Daktronics AF-3700-20 RGB - Manual (Page 42)

Diagnostics and Troubleshooting 32
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.
• Check the power supply fuse and replace as necessary.
• 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 (bottom row, second module from left).
• Check the diagnostic LEDs on the controller for Power and Run (Section 7.1).
• 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. The Brightness is typically set to
Automatic. If not, perform the following step:
- In Display Manager/ Diagnostics, select Automatic and click Set Brightness.
• 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.
Display is too bright at night
Set the Dimming Schedule. Refer to the Venus 1500 manual (ED-13530).
Message problems
Blank display seen after boot-up
A blank display is normal after the boot-up procedure. When finished, the display will be blank
except for a flashing LED in the lower right corner. The display is then waiting for a message to
be sent.
LED flashes in the lower right corner
The flashing pixel indicates that the display is receiving power and waiting for a message to be
sent. Once a message is sent and run, the flashing LED should be replaced with the message.
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 set-up involves two primary displays, one should show “HW001” and the other
“HW002”.
ƒ
Verify that two different addresses are set up for these two primary displays in the
Venus 1500 Administrator.
ƒ Verify that two different addresses are set on the controller(s).
ƒ 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 set-up consists of a primary/mirror display, check the cable between them.
• Verify that the cable is firmly plugged into both cabinets.
• Check that the cable and plugs are in good condition.