SmartSiren Platinum Convergence Network
57
or death.
CHAPTER 10
Servicing the Convergence Network System
Federal Signal recommends that the siren amplifier/relay module and control head be returned to
your local distributor or Federal Signal for service. External components such as cabling, fuses, and
the red and black insulators are available as replacement parts (see Table 10.1 on page 63). With the
exception of the slide switch in the control head, there are no other user-serviceable parts within the
control head or the siren amplifier/relay module. After servicing the system, test it to ensure that it
is operating properly. For more information, see “Testing the Convergence Network Installation” on
page 47.
Replacing the Slide Switch
The slide switch can be removed from the control head for replacement or service without
disassembling the entire control head. The slide switch is secured to the front of the control head by a
bezel and two 1/4"-20 x 3/4" screws. The switch is connected to the four-pin J3 connector on the back
of control head assembly, which lies below the logic control and power control PCBs and is easily
accessible.
STATIC SENSITIVE DEVICE—The circuitry of the control head can be damaged
by electrostatic discharge. Follow anti-static procedures removing the slide
switch.
Tools needed:
• 7/16" nut driver
• Small Phillips screwdriver
• Small needle-nose pliers
• 1/64" hex key wrench
Dismounting and Disconnecting the Control Head
To remove the control head:
1
. Use a 7/16" nut driver to remove the two 1/4-20 x 3/4" hinge screws securing the two
mounting brackets together. Retain the screws and the two 1/4" external-tooth lock washers
(Figure 10.1 on page 58).
2
. Remove the two #6-32 x 1/4 Phillips screws securing the bracket to the rear of the control
head (Figure 10.2 on page 58). Retain the screws and the two #6 lock washers.
