ATN NVM14 Operator's Manual page 51

MAlFUNCTION
5 light visible
around eyecup
6 Diopter adjust-
ment cannot
be made
7 Battery adapt-
er difficult to
remove.
8 Head straps
cannot be
tightened
9 Headmount or
helmet mount
socket does
not catch.
10 Helmet mount
will not tighten
to helmet.
TEST OR INSpECTION
Check eye-relief distance.
Check eyecup for resiliency.
Check to see if the diopter ad-
justment ring is bent or broken
Check for damaged battery
adapter.
Check for defective buckles,
fasteners or straps.
Check socket for dirt.
Check socket for damage.
Inspect mounting hardware for
damage.
CORRECTIVE ACTION
re-adjust for proper
eye-relief distance.
If eyecup is defec-
tive, refer to higher
level of maintenance.
If damaged, refer
to higher level of
maintenance.
If damaged, refer
to higher level of
maintenance.
If damaged, refer
to higher level of
maintenance.
Clean socket.
If damaged, return
headmount or helmet
mount to higher level
of maintenance.
If damaged, refer
to higher level of
maintenance.
6-7