Daktronics AF-3112-34-R,A - Manual (Page 48)

Maintenance and Troubleshooting 4-12
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/check the ribbon cable to the first
module.
• Check that the first module has power.
• 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.
One row of modules does not work or is
garbled. • Replace/check ribbon cable to first module.
• Check for bent pins on module and controller.
• Replace controller.
• Replace first module.
• Check the fuses in the power termination box.
A group of modules, (a column or block)
which share the same power supply
assembly, fail to work. • Check the wire connections at the power
supply.
• Check power to modules.
• Replace the power supply assembly.
Entire display fails to work. • Check for proper line voltage into the power
termination panel.
• Check for correct power to controller and
modules.
• Check fuse in power termination panel.
• Check/replace the ribbon cable from the
controller to the modules.
• Check the voltage settings on the power
supplies.
• Verify proper use of the software in the V1500
Controller manual (ED13530).
• Replace the controller.
• (For direct displays) Check the signal cable to
the controller using the loopback test.
Temperature always reads –196F/-127C
degrees F/ C • Check temperature sensor connections.
• Replace the temperature sensor.
• Replace the controller.
Display is stuck on bright or dim. • Check Manual/Auto dimming in Venus 1500
software.
• Check light detector cable.
• Check the address on the Light Sensor.
• Check light detector for obstructions.
• Replace the light detector.
• Replace the controller.