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8.3 Mains adapter maintenance
Before use check the mains AC adapter for signs of wear and/or
damage. If you find any, please replace it immediately by
contacting your local service department (see Annexx 5), requesting
part number: 106 75 033.
CAUTION!
Do not use any other mains adapter with this instrument.
See section 2.3.
8.4 Perform listening check
Important Note:
It is strongly recommended to check the proper function
and calibration of the signal levels on a regular base.
The listening check can be done by testing the own hearing abi-
lity and compare the results to a reference. In case deviations are
found, the instrument shall not be further used for patient testing
until a new calibration has been applied (see section 10)
It is recommended to perform this listening check at least on a
daily base or in case it is more rarely used, before performing
patient testing.
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