Daktronics AF-3300-12-RGB/20-R - Manual (Page 36)

Maintenance and Troubleshooting 4-10
4.10 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.
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 column or
block) fail to work. • Check the voltage to the module.
• Check the wire connections at the power
supply and at the module.
Entire display fails to work. • Check for proper line voltage to the power J-
box.
• Check for correct power at power termination
panel
• Check for correct power to controller (10 VAC)
and modules (3.5 or 5.3 VDC).
• Check the breakers in the power termination
panel.
• Check/replace the ribbon cable from the
controller to the modules.
• Check the voltage settings on the power
supply.
• Check the signal cable to the controller.
• Replace the controller.
Temperature always reads –196F/-
127C degrees F/0 degrees C. • Check temperature sensor cable connections.
• Check for correct power on temperature
sensor.
• Check that the temperature is set to address 1
• Replace the temperature sensor.
Display is stuck on bright or dim. • Check light detector cable/wiring.
• Check light detector for obstructions.
• Replace the light detector.
• Replace the controller.