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CHAPTER 9
Servicing the PA300-CN
Replacement parts are available for the control pad and siren amplifier. See "Ordering Replacement parts on
page 48.
Replacing the Slide Switch
The slide switch can be removed from the control pad for replacement or service without disassambling the
entire control pad. The slide switch is secured to the front of the control pad 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 pad assembly, which lies
below the logic control and power control PCBs and is easily accessible.
STATIC SENSITIVE DEVICE—The circuitry of the control pad 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 Pad
To remove the control pad:
1.
See Figure 9.1 on page 46. 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..
2.
See Figure 9.2 on page 46. Remove the two #6-32 x 1/4" Phillips screws securing the bracket to
the rear of the control pad. Retain the screws and the two #6 lockwashers.
PA300-CN Siren Amplifier
45
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