Daktronics Galaxy AF-3400 34 mm Monochrome/RGB - Manual (Page 41)

Section 7: Diagnostics and Troubleshooting
Safety Precautions
• Read and understand these instructions for proper operation of the display.
• Disconnect power when servicing the display.
• Do not modify the display structure or attach any panels or coverings to the
display without written consent of Daktronics.
7.1 Display Interior
This section defines the diagnostic LEDs located on the controller and also provides
troubleshooting tips for solving display problems.
The controller is one of the internal components labeled in Figure 31. The controller is the
“brains” of the display, receiving communication from the computer and then sending the
appropriate information to the modules. The LEDs on the controller are able to show whether
the power and communication signal are working correctly.
Since the controller is inside the display, a module or two will need to be removed to view
the diagnostic LEDs. To access the interior of the display, refer to Section 6.1 for instructions
and illustrations.
Remember to turn off power to the display before accessing the interior.
However, once the modules are removed and wires are found to be safe, power can be
turned back on to view the diagnostic LEDs.
Figure 31: Interior Component Locations
Diagnostics and Troubleshooting
33