3M Peltor ComTac VI NIB MT20H682 N Serie Mode D'emploi page 16

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Repeat step 1.6 for the other guide, and remove the cup. At this stage the earcups should look like in figure 1.6-d.
(1.6-d)
1.7 Rotate the boom microphone earcup arm guide 90 degrees to make sure it detaches with relative ease, and remove the boom
microphone earcup arm guide as shown in figure 1.7-a and 1.7-b. NOTE: Make sure you rotate the boom microphone earcup arm
guide as shown in the figures, because of the earcup arm guide lock when it is positioned in place.
(1.7-a) (1.7-b)
Remove the existing boom microphone earcup arm guide on the helmet attachment by rotating it 90 degrees to make sure it
detaches with relative ease, and remove the boom microphone earcup arm guide from the helmet attachment as shown in figure
1.7-c and 1.7-d. NOTE: There is only one boom microphone earcup arm guide on the helmet attachment.
(1.7-c) (1.7-d)
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