26
Maintenance and Troubleshooting
5.16 Troubleshooting
For additional assistance, contact Daktronics Transportation Customer Service at the
telephone number on the cover page.
Problem Observed
Possible Cause
Solution
No LEDs light, and the VFC-3000
controller does not communicate
with the central controller.
No power.
Check that the traffic cabinet
has power.
VFC-3000 controller or
modem is bad.
Refer to the controller manual.
No LEDs light, but the VFC-3000
controller communicates with the
central controller. All peripherals
indicate Communication Error.
No power at the display.
Check that the circuit breakers
in the traffic cabinet are on and
not tripped.
VFC-3000 controller is bad or
is not connected to the
display.
Refer to the controller manual.
CAN distribution board is
bad.
Replace CAN distribution
board.
DC/DC converter board is
bad.
Replace failed DC/DC
converter board.
No LEDs light, but the peripherals
pass and the VFC-3000 controller
is communicating with the central
controller.
CAN distribution board is
bad.
Replace CAN distribution
board.
No power to power supply
groups.
Check that the circuit breakers
are on and are not tripped.
LEDs on the entire display are
garbled, or wrong LEDs are on
throughout the display.
Signal connections at the
CAN distribution board are
incorrect.
Check the signal wiring.
VFC-3000 controller is bad.
Refer to the controller manual.
VFC-3000 controller has the
wrong display configuration.
Refer to the controller manual.
