
Personal Ambulatory Oxygen System
Provider Technical Manual
20771733 D 38
Figure 72
Figure 73
28. Remove the four Phillips Head screws that are used to attach the
Voice System Board to the Front Cover.
Figure 74
29. Once the four screws are removed, the Voice System Board can
be removed by gently lifting upward on the Voice System Board.
30. To reinstall, or install a new Voice System Board, follow steps 27-
28 in reverse order.