Chauvin Arnoux CA 650 Notice De Fonctionnement page 62

Firstly, put the right ear FV-R on the right hand side of metal case, and slide it into the
case by pushing in direction as shown in Figures 2-4 through Figure 2-8. Ensure that
the ear is firmly plugged into case. Do the same with the left ear FV-L.
Figure 2 - 4
Figure 2 - 5
Figure 2 - 6
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