Daktronics 4000 Series Digital Billboard - Manual (Page 11)

Dis play T roubles hooting 5
S ection 2: Dis play Troubles hooting
The following table lists some problems that may occur while operating a display. The left column
contains a list of display problems. The right column contains a list of troubleshooting steps to help
resolve the issue. While this table does not cover all possible problems that may occur, it does cover
those that may occur most often.
4000 S eries Dis play P roblem T roubles hooting S teps
Entire display is blank
•
Check that the display is receiving power and all
internal and external breakers are turned on. When
power is applied to the display, power supply LEDs
should turn on.
•
Make sure the fiber-optic signal cable is connected
to the ProLink Router (PLR).
Module is blank
•
Make sure the module status indicators and power
supply in the blank section are all on.
•
Measure the voltage on the module power
connector to ensure a 12-volt output.
•
Make sure fiber connections to the ProLink Router
in the blank section are secure. Change the
connections with one another to test.
•
Check the power status LEDs on the power supply
connected to the module. If a power indicator LED
is off, ensure the fuse on the power supply output
is intact.
•
Check that the SATA cables to the module are
secure.