32
Chapter 5: Servicing the Lightbar
Replacing a Center Board
The center board is approximately one third the size of an end board. The 54" JLX has one
center board, the 60" JLX has three, and the 72" JLX has four. If the LEDs and halogen lamps
on the center board do not light, the fuse at F3 or F3 on the control board is intact, and you
have replaced the lamps, the problem may lie with the center board. For additional information,
see "Replacing the Halogen Lamps" on page 25, "Replacing the Control Board" on page 31, and
"Replacing a Fuse" on page 32.
STATIC SENSITIVE DEVICE
The PCBs can be damaged by an electrostatic discharge (ESD). Follow anti-static
procedures while servicing the PCBs.
Removing a Center Board
1. Disconnect power to the lightbar.
2. Use a flat-head screwdriver to remove the two 1/4-20 screws that secure the
passenger-side or driver-side end dome to the aluminum extrusion and remove the
nameplate (Figure 3.1 on page 14).
3. Slide the dome off the aluminum extrusion.
4. Slide domes off the lightbar to expose the appropriate center board.
5. Use a 1/4" hex wrench to remove the four hex-head screws securing the board to the
end bracket.
6. Remove the #8-32 screw securing the ground wire (GND) to the center board and
remove the wire from the board.
NOTE: The colors of the wires connected to the center board are silkscreened next to
their connectors.
7. Disconnect wires and harnesses from the center board and remove it from the lightbar.
Installing a Center Board
1. Reconnect the wires and harness to the center board and secure them with plastic ties.
DO NOT OVERTIGHTEN SCREWS/NUTS
To avoid damage to the lightbar, do not overtighten the screws and nuts.
2. Secure the ground wire to the ground connection (GND) on the center board with the
#8-32 Phillips screw.
3. Secure the center board to the bracket with the four 1/4" hex head screws.
4. Reinstall the domes.
5. Reconnect power to the lightbar.
Summary of Contents for JetSolaris JLX Series
Page 2: ......