17
Installation, Maintenance, and Service Manual
Federal Signal
www.fedsig.com
Servicing the SIFZ ILS
Servicing the SIFZ 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 a list of
common replacement parts, see “Ordering Replacement Parts” on page 19.
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 SIFZ 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 SIFZ ILS.
2.
Remove the #10 screws that hold the upper shroud. See Figure 3 on page 18.
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.
