Advanced Bionics CI-5851 Instructions De Fonctionnement page 12

After the click you will see the opening below is empty and
the new earwax protection sits in the speaker unit.
Connecting the M Acoustic Earhook
Remove the power source from the Naída CI M90 or
Sky CI M90 sound processor and remove the M T-Mic or
M Earhook if necessary.
Align the M Acoustic Earhook flush with the sound
processor. Hold the M Acoustic Earhook firmly at the top
10