Product Support Manual ACR/EM-2BA™ Portable Safety Megaphone FAA PMA Approved under A3-06-1405Product No. 2206 Y1-03-0057 Rev. K (25-60-06) The technical data in this document (or file) is controlled for export under the Export Administration Regulations (EAR), 15 CFR Parts 730-774, ECCN: EAR99. Violations of these laws may be subject to fines and penalties under the Export Administration Act.
REV DESCRIPTION DATE APVD. D Modify assembly & disassembly notes, add new part num- 5/13/99 bers to spare parts list for new design. T. Martin E Assign 4-digit codes to spare parts. 12/8/99 L. Subrattee F Added FAA approval information to front cover. 4/27/04 T. Martin G Update to add revision table and updated formatting. 2/7/08 T. Martin H Updated for rebranding 4/3/09 T. Martin J Updated to add export admin regulation statement 11/24/09 T.
Table of Contents SECTION 1 – DESCRIPTION 4 SECTION 2 – OPERATION 4 section 3 – maintenance 5 3.1 Cleaning 5 3.2 Battery Replacement 5 SECTION 4 – TESTING, troubleshooting & repair 5 4.1 Testing 5 4.2 Repair 6 SECTION 5 – DISASSEMBLY & Assembly 6 5.1 Disassembly 6 5.2 Assembly 6 section 6 – Parts List 7 SECTION 7 – TECHNICAL DATA 8 appendix - Warranty, Useful Life, Notices 9 A.1 Limited Warranty 9 A.2 Useful Life Policy 9 A.3 Notices 9 Y1-03-0057 Rev.
SECTION 1 – DESCRIPTION The ACR/EM-2BA is a battery operated solid state megaphone specifically developed for use in enclosed areas such as in the interior of an aircraft or ship cabin. It has been designed to minimize regenerative acoustic feedback that results in whistling and other oscillations of this nature. It has a 90° sound projection angle to direct the sound to persons in its immediate vicinity, as well as in the rear sections of any aircraft.
section 3 – maintenance 3.1 Cleaning External surfaces of the megaphone may be cleaned with a soft cloth, dampened in a solution of mild household detergent. Do not immerse in water or use strong solvents. Clean electrical contacts with cloth dampened with isopropyl alcohol. 3.2 Battery Replacement The power supply used in the megaphone consists of six standard 1 ½ volt “AA” size batteries. Current drain is minimal (12 mA) with the megaphone “ON”, and increases when the user speaks into the microphone.
4.2 Repair The megaphone consists of three major sub-assemblies; the microphone and mouthpiece assembly, the megaphone sub-assembly, and the horn and speaker assembly. Repairs are restricted to the replacement of these defective sub-assemblies or the batteries and lanyard assemblies. SECTION 5 – DISASSEMBLY & Assembly 5.1 Disassembly Megaphone should be disassembled for repair or replacement of components only. 1. 2. 3. 4. 5. 6.
section 6 – Parts List 11 6 7 14 5 12 3 4 9 8 2 1 13 10 FIGURE 2 ACR/EM-2BA PORTABLE SAFETY MEGAPHONE ILLUSTRATED PARTS LIST Replaceable parts are illustrated in Figure 2 (shown above), and listed in the table (shown below). Part numbers shown in the “Part Number” column may be ordered from ACR unless another manufacturer’s name is given in parentheses in the “Description” column. In this case, replacement parts can be obtained directly from the original manufacturer.
SECTION 7 – TECHNICAL DATA Dimensions 5.5” max diameter bell, 11.5” max long Weight 2.3 lbs.
appendix - Warranty, Useful Life, Notices A.1 Limited Warranty This product is warranted against factory defects in material and workmanship for a period of 1 (one) year* from date of purchase or receipt as a gift. During the warranty period ACR Electronics, Inc. will repair or, at its option, replace the unit at no cost to you for labor, materials and return transportation from ACR. For further assistance, please contact our Technical Service Department at ACR Electronics, Inc.
