Instruction/ maintenance manual of the product A20 Bose
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A20 ® A VIATION H EADSET Owner’ s Guide ©2012 Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA AM325453 Rev .07 Covers.fm Page 1 Wedn es day, April 25, 201 2 10:38 AM.
i T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 S AFETY I NFORMATION NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
ii T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 C ONTENTS A DVISORIES 1 Operational adv isory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Hearing safet y . . . . . . . . .
iii T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 C ONTENTS H EADSET C ARE AND M AINTENANCE 23 Instructions fo r continue d airworthin ess . . . . . . . . . . . . . . . . . . . . . . . . . 23 Cleaning the headset .
1 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 A DVISORIES Operational advisory The Bose ® A20 ® Aviation Headset incorporat es Acoustic Noise Cancelling ® technology . As with any co mplex electronic device, it is possible for this headset to fa il during operat ion.
2 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 A DVISORIES Hearing safety The headset is in tended for use with the Acoustic Noise Cancelling ® mode turned on . Noise reduction and communications performanc e are r educed with Acoustic Noise Cancelling mode turned off.
3 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 A DVISORIE S Headset earcup r equir ements Proper headset operation requires that the headset T riPort ® openings on the earcup are kept fr ee of debris. Th e headset T riPort openings are located on the outside of each earcup and include two holes and a screen.
4 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 I NTRODUCTION Congratulat ions on your purchase of a Bose ® A20 ® Aviation Headset.
5 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 I NTRODUCTI ON What’ s in the carton Note: Cable connector types will var y based on model of headset. See “Power and cable variations” on page 7 . Note: *Replace ba tteries with a lkaline batterie s only .
6 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 I NTRODUCTION Control module variations If you opted for Blueto oth ® wireless technology , you received the control module featuring Bluetoot h technology . If not, you received th e conventio nal control module.
7 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 I NTRODUCTI ON Power and cable variations The Bose ® A20 ® Aviation Headset is available fo r pur chase in diff.
8 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 P REPARING THE H EADSET FOR U SE The micr ophone assembly Y our headset may be shipped with the microphone assembly (boom microphone and cable) attached to the left earcup.
9 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 P REPARING THE H EADSET FOR U SE The battery compartment The Bose ® A20 ® Aviation Headset is shippe d with facto ry-set operat ion defaults .
10 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 P REPARING THE H EADSET FOR U SE 3. T o change a swit ch position, use a pen or a small, flat -tipped screwdriver to gently move the switch. This table shows possible positions, defa ult setting, and purpose for each switch.
11 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 P REPARING THE H EADSET FOR U SE Connecting the headset to the air c raft The Bose ® A20 ® Aviation Headset can be configured to either plug into air craft power or rely entir ely on battery power .
12 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 P REPARING THE H EADSET FOR U SE Using the dual general aviation plugs The most co mmon battery powered (only) ver sion of the h eadset has two general aviat ion (G/A) p lugs that co nnect to t he aircraft audio.
13 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 U SING THE H EADSET W earing and adjusting the headset Prope r fit on your head is important bot h for comfort and optimal noise red uction performance.
14 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 U SING THE H EADSET 1. Grasp the boom with your fingers an d move the microphone up or down so it is level with your mouth. 2. Pull the microphone in toward your lips.
15 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 U SING THE H EADS ET Using the contr ol module Use the contr ol module to contr ol the headset functions. Ther e ar e two variations of th e module; one featurin g Bluetooth ® wireless technology a n d one that has basic functions only .
16 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 U SING THE H EADSET • Double-click the power button to dim the po wer and Bluetooth ® wireless technology indic ators. T o togg le the indicators between dim and brigh t, rapidly pr ess the power button twice.
17 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 U SING THE H EADS ET Auxiliary (AUX) audio input The Bose ® A20 ® Aviation Headset provides a 1 / 8 inch (3.5 mm) AUX audio input that allows yo u to use yo ur headset with an exte rnal audio source such as a portable GP S or a portable audio de vice.
18 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 U SING THE H EADSET Multifunction/Audio priority switch The multifunction/audi o priority switch has th ree po.
19 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 U SING THE H EADS ET Using the headset with a Bluetooth ® -enabled phone Pairing the headset with your phone Pa.
20 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 U SING THE H EADSET Note: The Bose A20 ® Aviation Headset will automati cally exit pairing mode after five minutes of inactivity . Bluetooth ® indicator light status The Blue tooth indicator is a blue light on the co ntr ol module .
