Owner's guide
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... screen 24 Headband cushion 24 Replacing parts 24 Microphone windscreen replacement 24 Ear cushion replacement 25 Battery replacement 25 Headband cushion replacement 26 Microphone assembly or access cover replacement 26 TROUBLESHOOTING 27 ...In case of difficulty 27 INSTALLATION 31 Mounting the aircraft panel connector 31 Details on making the connections 33 TECHNICAL INFORMATION 34 SERVICE AND WARRANTY INFORMATION 36 Locating the headset serial number 36 Warranty period 36 Limited warranty service 36 To return your headset to Bose...
... screen 24 Headband cushion 24 Replacing parts 24 Microphone windscreen replacement 24 Ear cushion replacement 25 Battery replacement 25 Headband cushion replacement 26 Microphone assembly or access cover replacement 26 TROUBLESHOOTING 27 ...In case of difficulty 27 INSTALLATION 31 Mounting the aircraft panel connector 31 Details on making the connections 33 TECHNICAL INFORMATION 34 SERVICE AND WARRANTY INFORMATION 36 Locating the headset serial number 36 Warranty period 36 Limited warranty service 36 To return your headset to Bose...
Owner's guide
Page 27
...headset in liquid, do not use it. If cleaning or replacement of the earcups. If the headset is needed, follow the recommendations on each earcup are clean before each flight. Take special care when cleaning the ear cushions and the outside surfaces of the headband, connectors, plastic parts,...® headset opening and the microphone opening When wiping down the headset earcups, be sure not to ensure that may be performed by Bose or an authorized repair facility. Check to force any other care and maintenance, in the openings. With normal use tweezers, if necessary,...
...headset in liquid, do not use it. If cleaning or replacement of the earcups. If the headset is needed, follow the recommendations on each earcup are clean before each flight. Take special care when cleaning the ear cushions and the outside surfaces of the headband, connectors, plastic parts,...® headset opening and the microphone opening When wiping down the headset earcups, be sure not to ensure that may be performed by Bose or an authorized repair facility. Check to force any other care and maintenance, in the openings. With normal use tweezers, if necessary,...
Owner's guide
Page 28
... not attempt to air dry, then reattach. Do not use , parts like windscreens and ear cushions may require periodic replacement. Replacement parts can be damaged or worn out, contact Bose. Allow the cushion to remove, replace, repair, or clean this component. Replacing parts Through normal use electric heaters, blowers, or hairdryer-type devices to about /1 4 inch from...
... not attempt to air dry, then reattach. Do not use , parts like windscreens and ear cushions may require periodic replacement. Replacement parts can be damaged or worn out, contact Bose. Allow the cushion to remove, replace, repair, or clean this component. Replacing parts Through normal use electric heaters, blowers, or hairdryer-type devices to about /1 4 inch from...
Owner's guide
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... into the slot completely around the earcup. 6. Replacing the ear cushions 1. You may have to replace them more often, if you fly. Grasp the ear cushion skirt where it folds into the slot behind the ear cushion flange. Tuck an edge of the ear cushion skirt into the slot on the earcup. 2.... Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 HEADSET CARE AND MAINTENANCE Ear cushion replacement As a general rule, ear cushions should be replaced every six months or every 350 hours of use, depending on how often you : • Have a full beard or heavy whiskers. •...
... into the slot completely around the earcup. 6. Replacing the ear cushions 1. You may have to replace them more often, if you fly. Grasp the ear cushion skirt where it folds into the slot behind the ear cushion flange. Tuck an edge of the ear cushion skirt into the slot on the earcup. 2.... Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 HEADSET CARE AND MAINTENANCE Ear cushion replacement As a general rule, ear cushions should be replaced every six months or every 350 hours of use, depending on how often you : • Have a full beard or heavy whiskers. •...
Owner's guide
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... a protected surface, turn the headset upside down. While still holding the headband open, align the center of the new cushion with the center of comfort to your headset. Bose recommends that you replace the cushion after regular care and maintenance fails to restore the wool pile to its original size and shape. Tab 8, 16...
... a protected surface, turn the headset upside down. While still holding the headband open, align the center of the new cushion with the center of comfort to your headset. Bose recommends that you replace the cushion after regular care and maintenance fails to restore the wool pile to its original size and shape. Tab 8, 16...
