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MALFUNCTION
4. Light visible
around eyecup
5. Diopter ad-
justment can-
not be made
6. Inter pupil -
l a r y a d j u s t -
m e n t c a n n o t
be made (left &
right eye)
7. Battery cap
difficult to turn
8. PVS-7 does
n o t s h u t o f f
when removed
f r o m
h e a d
mount during
operation
TEST / INSPECTION
Check eye relief dis-
tance
Check eyecup for
resiliency
Check to see if the
diopter adjustment
ring is bent or bro-
ken
Defective eyepiece
assembly
Check for dirt or grit
in threads
Visually inspect for
the presence of an
o-ring
C h e c k f o r d a m -
aged battery cap or
threads on battery
compartment
Visual
CORRECTIVE ACTION
Readjust for proper eye
relief distance
If eyecups defective, re-
fer to higher level of main-
tenance
If damaged, refer to high-
er level of maintenance
Refer to higher level of
maintenance
Clean
If o-ring is missing: refer
to higher level of mainte-
nance
If damaged, refer to high-
er level of maintenance
Return both the PVS-7
and head mount to higher
level of maintenance
3-3
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