Daktronics AF-3080-68-R,A - Manual (Page 55)

4.12 Troubleshooting
This sub-section contains some symptoms that you may encounter in the signs. 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 cables on the
module.
• Replace display board.
• Replace the driver.
One or more LEDs on a single
module fail to turn off. • Replace/check cables on
module.
• Replace display board.
• Replace the driver.
A section of the sign is not working.
The section extends all the way to
the right side of the sign. • Replace/check cables on the
drivers.
• Replace the first driver on the
left side of the first module that
is not working.
• Replace the second driver that
is not working.
• 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 cables from
driver to modules.
• Replace first driver.
• Replace controller.
• Check the fuses in the power
termination box.
A group of modules, which share
the same power supply assembly,
fail to work. • Check power supply voltage.
• Check cabling to power supply.
• Check cabling from power
supply to drivers.
• Replace the power supply
assembly.
Entire sign fails to work. • Check for proper line voltage
into the power termination
panel.
• Check the breakers to the
power termination panel.
• Check/replace the signal cable
to the controller.
• Check/replace the ribbon cable
from the controller to the driver.
• Check the voltage settings on
the power supplies.
• Replace the controller.
• Verify proper use of the
software in the operation
manual (ED-13348).
Temperature always reads 32ºF/
0ºC • Check temperature sensor
connections.
• Replace the temperature
sensor.
• Replace the controller.
Maintenance and Troubleshooting
4-13