Luna Optics LN-PRS40M - Manual (Page 7)

ZEROING THE SCOPE :
Set the weapon with the scope on it on a solid base, or bipod.
Remove the horizontal and vertical adjustments covers. Flip up the
Lens Cover (9) (ONLY IN THE DARK!) and then turn the scope to ON
position
Set the reticle illumination to the comfortable level by rotating the
Reticle Switch (3). View the position of the reticle through the
rubber eyecup. If the reticle appears not in the center of the image,
move it to the center by adjusting (rotating) the scales of horizontal
and/or vertical adjustments (10). Once the reticle is in the center of
view, align the weapon with the target, so that the target is in the
middle of the cross section of the reticle. Make the control (zero)
shot. Observe the bullet impact on the target and, if necessary,
make corrections via horizontal and vertical adjustment scales. If
necessary, repeat the shots until you can see the correlation
between adjusting the scales and the bullet impact. Once finished,
replace the scale covers and close the lens cover. Do not forget to
switch the unit to the OFF position. IMPORTANT: It is possible to
zero the scope during daylight (as long as it is not a bright sunny
day) by keeping the Objective Lens Cover (9) on and sighting the
scope using the built-in daylight filter in the lens cover.
TROUBLESHOOTING:
1. Unit does not turn on:
a) please check if the batteries are inserted according to
the drawing
b) please make sure the batteries are fresh
2. You cannot see the image:
a) you may be turning the unit on in a dark area with the
lens cover still on the unit
b) You may need to turn on the infrared light
c) please make sure the batteries are fresh
3. Unable to obtain sharp and clear image:
a) you may need to repeat the process of rotating the
ocular focusing wheel (1) and distance focusing wheel
(2) several times until you get a good feel of it
b) You may be viewing an object that it too close – the
minimum focusing distance is approximately 5m or 15
feet
c) You may have dirty objective or ocular lens – you may
clean them with soft lens cleaning cloth
4. The unit is turned off, but the green glow is still on:
THIS IS NORMAL – THE GREEN GLOW WILL FADE OUT
WITHIN FEW MINUTES
5. There are black dots (specs) in the field of view:
THIS IS NORMAL – BLACK DOTS ARE MICROSCOPIC
PARTICLES INSIDE THE TUBE AND RESULT FROM THE