21 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 U SING THE H EADS ET If you tur n the he adset control module off, the cont rol module Bluetooth wireless te chnology receiver also tu rns off, ending the conne ction to the Bluetooth technology-enabled phone.
22 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 U SING THE H EADSET Making and answering calls T o make a c all Dial from your mobile ph one, and the call will automa tically transfer to the headset.
23 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 H EADSET C ARE AND M AINTENANCE Instructions for continued airworthiness Bose r ecommends following the ge neral ca r e and maintenanc e instructions in this guide.
24 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 H EADSET C ARE AND M AINTENANCE Micr ophone windscr een Remove the windscr een from the micr ophone as described in “Microp hone windscr een r eplacement,” below .
25 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 H EADSET C ARE AND M AINTENANCE Ear cushion replacement As a general rule, ear cushions sh ould be replaced every six months o r every 350 hours of use, depen ding on how often you fly .
26 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 H EADSET C ARE AND M AINTENANCE Headband cushion r eplacement The headband cu shion is designed t o give the maximu m level of comfor t to your headset.
27 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 T ROUBLESHOOTING In case of dif ficulty Look for the pr oblem in the left column of the table, th en follow the “What to do” instructions in the right column.
28 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 T ROUBLESHOOTING Audio Problem What to do Low volume of incoming communications. • Check to see if the volume controls ar e set too low . Refer to “V olume contr ol” on page 16 for instructions on volume adjustment.
29 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 T ROUBLESHOOTING Auxiliary audio input Problem What to do Low rumbling sound with the headset tur ned on in a quiet environment. • Adjust the earcup fit to cr eate a better seal on your head.
30 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 T ROUBLESHOOTING Bluetooth ® wireless technology Auto off Problem What to do Cannot hear communications while listening to audio from AUX input or AUX input does not mute with incoming communications.
31 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 I NSTALLATION Mounting the air craft panel connector The airc raft panel connector is part of the optio nal 6-pin wiring harness assembly . Visit Bose.com or G lobal.
32 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 I NSTALLATION CAUTION: Do not use excessive force or be nd the instal led connec tor . T his may damage or break interna l solder joints. Note: The aircraft panel connector cannot be installed in an audio system using transformer -co upled audio outputs.
33 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 I NSTALLATION Helicopter (U174) connection diagram Note: Barrel grou nd (gnd) ref ers to aircraft grounds.
34 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 T ECHNICAL I NFORMATION Headphone Damage could occur to avionics equipment that is intended for use only with 600 Ohm heads ets. If in doubt, consult the avionics equipment manufacturer .
35 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 T ECHNICAL I NFORMATION F AA T echnical Standards Or der The Bose ® A20 ® Aviation Headset, its interface, cables, and microphones are F AA a pproved to TSO C139.
36 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 S ERVICE AND W ARRANTY I NFORMATION Locating the headset serial number Yo u r B o s e ® A20 ® Aviation Headset is identified by a unique headset serial number located on the underside o f the headband and underneath the headband cushio n.
37 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 S ERVICE AND W ARRANTY I NFORMATION Contact information Contact Bose for: • Spare parts and accesso ries • T.
38 T ab 3, 11 T ab 8, 16 T ab 7, 15 T ab 6, 14 T ab 5, 13 T ab 4, 12 English Ta b 2 , 1 0 S ERVICE AND W ARRANTY I NFORMATION 00_Cavu.book Page 38 Wednesd ay, April 25, 2012 10:10 AM.
39 T ab 6, 14 English T ab 2, 10 T ab 3, 11 T ab 4, 12 T ab 5, 13 T ab 8, 16 T ab 7, 15 The Bluetooth ® word mark and logos ar e registered tr ademarks owned by Bluetooth SIG, Inc., and any such use by Bose Corporation is under license. All o ther marks are property of Bose Corporation.
A20 ® A VIATION H EADSET Owner’ s Guide ©2012 Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA AM325453 Rev .07 Covers.fm Page 1 Wedn es day, April 25, 201 2 10:38 AM.
An important point after buying a device Bose A20 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bose A20 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bose A20 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bose A20 you will learn all the available features of the product, as well as information on its operation. The information that you get Bose A20 will certainly help you make a decision on the purchase.
If you already are a holder of Bose A20, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bose A20.
However, one of the most important roles played by the user manual is to help in solving problems with Bose A20. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bose A20 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
