Federal Signal Corporation JetSolaris JLX Series, Инструкция по установке и обслуживанию, Страница: 28 / 34

28
Chapter 5: Servicing the Lightbar
Replacing an End Board
If the LEDs and halogen lamps on the end 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 end board or
the control board. For additional information, see "Replacing the Halogen Lamps" on page 24,
"Replacing the Control Board" on page 29, and "Replacing a Fuse" on page 31.
Removing an End 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 end dome to the aluminum extrusion and remove the nameplate (Figure 3.1 on
page 16).
3. Slide the end dome off the aluminum extrusion.
STATIC SENSITIVE DEVICE
The PCBs can be damaged by an electrostatic discharge (ESD). Follow anti-
static procedures while servicing the PCB.
4. Use a 1/4" nut driver to remove the eight hex-head screws securing the end board to
the end bracket.
5. Turn the endboard over, noting the placement of the ground lead on the aluminum
extrusion.
5/16" HEX HEAD SCREWS (4)
SECURING THE CENTER
BRACKET TO THE
ALUMINUM EXTRUSION
CENTER BRACKET
ALUMINUM EXTRUSION
CENTER BOARD
END BOARD
END BRACKET
290A6262
1/4" HEX HEAD SCREWS (4)
SECURING THE CENTER BOARD
TO THE BRACKET
1/4" HEX HEAD SCREWS (8)
SECURING THE END BOARD
TO THE BRACKET
5/16" HEX HEAD SCREWS (10)
SECURING THE END BRACKET
TO THE ALUMINUM EXTRUSION
Figure 5.4: Center board and end board exploded view