Daktronics Valo Digital Billboard - Manual (Page 15)

Display Troubleshooting 7
2000 and 3000 Series Display Troubleshooting
2000 and 3000 Series Display Problem Troubleshooting Steps
Entire display is blank
•
Check that the display is receiving power and all
breakers are turned on. When power is applied to
the display, power supply LEDs should turn on.
•
Check the data distributor LCD status to make
sure the input signal is locked and the output is
not blank.
•
Make sure the fiber-optic signal cable connects to
the data distributor. The input signal should be
locked.
Section of display is blank
•
Make sure the power status LEDs on the
modules, power supplies, and in the blank section
are all on.
•
Make sure fiber connections to the multi-line
controllers in the blank section are secure.
Change the connections with one another to test.
16-48 high section of display is blank
•
Check the power status LED on the multi-line
controller in the blank section.
•
Verify the status indicator digit on the multi-line
controller.
•
Make sure fiber connections to the multi-line
controllers in the blank section are secure.
Change the connections with one another to test.
16 high section of display is blank
•
Check the ribbon cable connections between
modules and the multi-line controller in the blank
section. From the front of the display, check the
connection of the left-most module first.
•
Make sure that modules are receiving signal and
power. Signal will not pass through a module that
does not receive signal and power.
Module is blank
•
Check the power status LEDs on all power
supplies connected to the module. If a power
indicator LED is off, ensure the fuse on the power
supply output is intact.
•
Check the ribbon cable input to the module and
the output from the previous module.
Entire display is garbled or uncontrollable
•
Check the data distributor receiver board status
LEDs to make sure the data distributor is receiving
power.
•
Ensure the fiber-optic signal cable is connected to
the data distributor. The input signal should be
locked. If the input signal is not locked, check the
fiber connections.
8 high section of the display is garbled
•
Check the ribbon cable connections between
modules in the garbled section. From the front of
the display, check the connection of the left-most
module first.