Daktronics Galaxy AF-3200 34 mm - Manual (Page 29)

7.3 Troubleshooting Display Problems
This section contains some symptoms that may be encountered in the displays. This
list does not include every possible symptom or solution but does represent common
situations and simple steps to resolve them. The solutions are given in priority order
so try the first solution first.
Troubleshooting may require the opening of the display cabinet. Refer to Section 6.1
for instructions on this procedure. Before closing the cabinet, make sure that the
power and signal cables are reconnected correctly and the latches are tightly closed.
Module and LED problems
One or more LEDs are not lighting
• Check/replace the ribbon cables on the module.
• Check for bent pins on module jacks.
• Move the module to a different location.
• If that doesn’t help, the module may need to be replaced.
One or more LEDs on a single module will not turn off
• Check/replace the ribbon cables on the module.
• Check for bent pins on the module jacks.
• Move the module to a different location.
• If that doesn’t help, the module may need to be replaced.
A section of the display is not working, extending all the way to the right end
• Check/replace ribbon cables from the last working module in the row to the
first non-working module next to it (Figure 20).
• Move or replace the first non-working module.
• Move or replace the last working module.
• Check that the power LED is on at the back of the modules.
• Check power to the first non-working module.
• Check output from the appropriate power supply.
• Make sure the power cable to the module is firmly connected.
Figure 20: Modules Not Working
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.
Diagnostics and Troubleshooting 7-4