Bosch Telex Ascend Manual page 39

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My ANR (Active Noise Reduction) is no longer
working.
My headset does not work with my cell phone or
MP3 player.
I need parts for my headset.
Technical Support phone number
I want to repair my headset at home.
How long will it take my headset to be repaired?
Bosch Security Systems, Inc.
PROBLEM
Troubleshooting and FAQs
Repair duration is usually 7 to 10 working days plus
shipping time back to the customer.
Technical Manual
CHAPTER 7
SOLUTION
Verify the headset is plugged in.
Verify the ANR switch is in the on
position.
If using a battery, verify the battery is
charged.
If you have verified the previous
bullets, then send the unit in for
repair.
Verify the cord for the device is
plugged in firmly.
Contact technical support for the part
number you are looking for.
1.800.898.6723
We have custom developed test
equipment which is required to
qualify the product and is not
available outside of the factory.
Home repair may void TSO
requirements.
F.01U.196.221
Rev. 08

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