Owner's guide
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For instructions on how to the connector or pins. Only the boom microphone cable, access cover, batteries, windscreen, headband cushion, and ear cushions are fresh and cor- See page 16 for a description of the power indicator. • If using aircraft power, check the aircraft fuse or... plugs are set too low. See "Volume control" on page 16 for instructions on page 23. If the problem persists, contact Bose using battery power, make sure the batteries are replaceable by the user. See "The microphone assembly" on . • Check the power indicator. CAUTION: Do not attempt to do...
For instructions on how to the connector or pins. Only the boom microphone cable, access cover, batteries, windscreen, headband cushion, and ear cushions are fresh and cor- See page 16 for a description of the power indicator. • If using aircraft power, check the aircraft fuse or... plugs are set too low. See "Volume control" on page 16 for instructions on page 23. If the problem persists, contact Bose using battery power, make sure the batteries are replaceable by the user. See "The microphone assembly" on . • Check the power indicator. CAUTION: Do not attempt to do...
Owner's guide
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... with no air gaps around your ears are not blocked. Squealing or whistling sound when the headset is turned on the outside of incoming communications. Replace any cushions that interfere with the seal. The headset's low-force design makes it sensitive to items that appear to be adjusted to an acceptable level... and the earcup. Make sure your ear. Refer to "The operation switches" on page 25. Refer to "Ear cushion replacement" on page 9. If dust or dirt is correct. If the stereo/mono switch is set too low. Audio Problem What to do Low volume of ...
... with no air gaps around your ears are not blocked. Squealing or whistling sound when the headset is turned on the outside of incoming communications. Replace any cushions that interfere with the seal. The headset's low-force design makes it sensitive to items that appear to be adjusted to an acceptable level... and the earcup. Make sure your ear. Refer to "The operation switches" on page 25. Refer to "Ear cushion replacement" on page 9. If dust or dirt is correct. If the stereo/mono switch is set too low. Audio Problem What to do Low volume of ...
Owner's guide
Page 33
...is correct. Do not blow out or vacuum debris. • Inspect the seal between the ear cushion skirt and the earcup. Replace any cushions that interfere with the seal around your ear. Replace any cushions that they are not blocked. Both ends of each earcup to ensure that appear to do No ...audio from auxiliary source. Make sure your ears are completely inside the ear cushions, and that a hat or eyeglasses with thick temples do ...
...is correct. Do not blow out or vacuum debris. • Inspect the seal between the ear cushion skirt and the earcup. Replace any cushions that interfere with the seal around your ear. Replace any cushions that they are not blocked. Both ends of each earcup to ensure that appear to do No ...audio from auxiliary source. Make sure your ears are completely inside the ear cushions, and that a hat or eyeglasses with thick temples do ...
Owner's guide
Page 40
... your country/region (visit Global.Bose.com for Bose contact information in the product carton. For more information on replacing the headband cushion, see Refer to the address provided by pressing down firmly. and 3. Cartons not bearing a return authorization number, where required, will be refused. 36 Warranty period Your Bose A20 Aviation Headset is identified by a unique...
... your country/region (visit Global.Bose.com for Bose contact information in the product carton. For more information on replacing the headband cushion, see Refer to the address provided by pressing down firmly. and 3. Cartons not bearing a return authorization number, where required, will be refused. 36 Warranty period Your Bose A20 Aviation Headset is identified by a unique...
Owner's guide
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... Earcup access cover • 6-pin connector to dual G/A plug cable adapter • Service kit (includes ear cushion kit, microphone windscreen, and headband cushion kit) • Aircraft panel connector installation kit • Aircraft panel installation kit cover plate 37 See the contact...aviationheadsetsupport@Bose.com In Europe: Noise Reduction Technology Group Nijverheidstraat 8 NL-1135 GE Edam TEL: +31(0)299-390777 FAX: +31(0)299-390109 E-MAIL: aviation_europe@Bose.com World Wide Web: www.Bose.com Ordering parts and accessories The following accessories and customer-replaceable parts...
... Earcup access cover • 6-pin connector to dual G/A plug cable adapter • Service kit (includes ear cushion kit, microphone windscreen, and headband cushion kit) • Aircraft panel connector installation kit • Aircraft panel installation kit cover plate 37 See the contact...aviationheadsetsupport@Bose.com In Europe: Noise Reduction Technology Group Nijverheidstraat 8 NL-1135 GE Edam TEL: +31(0)299-390777 FAX: +31(0)299-390109 E-MAIL: aviation_europe@Bose.com World Wide Web: www.Bose.com Ordering parts and accessories The following accessories and customer-replaceable parts...