Daktronics Galaxy AF-3500/3550 - Manual (Page 27)

Diagnostics and Troubleshooting 23
A column of the display does not work
• Check that the power cable is plugged into the 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 Section 7.1 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.
Brightness Problems
Display is stuck on bright or dim
• Check Manual/Auto dimming in Venus 1500 software. Brightness is typically set to Automatic. If
not, refer to the Venus 1500 software manual ( DD1370296) for more information.
• Check the light sensor cable and wiring for secure connections.
• Check the light sensor lens for obstructions (lower-left edge, front of primary cabinet).
• Replace the light sensor assembly.
Message Problems
Message only shows up on one side of the display
Determine if the displays are set up as two primary displays or one primary and one mirror display. To do
this, turn off the power, then turn it back on and observe the two display faces. If the setup involves two
primary displays, one should show “HW1” and the other “HW2”.
• Verify that two different addresses are setup for these two primary displays. Refer to the Venus 1500
software manual for more information.
• Verify that two different addresses are set on the controller(s).
• Send a different message to each display separately by clicking on that display name in the list.
Note: With two controllers, messages may not always run simultaneously.
• If the setup consists of a primary/mirror display, check the cable between them.
• Check that the cable and plugs are in good condition.
• Check that the MLC in the mirror display has power.