Replacing The Printed Circuit Board (Pcb) - Federal Signal 154XST Serie Instrucciones De Instalación Y Mantenimiento

Replacing the Printed Circuit Board (PCB)

To replace the PCB:
1. Disconnect the power to the beacon and wait at least 5
minutes to allow all capacitors to discharge.
2. Remove the threaded dome assembly by twisting it
counterclockwise.
3. Remove and retain the screw that secures the circuit board
to the housing.
4. Disconnect power to the PCB:
a) To replace a Series A1, disconnect the two supply wires
from the old circuit board and connect them to the mating
side of the supplied adapter assembly. Connect the other
side of the adapter assembly to the new circuit board.
b) To replace a Series A2 circuit board, disconnect the
power connector from the old circuit board and connect
it to the connector on the new circuit board.
NOTE: Ensure that the connector is fully seated on the
circuit board connectors.
5. Secure the new circuit board to the housing with the screw
removed in step 2.
6. Install the new flash tube in the socket. Ensure that the flash
tube is fully seated in the socket.
7. Replace the globe assembly. Ensure that the globe
assembly is seated securely against the gasket.
8. Test the light for proper operation.
Models 154XST and 154XST-S
Installation and Maintenance Instructions
17