PS Magazine - TB 43-PS-740
PS, The Preventative Maintenance Monthly
ISSUE 740
JULY 2014
49
PS 740
JUL 14
PQDRs and Warranty Claims
± Before±you±submit±a±product±quality±deFciency±report±(PQDR)±or±warranty±claim,±carefully±
inspect±and±test±the±image±intensiFer±tube.±Make±sure±the±tube±has±an±actual±defect.
± Also± check± the± warranty± labels± to± make± sure± the± warranties± haven’t± expired.± There±
are±two±warranty±labels.±The±label±for±the±NVD±is±on±its±outside.±The±label±for±the±image±
intensiFer±tube±is±on±the±tube±itself.±You±have±to±remove±the±eyepiece±to±get±to±the±tube.
Laser damage:
± The± image±
shows±black±spots±and±lines±
caused±by±a±laser.
Black spots:
These± are± cosmetic± blemishes± in± the± tube.±
The± image± on± the± left± shows± an± internal± tube± blemish±
near± 3± o’clock.± It± was± caused± by± the± user± dropping± the±
NVD.±The±image±on±the±right±shows±a±faint±black±spot±at±5±
o’clock.±This±is±a±more±typical±kind±of±spot.±Black±spots±are±
acceptable±as±long±as±they±don’t±interfere±with±viewing±the±
image.±They’re±also±acceptable±if±they±pass±the±black±spot±
check±in±your±TM.
Sun exposure:
± The± left± side± of± the± image± shows± sun±
damage± to± the± NVD’s± image± intensiFer± tube± caused± by±
not±using±a±lens±cap.±The±right±side±of±the±image±shows±an±
undamaged±image±intensiFer±tube.±A±lens±cap±protected±
the±tube±when±the±NVD±was±not±in±use.
Emission point:
± This± is± a± steady±
or±fluctuating±pinpoint±of±bright±
light±in±the±image±area±that±does±
not± go± away± when± all± light± is±
blocked±from±the±objective±lens±
of±that±monocular.±The±position±
of± an± emission± point± does± not±
move±within±the±image±area.
Warranty
± Read±the±warranty±information±in±your±TMs±to±Fnd±out±what’s±
covered.±The±warranty±
does not
±cover±a±product±that’s±been±misused,±
neglected±or±damaged±in±an±accident.±It±also±doesn’t±cover±a±product±
that±hasn’t±been±installed±or±maintained±using±the±instructions±in±
the±TMs.±Contact±the±vendor±if±you±have±warranty±questions.
Unnecessary Fees
± The±vendor±may±charge±you±a±testing±fee±of±$100±or±more±per±image±intensiFer±tube±or±
$150±per±NVD±if±you±return±these±items±under±a±PQDR±or±warranty±claim±and±the±vendor±
Fnds±no±defects.±The±vendor±can±also±charge±you±if±you±return±these±items±and±the±vendor±
Fnds±proof±of±misuse±or±neglect.±Of±course,±if±the±vendor±Fnds±that±your±returned±item±has±
defects,±the±vendor±will±waive±the±testing±fee.
±
Dirty optics:
± The± oddly±
shaped±
marks±
scattered±
throughout±
the±
image±
are±
sometimes±
mistaken±
for± black± spots± and± lines.±
They’re±
actually±
bits±
of±
debris.± To± clear± up± the±
image,±clean±the±lenses,±the±
light±interference±Flter±(LI²)±
and± the± image± intensiFer±
tube’s±curved±output±Fber-
optic±faceplate.
If you have questions about NVDs or tube inspection and testing, contact
Program Executive Office (PEO) Soldier’s Greg Patrick at DSN 654-0139, (703) 704-
0139, or email:
gregory.s.patrick6.civ@mail.mil
the following
examples
may help you
understand
what you’re
seeing when you
look through
the eyepiece of
your nvd…
Damage±caused±by±laser
Black±spot±caused±
by±dropping±NVD
Typical±black±
spot
Undamaged±image±
intensiFes±tube.
Lens±cap±used
Sun-damaged±image±
intensiFer±tube.
No±lens±cap±used
The
Topic Is
Optics
Here are a few
simple guidelines
to follow when
servicing the
image intensifier
tube…
Don’t±mistake±bits±of±
debris±for±black±spots
Warranty±label±for±
NVD±is±on±outside
Label±for±image±intensiFer±
tube±is±on±tube
740 48-49.indd
1-2
5/22/14
3:39 PM
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