Daktronics AF-3400-12-RGB - Manual (Page 38)

Maintenance and Troubleshooting 32
Annual Maintenance
A yearly inspection should be completed to maintain safe and dependable display operation.
This inspection should address the following issues:
Inspection item Possible corrective measures
Loose bolts, screws, rivets Tighten or replace, as required
Dust around fans, on cabinet bottom Vacuum or carefully wipe away
Water intrusion or stains
• Replace weather-stripping
• Tighten module latches
• Place silicon sealant around all locations
where water might enter
• Replace damaged electronic components
Paint corrosion by footings, tie
points, ground rods
• Check the metal for structural integrity.
• Replace and/or repaint as necessary.
6.3 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/check the ribbon cable.
• Replace/move the first module/driver that is not working.
• Replace/move the first module/driver on the left side of the
module that is not working.
• Check/replace the power supply assembly on the first
module that is not working.
One row of modules does not work
or is distorted.
• Replace/check ribbon cable to and from first non-working
module.
• Check for bent pins on module and controller.
• Replace/move module that is distorted.
• Replace/move the first module to the left of the one that is
not working.
• Replace controller.
A group of modules, (a
• Check the voltage to the module.
• Check wire connections at power supply and at module.