Servicing The Sif Ils; Replacing A Pcb - Federal Signal Corporation SpectraLux SIFZJ FSJoin Installation Maintenance And Service Manual

Servicing the SIF ILS

This section has instructions for replacing the light bar PCBs and reflectors. For additional
service and support, call the Federal Signal Service Department at 800-433-9132, 7 a.m.
to 5 p.m., Monday through Friday (Central Time). For lists of common replacement parts,
see "Ordering Replacement Parts" on page 20.

Replacing a PCB

NOTE: After replacing an LED board an LED scan may be necessary. For the serially
controlled model, see Table 1 on page 10 for the DIP switch setting. For the
discrete-wire model, see "Programming the Discrete-Wire SIF ILS" on page 13 for
information on cycling through the flash patterns using the white programming wire.
To replace a PCB:
1. Remove the light bar from the vehicle according to the vehicle-specific installation
instructions included with the SIF ILS.
2. See Figure 3 on page 18. Remove the #10 screws that hold the upper shroud.
3. Disconnect the cables. For the power/ground connector, press the tabs with a pen or
small screwdriver and remove the wires.
4. Remove the #6-32 nuts that hold down the cable clamps, reflectors, and PCB.
Lift off the parts and remove the PCB.
5. Reassemble the light bar. Twist the power and ground cables to ensure there are no
stray wires.
Installation, Maintenance, and Service Manual
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Servicing the SIF ILS
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