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5.2 Assembly
1. Attach horn and speaker assembly to megaphone subassembly. Ensure alignment with location
pins. Pass speaker wires through the provided slot.
2. Plug speaker connector into the "out" header on PCB.
3. Push entire assembly gently into the housing until it stops. Turn clockwise 45° and push all the
way in. Turn counterclockwise 45° and align holes.
4. Secure with screws. Torque to 3 in/lb.
5. Replace volume control knob on volume control shaft. (does not apply to ACR/EM-2BA)
6. Plug the alarm plug attached to lanyard into jack in the side of the case near volume control.
(ACR/EM-1A only)
7. Replace the six batteries in three tubes at microphone end of megaphone case.
CAUTION: Observe polarity of batteries during installation procedure (see instructions on
8. Replace microphone and mouthpiece assembly. Align keyway, and secure with the three
setscrews.
9. Assembly is complete. Test unit in accordance with Section 4.1.
Y1-03-0340 Rev. C
ACR ELECTRONICS, INC.
Product Support Manual
Portable Safety Megaphone
battery tubes).
Company Confidential
9
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