbon cables on module.
· Replace the module.
A section of the display is not working. The
section extends all the way to the right side
of the display. · Replace the first module/driver on the left side of the
first module that is not working.
· Replace the second module that is not working.
· Replace the power supply assembly on the first
module that is not working.
· Replace the ribbon cable.
One row of modules does not work or is
garbled. · Replace first module.
· Replace controller.
· Check the fuses in the power termination box.
A group of modules, which share the same
power supply assembly, fail to work. · Replace the power supply assembly.
Entire display fails to work. · Check for proper line voltage into the power
termination panel.
· Check/replace the ribbon cable from the controller
to the modules.
· Check the voltage settings on the power supplies.
· Check/replace the signal cable to the controller.
· Replace the controller.
· Verify proper use of the software in the operation
manual.
Temperature always reads 32 degrees F/0
degrees C · Check temperature sensor connections.
· Replace the temperature sensor.
· Replace the controller.
Maintenance & 4-8
Troubleshooting