Daktronics VANGUARD VL-3500 Series, Руководство пользователя

Страница: 21 / 33

Diagnostics and Troubleshooting
17
• Move or replace the first non-working module with the one on the left of the non-
working section.
• Move or replace the first module to the left of the non-working modules.
• Check the translation table is correct.
One row of modules is not working or shows a distorted message.
• Check/replace the ribbon cables to and from the first non-working module.
• Check for bent pins on the jack going to a non-working module.
• Move or replace the modules that show distorted text.
•
Move or replace the first module to the left of the non-working module.
A column of the display does not work.
• Check that the power cable is plugged into the first module in the column.
• While power is on, look at the back of the malfunctioning module(s) to see if the
diagnostic LED is off, implying a power supply problem.
• Verify power to the power supply.
Entire display fails to work.
• Check the breakers in the building connected to main power source.
• Check the breakers in the power termination panel.
• Check the diagnostic LEDs on the controller for Power and Run. Refer to the
Controller Diagnostics (p.15) section for more information.
• Check/replace the ribbon cable from the controller to the modules.
• Verify proper use of the software by checking the software manual.
• Check the translation table is correct.
Brightness problems
Display is stuck on bright or dim.
• Check the light sensor cable and wiring for secure connections.
• Check the light sensor lens for obstructions (lower left edge, front of cabinet).
• Replace the light sensor assembly.
Display is too bright at night.
Set the Dimming Schedule.