Bose A20 Guia Del Usuario página 32

Troubleshooting
Problem What to do
Squealing or • Make sure the headset orientation is correct. Use the Left (L)
whistling sound
when the headset
is turned on
• Inspect the seal between the ear cushion skirt and the earcup.
• Adjust the earcup fit to create a better seal on your head. The
• If the squealing or whistling sound persists, turn off the power
Low rumbling • Adjust the earcup fit to create a better seal on your head. The
sound with the
headset turned
on in a quiet
environment
• Check ports at the outside surface of each earcup to ensure that
• Inspect the seal between the ear cushion skirt and the earcup.
Crackling sound • Make sure the headset orientation is correct. Use the Left (L)
audible with
headset turned
on in a loud
• Adjust the earcup fit. Refer to "Wearing and adjusting the headset"
environment, or
Acoustic Noise
• If your headset is battery-powered, check to see if the battery is
Cancelling noise
®
reduction is
• If your headset is aircraft powered, make sure the voltage
intermittent
• Inspect the seal between the ear cushion skirt and the earcup.
Warning: If the headset emits any loud noise and related loss of communications
while in the Acoustic Noise Cancelling mode, turn off the power switch.
The headset will continue to provide communications in the passive
noise reducing mode.
32 - English
and Right (R) markings above the earcups to orient the headset
correctly.
The skirt should fit into the slot on the earcup with no gaps.
Replace any cushions that appear to be worn out.
headset's low-force design makes it sensitive to items that
interfere with the seal around your ear. Make sure your ears are
completely inside the ear cushions, and that a hat or eyeglasses
with thick temples do not interfere with the seal.
switch and contact Bose for service as soon as possible.
low-force design of the headset makes it sensitive to items that
interfere with the seal around your ear. Make sure your ears are
completely inside the ear cushions, and that a hat or eyeglasses
with thick temples do not interfere with the seal.
they are not blocked. If dust or dirt is present, carefully remove the
debris using tweezers. Do not blow out or vacuum debris.
The skirt should fit into the slot on the earcup with no gaps.
Replace any cushions that appear to be worn out.
and Right (R) markings above the earcups to orient the headset
correctly.
on page 15.
low (indicated by fast blinking red LED).
powering the headset is no less than 10 VDC.
The skirt should fit into the slot on the earcup with no gaps.
Replace any cushions that have surface tears, torn stitching joints,
large wrinkles, or have become dried and stiff.