Maintaining and Servicing the Integrity
39
Installation, Maintenance, and Service Manual
Federal Signal
www.fedsig.com
Resetting the Controller
These instructions explain how to reset the light bar controller after you install a service
replacement board or if the light heads operate erratically. For the ] light bar to operate
correctly, the controller stores information about which LED colors it controls. Resetting
the light bar controller may be necessary if you replace the controller board or if the
LEDs flash erratically. To scan which colors are available at the end of the reset cycle, the
controller briefly flashes all LEDs simultaneously.
Be sure to perform the reset cycle on a vehicle with a well-charged battery. Failure to do
so may cause the light bar to flash or operate incorrectly.
To reset the controller:
1.
Remove the barrel nuts and lens from the light bar. (See Removing and Reinstalling
the Light Bar Lens on page 37.)
NOTE:
If you are replacing the controller, ensure that power to the light bar is off,
and then disconnect all connectors to the controller. Install the new controller and
reconnect all cables to the controller board.
2.
Connect the main power and ground wires from the light bar to the battery.
3.
Apply ignition power to the light bar control head. Verify that the “POWER ON” LED is
lit on the controller board.
4.
Unplug the two ROC board connectors from the controller board. (See diagram.)
5.
Cycle power to the light bar by removing both the Convergence Network CAT5
connector and the power connector and reconnecting both after at least 5 seconds.
In response, the “ROC TX/RX” LED and the “Convergence TX/RX” LEDS flash ON/OFF
together. The “POWER ON” LED turns ON.
6.
Plug the two ROC board connectors back into their connections.
7.
Cycle power to the light bar by removing both the Convergence Network CAT5
connector and the power connector and reconnecting both after at least 5 seconds.
All LEDs briefly flash once to indicate reset is finished.
8.
Test and reassemble light bar.