•
The Yukon IR Flashlight with mount (# 29072);
•
The Yukon Directional Microphone with NVRS adapter (# 27022).
STORAGE
Always keep the scope in its carrying case in a dry, well ventilated space. Storage temperature
should not be below +10°
С
(+50°F), and humidity no higher than 70%. Remove the batteries if
the scope will not be used for more than 1 month.
TROUBLESHOOTING
Listed below are some potential problems that may occur when using the SENTINEL. Carry
out the recommended checks and troubleshooting steps in the order listed. Please note that the
table does not list all of the possible problems. If the problem experienced with the scope is not
listed, or if the suggested action meant to correct it does not resolve the problem, please contact
the manufacturer.
Problem
Possible cause(s)
Corrective action
The batteries have
been installed incorrectly.
Reinstall the batteries
with the correct polarity
orientation.
The total battery charge
is less than 2.0 V.
Install fresh batteries.
The riflescope
does not turn on.
Oxidized contact points in the
battery compartment due to
“leaky” batteries or contact
points becoming exposed to
a chemically reactive solution.
Clean the battery compartment,
focusing on the contact points.
The red reticle is blurred
and can not be focused
with the eyepiece.
The eyepiece is not adjusted
correctly.
Adjust the eyepiece according
to the instructions in the
“OPERATING THE
SENTINEL” section.
With a crisp reticle image,
the image of the target
at least 30m away
is blurred.
The eyepiece is not adjusted
correctly.
Adjust the eyepiece according
to the instructions in the
“OPERATING THE
SENTINEL” section.
Dust and moisture are covering
the
outside optical surfaces.
Clean the lens surfaces with a
soft cotton tissue or cloth.
With a crisp reticle image,
the image of the target
at least 30m away
is blurred.
Condensation collects on the
inside of the objective and the
eyepiece lenses, or is on the
optical surfaces of the
electronic-
optical converter, and may be
caused by the scope fogging
due to a rapid change in
temperature; for example, when
the scope is brought from a
cold into a warm environment.
Let the unit dry by leaving it in
a warm environment for 4
hours.
Distinct black dots or
specks
The dots are cosmetic
blemishes resulting from IIT
No need to take corrective
action
