Daktronics BA-515, Руководство пользователя, Страница: 72 / 208

TNMC Maintenance
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Corrosion
Check the paint, and look for possible corrosion, especially at footings, structural tie
points, and ground rods and other types of grounding electrodes.
Note:
If any of the preceding conditions exist, make repairs or take corrective action
immediately.
9.7 Troubleshooting
This subsection 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 fails to light.
ƒ
Check/replace the ribbon cables on the
module.
ƒ
Replace the module.
One or more LEDs on a single
module fails to turn off.
ƒ
Check/replace the ribbon cables on
module.
ƒ
Replace the module.
A section of the display is not
working; the section extends all the
way to the right side of the display.
ƒ
Replace the first module/driver on the left
side of the first module that is not working.
ƒ
Replace the second module that is not
working.
ƒ
Replace the power supply assembly on the
first module that is not working.
ƒ
Replace the ribbon cable.
One row of modules does not work
or is garbled.
ƒ
Replace the first module.
ƒ
Replace the controller.
A group of modules that share the
same power supply assembly fails
to work.
ƒ
Replace the power supply assembly.
Entire display fails to work.
ƒ
Check for proper line voltage into the
power termination panel.
ƒ
Check/replace the ribbon cable from the
controller to the modules.
ƒ
Check the voltage settings on the power
supplies.
ƒ
Check/replace the signal cable to the
controller.
ƒ
Replace the controller.